Drilling Performance Review Final

Drilling Performance Review Offshore Newfoundland and Labrador

Prepared for: Nalcor Energy – Oil and Gas Prepared by: NSB Energy Consulting August 2016

Drilling Performance Review – Offshore Newfoundland and Labrador

Disclaimer This report is intended solely for the use of Nalcor Energy – Oil and Gas. Any use which a third party makes of the report, or any information contained therein, or any reliance on or decisions to be made based on it, are the responsibility of such third parties. Decisions made or actions taken as a result of information in this report shall be the responsibility of the parties directly involved in the decisions or actions. NSB Energy Consulting Inc., along with any of its employees, consultants and associated authors of this report, make no warranty of any kind or character as to the reliability or suitability of this report or the data within for any purpose. The views expressed in this report are based on the best estimates of NSB Energy Consulting Inc. and its employees at the time of publication. Use of these opinions, material and data for any purpose is solely at the risk of the user and should not be used for any purpose other than for general information and awareness purposes. NSB Energy Consulting Inc. will not be held liable for any damages that parties may incur as a result of reliance on or use of information this report. With regards to the study of rig capabilities and rig availability, this was a primary research study conducted by NSB Energy Consulting Inc. with the sole intention of establishing the approximate availability and capability of rigs based on data published online by 26 arbitrarily chosen rig owners in April 2016.

Copyright © Copyright (2016), NSB Energy Consulting Inc., Nalcor Energy – Oil and Gas and their affiliated and subsidiary companies, all rights reserved. All trademarks belong to the respective companies and their affiliated and subsidiary companies, all rights reserved.

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Acknowledgements This report was undertaken and written by Michael Critch and Jenna Murphy from NSB Energy Consulting and underwent technical management, review and guidance by Doug Hunt, independent consultant contracted to NSB Energy Consulting Incorporated. Special thanks to the Nalcor Energy – Oil and Gas Exploration team including James Carter, David Norris and Mike White for their input and review.

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Executive Summary Offshore Newfoundland and Labrador offers a vast and diverse region for hydrocarbon exploration. This report provides a summary of well data and drilling metrics obtained for 112 of the 167 exploration wells that have been drilled offshore Newfoundland and Labrador since 1966. The report has been commissioned by Nalcor Energy - Oil and Gas to ensure that exploration and production companies have access to the information they need in order to best understand the operations completed in Newfoundland and Labrador’s offshore region. The aim of this study is to compile publically available drilling data in a comprehensive and comparable format to allow new and existing companies an opportunity to view the multitude of data available more efficiently. This report is not an offset study and should only be used in conjunction with individual company research. Of the 112 wells reviewed, 26 were drilled in the Labrador area, 25 in the Eastern Newfoundland area, 26 in the Jeanne d’Arc area and 35 in the South Newfoundland area. Of the wells available for analysis for this study, the first was drilled in 1966, with the last drilled in 2013. Individual well summaries are provided along with area comparisons herein (Appendices A-D) which provide insight into drilling performance in offshore Newfoundland and Labrador. Explorationists can examine the water depths, total drilling depths, rate of penetration while drilling and types of drilling fluids used to drill the wells. The report provides the breakdown of time summaries for each well between productive and nonproductive time which includes the effect of weather and ice on each well. The remaining 55 wells were omitted from the review due to the following reasons: - Wells that were abandoned at the surface/conductor stage were considered incomplete for purposes of the study - Wells in the Western Newfoundland region were excluded completely as most of these wells were drilled from land to offshore - The study was limited to a twenty-six well sample of the fifty-seven Jeanne d’Arc region wells - The end of well reports for recent wells drilled since 2013 are not yet released due to a confidentiality period. Finally, the report provides a review of the drilling rigs that have been used to drill wells in offshore Newfoundland and Labrador. The review includes research on the number of rigs currently available in the market as of April 2016 and an analysis of how the different types of drilling rigs could perform in offshore Newfoundland and Labrador. The types of rigs were also evaluated based on their performance in the wells reviewed. The report outlines the necessary factors to be considered when choosing the appropriate drilling rig to conduct operations in Newfoundland and Labrador’s offshore region. This report and all of the data compiled will be available via both Nalcor’s exploration website (studies section) and on Nalcor’s Exploration Strategy System (NESS) online database and will provide exploration teams with a database of all relevant well information that could help them understand Newfoundland and Labrador’s offshore region.

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Table of Contents 1.0

Introduction ................................................................................................................................. 8

1.1

Background .............................................................................................................................. 8

1.2

Scope of the Study ................................................................................................................... 8

1.2.1

Data ............................................................................................................................... 11

1.2.2

Assumptions................................................................................................................... 12

1.2.3

Limitations ..................................................................................................................... 12

1.3 2.0

NESS Software System............................................................................................................ 13 Drilling Performance Overview .................................................................................................. 14

2.1

Introduction ........................................................................................................................... 14

2.2

Wells by Decade..................................................................................................................... 15

2.3

Wells by Basin ........................................................................................................................ 16

2.4

Operating Companies............................................................................................................. 17

2.5

Drilling Rig Use ....................................................................................................................... 18

2.6

Total Depth of All Wells .......................................................................................................... 19

2.7

Total Time on Wells................................................................................................................ 20

2.8

Time Distribution ................................................................................................................... 21

2.9

Geological Era ........................................................................................................................ 23

2.10

Drilling Mud ........................................................................................................................... 25

2.11

Rate of Penetration ................................................................................................................ 25

3.0

Drilling Performance – Area Analysis .......................................................................................... 28

3.1

Labrador Area Analysis ........................................................................................................... 29

3.1.1

Overview of Wells Reviewed in the Labrador Area .......................................................... 30

3.1.2

Drilling Rigs Used Offshore Labrador............................................................................... 32

3.1.3

Time Breakdown for Wells Offshore Labrador ................................................................ 33

3.1.4

Drilling Time Offshore Labrador ...................................................................................... 37

3.1.5

Rate of Penetration during Drilling Time ......................................................................... 38

3.1.6

Non-Productive Time Experienced Offshore Labrador .................................................... 39

3.1.7

Wait on Ice Delays Offshore Labrador ............................................................................. 41

3.1.8

Effects of Wait on Weather Offshore Labrador ............................................................... 41

3.1.9

Drilling Fluids Used in Labrador ...................................................................................... 42

3.1.10

Status of the Labrador Wells .......................................................................................... 42 5


3.1.11 3.2

Labrador Summary ........................................................................................................ 43

Eastern Newfoundland Area Analysis ..................................................................................... 44

3.2.1

Overview of Wells Reviewed in the Eastern Newfoundland Area .................................... 45

3.2.2

Drilling Rigs Used Offshore Eastern Newfoundland ......................................................... 47

3.2.3

Time Breakdown for Wells Offshore Eastern Newfoundland ........................................... 48

3.2.4

Drilling Time Offshore Eastern Newfoundland ................................................................ 51

3.2.5


3.2.6

Non-Productive Time Experienced Offshore Eastern Newfoundland ............................... 53

3.2.7

Wait on Ice Delays Offshore Eastern Newfoundland ....................................................... 54

3.2.8

Effects of Wait on Weather Offshore Eastern Newfoundland.......................................... 54

3.2.9

Drilling Fluids Used in Eastern Newfoundland Wells ....................................................... 55

3.2.10

Status of the Eastern Newfoundland Wells .................................................................... 56

3.2.11

Eastern Newfoundland Summary................................................................................... 56

3.3

Jeanne d’Arc Area Analysis ..................................................................................................... 57

3.3.1

Overview of Wells Reviewed in Jeanne d’Arc Area .......................................................... 58

3.3.2

Drilling Rigs Used in the Jeanne d’Arc Area ..................................................................... 60

3.3.3

Time Breakdown for Wells in the Jeanne d’Arc Area ....................................................... 60

3.3.4

Drilling Time in the Jeanne d’Arc Area ............................................................................ 64

3.3.5


3.3.6

Non-Productive Time Experienced in the Jeanne d’Arc Area ........................................... 66

3.3.7

Wait on Ice Delays in the Jeanne d’Arc Area ................................................................... 68

3.3.8

Effects of Wait on Weather in the Jeanne d’Arc Area ...................................................... 69

3.3.9

Drilling Fluids Used in the Jeanne d’Arc Area .................................................................. 69

3.3.10

Status of the Jeanne d’Arc Wells .................................................................................... 70

3.3.11

Jeanne d’Arc Summary .................................................................................................. 70

3.4

South Newfoundland – Area Analysis ..................................................................................... 71

3.4.1

Overview of Wells Reviewed in South Newfoundland Area ............................................. 72

3.4.2

Drilling Rigs Used Offshore South Newfoundland............................................................ 74

3.4.3

Time Breakdown for Wells Offshore South Newfoundland ............................................. 75

3.4.4

Drilling Time Offshore South Newfoundland ................................................................... 79

3.4.5


3.4.6

Non-Productive Time Experienced Offshore South Newfoundland.................................. 81 6


3.4.7

Wait on Ice Delays Offshore South Newfoundland .......................................................... 82

3.4.8

Effects of Wait on Weather Offshore South Newfoundland ............................................ 83

3.4.9

Drilling Fluids Used in South Newfoundland Wells .......................................................... 84

3.4.10

Status of the South Newfoundland Wells ....................................................................... 84

3.4.11

South Newfoundland Summary ..................................................................................... 84

4.0

Rig Availability and Performance ................................................................................................ 86

4.1

Global Rig Use and Availability ............................................................................................... 86

4.2

Rig Use – Offshore Newfoundland and Labrador .................................................................... 91

4.3

Rig Performance Overview – Offshore Newfoundland and Labrador...................................... 95

4.4

Rig Intake Requirements ........................................................................................................ 95

5.0

References ................................................................................................................................. 98

Appendix A: Individual Well Summary Reports – Labrador Area.......................................................... 103 Appendix B: Individual Well Summary Reports – Eastern Newfoundland Area .................................... 208 Appendix C: Individual Well Summary Reports – Jeanne d’Arc Area .................................................... 306 Appendix D: Individual Well Summary Reports – South Newfoundland Area....................................... 407

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1.0 Introduction 1.1 Background For 50 years, companies have been drilling offshore Newfoundland and Labrador (NL) to explore for oil and gas. There has been great success and many discoveries but the pace of exploration has been relatively slow as compared to many other comparable offshore jurisdictions such as the Gulf of Mexico, the North Sea and offshore Brazil. Over the 50 years since the first exploration well was spudded in Newfoundland and Labrador waters, only 167 exploration wells have been drilled compared to other jurisdictions where well density is much higher. Although there are many obstacles and challenges to drilling offshore Newfoundland and Labrador such as weather, rough sea conditions during storm events, ice and icebergs, there are some misperceptions about the operability offshore NL. In order to ensure that explorationists understand the operational environment of Newfoundland and Labrador’s offshore efficient access to the historical drilling performance data is crucial. One or two wells cannot define our vast offshore region and explorers need to be able to see the big picture. This review aims to compile, assess at a high level and distribute openly, the information that is crucial so that exploration teams have the ability to review the historical drilling performance of exploration wells drilled offshore Newfoundland and Labrador.

1.2 Scope of the Study The drilling performance review completed by NSB Energy Consulting was commissioned by Nalcor Energy – Oil and Gas Incorporated to summarize the exploratory drilling operations and performance in offshore Newfoundland and Labrador. The purpose of the review was to analyze a comprehensive number of the end of well and drilling reports for exploration wells drilled in offshore Newfoundland and Labrador between 1966 and 2013 and then prepare individual well summaries as well as comparable area analyses of well performance. This information will then be provided to exploration companies, operators and/or interested parties via the Nalcor Exploration Strategy System database, also known as NESS, so that they may easily gain an understanding of how drilling has been performed and developed in offshore Newfoundland and Labrador since 1966. The objectives of the review included: 1 – Individual summaries for 112 exploration wells in offshore Newfoundland and Labrador 2 – Examination and comparison of the performance of each well as part of four area groupings 3 – Analysis of the drilling rigs used, the availability of rigs today and the criteria for rigs being selected for future work. Of the 167 exploration wells, 55 were excluded from the study. Wells that were abandoned at the surface/conductor stage as well as all wells in the Western Newfoundland region were excluded. Only a 8


subset of the Jeanne d’Arc region wells were included and the end of well reports for recent wells drilling since 2013 are not yet released off confidentiality period. Individual well summaries were completed by analyzing the well time and drilling data from the end of well reports for the offshore Newfoundland and Labrador wells. The reports were analyzed and summarized individually. Each report was grouped based on their area/region and compared against other wells in the area. The four areas for comparison are: · · · ·

Labrador – Wells drilled in the Labrador North, Labrador South as well as North Eastern Newfoundland region Eastern Newfoundland - Wells drilled in the Flemish Pass and Orphan basins but not including the Jeanne d’Arc basin Jeanne d’Arc – Wells drilled in the Jeanne d’Arc basin South Newfoundland – Wells drilled in the Southern and South Eastern Newfoundland regions

Figure 1-1: Offshore Newfoundland and Labrador Areas and Wells compiled (black circles) in this study

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Each well has been evaluated and the individual well summaries provide an overview of each well based on the following criteria: 1 – Brief Well Overview: · Name · Location · Operator · Date of well · Drilling rig information · Water depth · Total depth · Number of meters drilled · Mud weight and type 2 – Time Breakdown of the Well – the time distribution logs and planners for each well were reviewed and grouped into the following five categories: •

•

•

• •

Drilling Time: Calculated based on the bit record provided in the end of well report. This includes sidetrack holes and coring time that was specified on the bit record. If coring time is not included in the drilling time on the bit record, it is included with other rig operation time. Pilot holes and failed holes are not considered in the calculation of the total drilling time. Time spent re-drilling, reaming or widening the hole is also not considered in drill time. Circulation and wiper trip time has been excluded from drilling time where possible Non-Productive Time (NPT): Calculated and categorized based on the time spent on activities that were a result of unplanned events during operations. This includes but is not limited to equipment failures and repairs, fishing operations, hole stability issues, waiting on ice and waiting on orders Wait on Weather (WOW): Calculated based on the time of delay caused by harsh weather or sea states. Wait on weather time is usually included as non-productive time, but has been purposely separated for this report Data Acquisition: Calculated based on any time spent logging or testing the well. This includes time spent rigging up for and conducting drill stem/production tests Other Rig Operations: Calculated based on the time spent on all other required tasks in order to complete drilling operations. This includes running riser, running and testing blowout preventers (BOPs), installing casing and downhole hardware, cementing, circulating and tripping time and all other tasks that are planned activities as part of the well operation that are not categorized above

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3 – Performance Metrics – the following metrics were calculated to assess the performance of the well: • • • • •

Meters per day (m) Meters per day excluding data acquisition time (m) Days per 1000 meters Percentage of non-productive time and wait on weather time Average rate of penetration (ROP), based on meters per hour, while drilling and in each geological period that was drilled

For each well summary a time breakdown pie chart is provided and, where available, the days versus depth plot was re-created. From the compiled data, it was possible to analyze and compare performance by decade or any time period medium, drilling season such as summer versus winter, geographical area or basin, type of drilling mud used or ranking of area well performance to other geographical drilling areas in other jurisdictions. A comparison was completed for each of the four areas to summarize the overall performance for each area. In addition, global rig data was collected from Baker Hughes and as published by offshore rig fleet operators online as of April 2016 (Baker Hughes Incorporated, 2016). This data was used to analyze offshore rig statistics such as capability in deepwater, rig type, rig generation as well as rig availability. This data along with the data collected in end of well reports on the rigs used in offshore Newfoundland and Labrador can prove to be a useful tool for high level well planning but it is not meant to be utilized as an offset study to drilling a well in Newfoundland and Labrador’s offshore.

1.2.1 Data The data sets for the wells were provided by Nalcor Energy Oil and Gas in the form of publically available end of well and drilling reports. Any data that is missing is labeled as not available or not reported. This means that the data was not found in the information provided for the review but does not mean that the data does not exist. In some cases, the end of well reports or drilling reports are inconsistent in providing all data necessary to complete a full summary. Therefore, assumptions were made and if specific to a particular well, these assumptions are included in the individual well summary reports. As well, a number of general assumptions were made for all data sets and are summarized in Section 1.2.2. It is important to note that the exploration wells reviewed are dated only until 2013. There have been 12 exploration wells drilled since this time but the data sets were not available at the time of the study.

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1.2.2 Assumptions With regards to drilling time and rate of penetration, the bit records for each well were used to calculate these numbers. At times, the bit records included reaming, re-drilling and hole widening time but these were not included in the total drilling time or used for rate of penetration calculations. Any failed holes or failed spud attempts are considered non-productive time but sidetracks and coring activities are included as drilling time. Additionally, many wells were drilled over a number of seasons and re-entered multiple times. In these cases, the well is still considered as one operation and upon re-entry, drill time continues once the total depth from the previous period has been reached. For the purpose of this report, all time associated with drill stem testing or production testing is considered data acquisition time. The meters per day are calculated based on the total number of meters divided by the total days on the well. The rate of penetration is calculated during drilling time and is the number of meters drilled divided by the hours spent drilling those meters. The end of well reports recorded the drilling mud weight used in either kilogram per cubic meter, specific gravity, or pounds per gallon (US). In this report, all mud weights were converted and are reported in kilograms per cubic meter (kg/m3).

1.2.3 Limitations The wells reviewed were drilled across a 47 year period starting in 1966 until 2013. Reporting methods varied depending on the date of the well and the operating company. In cases, lack of reporting meant the report could have been missing a time distribution chart, bit record or a stratigraphic column. In these cases, the missing items are left out or noted on the individual well summaries. With regards to the end of well report time breakdowns specifically, reporting methods for nonproductive time varied for each well and in some cases it was not clear how the non-productive time should be categorized. For example, in one well, the end of well report stated that there were issues with the dynamic positioning system but there was no time attributed to this in the time breakdown of the well. There was a general repairs classification in the time breakdown so the dynamic positioning issue is likely included in this but because there is no specification, all of the repair time was classified as rig and equipment repairs in the summary for this well. All geology information was compiled based on interpretation of the stratigraphic column provided in the end of well reports. With new data and insights through time, it is possible that this information could be interpreted differently.

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1.3 NESS Software System It is intended that the formal report herein, the individual well summary reports and the overall data will be accessible publicly through the Nalcor NESS (Nalcor Exploration Strategy System) database found online at http://www.nalcorenergy.com/oilgas/ness.asp.

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2.0 Drilling Performance Overview 2.1 Introduction Newfoundland and Labrador is the most easterly province in Canada with its coast adjacent to the western North Atlantic Ocean, providing a vast region for offshore drilling activity. The area is composed of 17 Mesozoic/Cenozoic sedimentary basins as displayed in Figure 2-1.

Figure 2-1: Offshore Newfoundland and Labrador Regions and Basins

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Drilling operations in offshore Newfoundland and Labrador began in 1966 and in total, there have been 427 wells drilled since that time. This includes 167 exploration wells, 55 delineation wells and 205 development wells for production and injection. As stated above, the focus of this study is 112 of the 167 exploration wells in the North Atlantic Ocean offshore Newfoundland and Labrador. The 10 exploration wells drilled in Western Newfoundland near or on the Port au Port Peninsula in the Anticosti basin, as documented by the C-NLOPB, were not evaluated as part of this report as 9 of these 10 wells were drilled from land to offshore.

2.2 Wells by Decade The 112 exploration wells studied included 35 wells drilled in the South Newfoundland area, 26 wells in the Labrador area, 26 wells in the Jeanne d’Arc area and 25 wells in the Eastern Newfoundland area. As stated above, drilling activities began in 1966 and Figure 2-2 provides a timeline of the exploration wells reviewed by decade both based on the number of wells reviewed for this study and the actual number that have been drilled in total. As displayed, the majority of the wells reviewed were drilled during the 1970’s and 1980’s. In fact, these two decades counted for 81 percent of the data reviewed. An influential reason for the increased drilling activity in the early 1980’s was the introduction of federal subsidies under Canada’s National Energy Plan to secure more national reserves between 1981 and 1986. In 1986 with the onset of lower oil prices and over supply, jurisdictional negotiations and the end of the incentive program, activity slowed. Since the 2000’s, exploration activity has been steadily increasing.

NUMBER OF WELLS BY DECADE 70 60 50 40 30 20 10 0 1960s

1970s

1980s

Exploration Wells Included in Study

1990s

2000s

2010s

Actual Number of Exploration Wells

Figure 2-2: Wells by Decade

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2.3 Wells by Basin Figure 2-3 provides the number of exploration wells drilled per basin. Of the 17 Mesozoic/Cenozoic basins classified in offshore Newfoundland and Labrador, 11 have seen exploratory drilling activity over the course of the past 50 years. The most operations have been located in the Jeanne d’Arc basin which is reflective of the fact that this is currently the only producing basin as of 2016. As well, activity in the Flemish Pass basin has increased especially in recent years as the trend to deepwater drilling and new discoveries in that area has spawned greater interest. All Flemish Pass wells were not included in the study because the reports for the recent wells since 2013 have not been made public. As well, since the Jeanne d’Arc region is a mature basin with many wells, only a representative subset was chosen. NUMBER OF WELLS PER BASIN 60 50 40 30 20 10 0 Jeanne d’Arc

Flemish Pass

Orphan

Carson

Horseshoe Laurentian

Number Studied

South Whale

Whale

Hopedale

Saglek

Total Wells

Figure 2-3: Wells by Basin

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2.4 Operating Companies Based on the wells reviewed, 22 operating companies have participated in drilling activities in offshore Newfoundland and Labrador since 1966. While some companies were operators for just one well, others like Amoco Canada Petroleum operated as many as 29 wells (Figure 2-4). Amoco Canada Petroleum mainly focused their operations in South Newfoundland with 26 of their 29 wells conducted in this area. Operators such as Amoco Canada Petroleum, Mobil Oil Canada and the Eastcan and Total Eastcan Exploration companies were the active operators in the 1970’s and 1980’s but currently the most active explorers are companies such as Statoil Canada Limited and Husky Oil Operations Limited. Operating Company Amoco Canada Petroleum BP Exploration Canada Limited BP Resources Canada Limited Canterra Energy Chevron Canada Limited Chevron Standard Limited ConocoPhillips Canada Eastcan Exploration Limited Elf Oil Exploration Esso Resources Canada Limited Husky Oil Operations Limited Mobil Oil Canada Limited Northcor Energy Pan American Petroleum Petro Canada Incorporated Statoil Canada Limited StatoilHydro Canada Limited Tenneco Oil and Minerals Limited Texaco Canada Enterprises Limited Texaco Canada Resources Limited Total Eastcan Exploration Limited Figure 2-4: Number of Wells Drilled per Operator

Number of Wells 29 3 1 2 4 3 1 6 2 3 9 15 1 2 15 5 1 1 1 1 7

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2.5 Drilling Rig Use The first well drilled in offshore Newfoundland and Labrador was the Tors Cove D-52 well drilled by the Glomar Sirte drillship in 1966 in the South Whale basin. Grand Falls H-09, also drilled in the South

Rig Name

Rig Type

Rig Owner

Glomar Sirte Typhoon Sedco 445 Pelican Havdrill Discoverer Seven Seas Pelerin Ben Ocean Lancer Petrel Neddrill 2 Glomar Atlantic Pacnorse 1 Stena Carron Rowan Gorilla VI Sedneth 1 Sedco I Sedco H Sedco J Zapata Ugland Ocean Ranger Sedco 706 Bow Drill One Sedco 707 Sedco 709 Sedco 710 SDS Vinland Bow Drill 2 Maersk Vinlander Bow Drill 3 Glomar Grand Banks Henry Goodrich Eirik Raude West Aquarius Figure 2-5: Drilling Rig Use

Drillship Drillship Drillship Drillship Drillship Drillship Drillship Drillship Drillship Drillship Drillship Drillship Drillship Jackup Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible Semi-Submersible

Global Marine Storm Drilling Company Sedco International Somaser Nordic Offshore Drilling Offshore International SA Helmer Staubo & Co. Odeco Offshore Belgium SA Neddrill B. V. Global Marine Drilling Sante Fe Drilling Company Stena Drilling Rowan Companies Inc. Drilling Netherlands Company Sedco International Sedco International Sedco International Zapata Offshore Odeco Sedco International Bow Valley Offshore Drilling Sedco International Sedco International Sedco International Sverre Ditlev-Simonsen (S.D.S.) Valley Offshore Drilling Maersk Company Ltd. Bow Valley Offshore Drilling Glomar International Transocean Ocean Rig Seadrill

Year Built

1965 1969 1971 1972 1973 1976 1976 1976 1976 1977 1978 1979 2008 2000 1967 1970 1970 1972 1974 1976 1976 1976 1976 1977 1982 1982 1983 1983 1984 1984 1985 2002 2008

Number of Wells in this Review

2 1 1 11 2 1 5 2 2 2 2 1 3 2 9 23 1 5 8 2 5 1 1 3 4 2 1 1 3 3 3 4 4

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Newfoundland area, was the only other well drilled in the 1960’s. In total, the 112 wells reviewed used 33 drilling rigs for operations as listed below in Figure 2-5. Considering the fact that the majority of the wells reviewed were drilled in the 1970’s and 1980’s, the rigs used were mostly of the first and second generation at that time. In the Labrador area, the wells reviewed were mainly drilled with drillships while the more current Eastern Newfoundland area wells are being drilled using semi-submersible rigs.

2.6 Total Depth of All Wells In terms of the exploration operations in offshore Newfoundland and Labrador, Figure 2-6 displays the average water depths and total depths of each area. This captures the averages of select parameters over entire regions, however, the detailed well-by-well comparisons (sections 3.1 to 3.4) are more informative in terms of assessing minimum and maximum trends for specific frontier areas. The average total depth drilled ranges from 2800 meters to 3900 meters with the average water depths ranging from 100 meters to 920 meters. As shown, shallow water wells are more prominent than deepwater wells. The first deepwater well was the Blue H-28 well drilled in 1979 with the Discoverer Seven Seas drillship. Amoco Canada’s Jaeger A-49 well was drilled in the shallowest water at 57.9 meters, on the interbasinal high of the South area.

OFFSHORE NEWFOUNDLAND AND LABRADOR AVERAGE WATER AND TOTAL DEPTH OF WELLS 0.0

1000.0

2000.0

3000.0

4000.0

5000.0

OFFSHORE NEWFOUNDLAND & LABRADOR

EASTERN REGION

LABRADOR REGION

SOUTH NL REGION

JEANNE D'ARC REGION

Average Water Depth (m)

Average Total Depth (m)

Figure 2-6: Average Water and Total Depth of Wells Comparison

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Although not yet analyzed as part of this report, the Statoil Cupids A-33 well was drilled in the deepest water at 2835 meters in the Flemish Pass basin in 2015 (Canada - Newfoundland and Labrador Offshore Petroleum Board, 2016). In recent years, particularly in the Eastern Newfoundland area Flemish Pass and Orphan basins, deepwater exploration wells have increased. As for total depth, the maximum total depth drilled was during the East Wolverine G-37 well, which was drilled to a measured depth (MD) of 6857 meters. The maximum total depth below the mudline was drilled during the North Ben Nevis P-93 well which drilled 5161 meters in the Jeanne d’Arc area.

2.7 Total Time on Wells Based on the studied wells, the average time to complete an exploration well in offshore Newfoundland and Labrador was 106 days as seen in Figure 2-7 below. The area with the shortest operations was the South Newfoundland area with an average of 63.7 days per well. The longest operations were in the Jeanne d’Arc and Eastern Newfoundland areas with an average of 145 and 134 days respectively. It is important to note that the total time on the well is not always performance related. As shown in Figure 2-7, the Jeanne d’Arc and Eastern Newfoundland areas both had the highest average total depth drilled so these operations would have taken longer for operational reasons.

OFFSHORE NEWFOUNDLAND AND LABRADOR AVERAGE TIME ON THE WELL DAYS 0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0


EASTERN REGION

LABRADOR REGION

SOUTH NL REGION

JEANNE D'ARC REGION

Figure 2-7: Average Time on the Well

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2.8 Time Distribution Together, the 112 wells reviewed took 11,870 days to complete and with regards to the distribution of this time, a breakdown is displayed in Figure 2-8. As shown, 23 percent of time was spent drilling the well, while 43 percent and nine percent was made up by other rig operations and data acquisition time respectively. In some cases, particularly in the Jeanne d’Arc area, there was a significant amount of time spent on data acquisition when there were hydrocarbon shows in the well. Mobil Oil’s Ben Nevis I-45 well drilled in 1980 in the Jeanne d’Arc area spent nearly 68 days conducting data acquisition.

OFFSHORE NEWFOUNDLAND AND LABRADOR TIME BREAKDOWN OF ALL WELLS Drilling 23% Other Rig Operations 43%

Data Acquisition 9%

NPT 13% Wait On Ice 4%

WOW 8%

Figure 2-8: Average Time Breakdown of all Wells

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In total, 25 percent of time was lost due to non-productive issues, wait on weather and wait on ice. A breakdown of all non-productive time is provided in Figure 2-9 and in addition to wait on weather and wait on ice, other significant issues included hole stability and fishing problems as well as rig and subsea equipment repairs. Downtime varied by well and ranged from zero non-productive time to 142 days in non-productive time. Great Barasway F-66 spent over 38 percent of their well time in non-productive delays. The delays for this well resulted from an emergency disconnect of the lower marine riser package and repairs to the rig’s hull. Other wells such as Cartier D-70, only lost six hours of operational time for rig repairs.

NON-PRODUCTIVE TIME OF ALL WELLS

Data Acquisition Casing/Cementing 2% Well Control 3% 1% Other 5%

Wait on Weather 31%

Subsea Equipment 11%

Rig/Equipment 15%

Wait On Ice 16%

Hole Stability/Fishing 16%

Figure 2-9: Average Non-Productive Time Breakdown of all Wells

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When the areas are compared, the Eastern Newfoundland area had the highest average for wait on weather days while the Jeanne d’Arc area averaged the lowest as seen in Figure 2-10 below. There were less than one day of weather delays on 27 of the wells reviewed while 16 others ranged from 15 to 35 days of weather delays. The major outlier for the Eastern Newfoundland area was the North Dana I-43 well which attributed 128 days to weather and ice delays. If North Dana was removed from the data set the average delay time in the Eastern Newfoundland area would be 7 days. A well-by-well breakdown in provided in section 3.2. In Labrador, weather and ice did not play as large as factor as might be expected but it should be recognized that the drilling season was restricted to the summer and early fall months in order to avoid the major ice season.

OFFSHORE NEWFOUNDLAND AND LABRADOR AVERAGE WAIT ON WEATHER PER WELL 0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0


EASTERN REGION

LABRADOR REGION

SOUTH NL REGION

JEANNE D'ARC REGION

Figure 2-10: Average Wait on Weather per Well Comparison

2.9 Geological Era Overall, drilling operations in offshore Newfoundland and Labrador encountered formations with ages ranging from the earliest Phanerozoic to Precambrian eon. In the Eastern Newfoundland and Jeanne d’Arc areas, samples were mostly found to be in the Tertiary, Cretaceous and Jurassic periods with three wells in the Orphan basin encountering Paleozoic era formations. In the Labrador area, samples were mostly from Tertiary and Cretaceous periods with six wells encountering Paleozoic and six wells encountering Precambrian aged formations. In the South Newfoundland area, again Tertiary, Cretaceous and Jurassic formations were predominantly sampled.

23


EON

ERA

PERIOD

EPOCH

Ma

Holocene

Neogene

Pleistocene

Tertiary

Pliocene Miocene Oligocene

Paleogene

Cenozoic

Quaternary

Eocene Paleocene

Phanerozoic

Mesozoic

Cretaceous Jurassic

Triassic Permian

Late Early Late Middle Early Late Middle Early Late Early

Pennsylvanian Mississippian

Paleozoic

Davantan Silurian Ordovician

Late Middle Early Late Early Late Middle Early D

Proteroz Archean oic

Precambrian

Cambrian

C B A

Late Middle Early Late Middle Early

Late Early Late Early Late Middle Early Late Early Late Middle Early Late Early

0.01 0.8 1.8 3.6 5.3 11.2 16.4 23.7 28.5 33.7 41.3 49 54.8 64 65 99 144 159 180 206 227 242 248 256 290 323 354 370 391 417 423 443 458 470 490 500 512 520 543 900 1600 2500 3000 3400 38007

Figure 2-11: Geological Time Scale (United States Geological Survey (USGS), 2009)

24


2.10 Drilling Mud The wells studied were drilled using both water and synthetic based drilling fluids. Until 1985, wells used only water based muds. Baccalieu I-78 was the first well in offshore Newfoundland and Labrador to use an oil/synthetic based mud. In total, 94 of the 112 wells used water based muds while 18 used oil/synthetic based muds.

2.11 Rate of Penetration The performance of each well can be measured by the rate of penetration during drilling which averaged 9.1 meters per hour for all the reviewed wells as per Figure 2-12 below. The highest average rate of penetration was found in the South Newfoundland area with an average of 11.4 meters per hour for all South Newfoundland area wells. The slowest rate of penetration was averaged in the Labrador area which was 7.2 meters per hour. The Labrador area in particular saw all of its exploratory drilling activity in the 1970’s and early 1980’s and these wells were predominantly drilled using first or second generation drillships. When comparing rates of penetration, it should be recognized that, while wells are being drilled deeper, three major improvements to drilling techniques have influenced drilling performance since the mid-1980's including Top Drives, Synthetic-Based Drilling Fluids, and Polycrystalline Diamond Compact (PDC) Drilling Bits. OFFSHORE NEWFOUNDLAND AND LABRADOR AVERAGE RATE OF PENETRATION PER WELL METERS PER HOUR 0.0

2.0

4.0

6.0

8.0

10.0

12.0


EASTERN REGION

LABRADOR REGION

SOUTH NL REGION

JEANNE D'ARC REGION

Figure 2-12: Average Rate of Penetration per Well Comparison

25


Figure 2-13 displays the average rate of penetration based on the sedimentary basin in which the wells were drilled. As shown, the Laurentian basin in the South Newfoundland area and the Flemish Pass basin in the Eastern Newfoundland area had the highest average rate of penetrations with 13.0 and 11.9 meters per hour respectively. The rate of penetration in the Saglek basin in Labrador was of the slowest rate of penetrations averaging 6.1 meters per hour.

OFFSHORE NEWFOUNDLAND AND LABRADOR RATE OF PENETRATION PER BASIN 0.0

2.0

4.0

METERS PER HOUR 6.0 8.0

10.0

12.0

14.0

FLEMISH PASS BASIN ORPHAN BASIN HOPEDALE BASIN SAGLEK BASIN CARSON BASIN HORSESHOE BASIN LAURENTIAN BASIN SOUTH WHALE BASIN WHALE BASIN JEANNE D'ARC BASIN

Figure 2-13: Average Rate of Penetration per Basin Comparison

Lithological characteristics of each area also could have played a factor in the rate of penetration. Figure 2-14 below provides each area’s rate of penetration by the Tertiary, Cretaceous and Jurassic geological ages. As the chart shows, there is a prevailing trend of a decreasing rate of penetration as the drill bit hits older formations such as the Jurassic aged rocks due to the compaction and cementation or increased burial. The South Newfoundland area had the highest rate of penetration in the Tertiary and Cretaceous formations while the Eastern Newfoundland area saw the highest rate in the Jurassic formation. In Labrador, there were no Jurassic aged rocks penetrated and it is important to note that other geological aged periods were encountered in all areas but due to the sporadic nature of the occurrence, there was insufficient data to establish a clear indication of overall performance in those periods. However, the individual well summaries capture each wells performance in the geological time periods per that well.

26


AVERAGE RATE OF PENETRATION IN GEOLOGICAL FORMATIONS 0.0

5.0

10.0

15.0

20.0

25.0

30.0


EASTERN REGION

LABRADOR REGION

SOUTH NL REGION

JEANNE D'ARC REGION

TERTIARY

CRETACEOUS

JURASSIC

Figure 2-14: Average Rate of Penetration in Geological Formations

Additionally, the rate of penetration in wells using water based drilling muds versus wells using synthetic based mud is provided in Figure 2-15. As shown, wells which used a synthetic based mud averaged a higher rate of penetration than those that used water based muds. The synthetic based muds also reduced the occurrence of hole stability and downtime arising from hole instability.

AVERAGE RATE OF PENETRATION IN FORMATIONS BASED ON MUD 0.0

2.0

4.0

METERS PER HOUR 6.0

8.0

10.0

12.0

CRETACEOUS

JURASSIC

Synthetic Based Mud

Water Based Mud

Figure 2-15: Average Rate of Penetration in Formations Based on Mud

27


3.0 Drilling Performance – Area Analysis For the purpose of this study, offshore Newfoundland and Labrador was broken into four areas so that a comprehensive regional analysis of drilling performance could be made. The four area groupings are Labrador, Eastern Newfoundland, Jeanne d’Arc, and South Newfoundland.

28


3.1 Labrador Area Analysis Located in the North Atlantic Ocean, east of the land mass known as Labrador, the area is divided into three sub-regions for the purpose of this study – Labrador North, Labrador South and North Eastern Newfoundland. These areas are made up of seven sedimentary basins – Saglek, Henley, Chidley, Hopedale, Hawke, Holton and St. Anthony.

Figure 3-1: Labrador Area Boundaries

29


3.1.1 Overview of Wells Reviewed in the Labrador Area There were 26 wells studied in the Labrador area during this review. This includes 18 wells drilled in the Labrador South, seven in the Labrador North and one in North Eastern Newfoundland. Overall, the Labrador offshore remains largely underexplored with a total of one well per 4000 square kilometers (Canada - Newfoundland and Labrador Offshore Petroleum Board, 2016). Operators included Eastcan and Total Eastcan Exploration for six and seven operations respectively. Petro-Canada also conducted seven operations while Chevron and BP Exploration Canada both completed two wells in Labrador. Tenneco Oil and Minerals and Canterra Energy operated on just one well each. All wells were drilled on either the Hopedale, Saglek or St. Anthony sedimentary basin. Detailed well summaries can be found in Appendix A. Area

Labrador South

Labrador North

North Eastern NL

Operator Tenneco Oil and Minerals Limited Eastcan Exploration Limited Eastcan Exploration Limited Eastcan Exploration Limited Eastcan Exploration Limited BP Exploration Canada Limited Eastcan Exploration Limited Total Eastcan Exploration Limited Chevron Standard Limited Total Eastcan Exploration Limited Total Eastcan Exploration Limited Total Eastcan Exploration Limited Petro-Canada Incorporated Chevron Standard Limited Petro-Canada Incorporated Petro-Canada Incorporated Petro-Canada Incorporated Canterra Energy Limited Eastcan Exploration Limited Total Eastcan Exploration Limited Total Eastcan Exploration Limited Total Eastcan Exploration Limited Petro-Canada Incorporated Petro-Canada Incorporated Petro-Canada Incorporated BP Exploration Canada Limited

Well Name Leif E-38 Leif M-48 Bjarni H-81 Gudrid H-55 Freydis B-87 Indian Harbour M-52 Cartier D-70 Herjolf M-92 Hopedale E-33 Roberval K-92 Tyrk P-100 Bjarni O-82 Roberval C-02 South Labrador N-79 North Leif I-05 North Bjarni F-06 Corte Real P-85 South Hopedale L-39 Snorri J-90 Karlsefni A-13 Skolp E-07 Gilbert F-53 Ogmund E-72 Rut H-11 Pothurst P-19 Hare Bay E-21

Year Spudded 1971 1973 1973 1974 1975 1975 1975 1976 1978 1978 1979 1979 1980 1980 1980 1980 1981 1983 1975 1975 1978 1979 1980 1981 1982 1979

Table 3-1: Labrador Area – Wells by Operator

30


The wells study are all classified as exploration wells with the exception of Bjarni O-82 which was classified as a delineation well. As displayed in Figure 3-1, the wells were drilled along the stretch of the Labrador coast on the continental shelf as companies tried to establish the prospects of the coastal area. The oldest well reviewed was Leif E-38 located in the lower half of the Hopedale basin in the Labrador South area. From there, Leif M-48 was drilled just north of Leif E-38 followed by Bjarni H-81 which was located north of the Leif wells in the central part of the Hopedale basin. The Gudrid H-55, located half way between the Bjarni and Leif wells, was drilled next with the success of these wells helping form the objectives of the wells to follow as operators continued to explore the offshore Labrador area. Karlsefni A-13 was the first well drilled in the Saglek basin of the Labrador North area. Figure 3-2 displays the water depth and total depth for each well. The wells were drilled in water depths ranging from 117 meters to 580 meters with an average of 236.3 meters for all wells. The total drilling depth for the wells ranged from 1084 meters to 4551 meters with an average of 3113 meters for all wells.

LABRADOR AREA- WATER DEPTH AND TOTAL DEPTH PER WELL 0

1000

2000

3000

Leif E-38 Leif M-48 Bjarni H-81 Gudrid H-55 Freydis B-87 Snorri J-90 Karlsefni A-13 Indian Harbour M-52 Cartier D-70 Herjolf M-92 Skolp E-07 Hopedale E-33 Roberval K-92 Hare Bay E-21 Tyrk P-100 Bjarni O-82 Gilbert F-53 Roberval C-02 South Labrador N-79 Ogmund E-72 North Leif I-05 North Bjarni F-06 Rut H-11 Corte Real P-85 Pothurst P-19 South Hopedale L-39

4000

5000

6000

Water Depth (m) Total Depth (m)

Figure 3-2: Labrador Area - Water Depth and Total Depth per Well.

31


3.1.2 Drilling Rigs Used Offshore Labrador There were 13 rigs used for this set of wells in Labrador and of these, 10 were drillships and three were semi-submersible rigs. The drillships used were all either first or second generation ships. The second generation drillships were of the first to have dynamic positioning capabilities. Six of the drillships used were a part of the ‘Pelican’ class which were built starting in 1972. The first of these drillships was the Pelican which was one of the first drillships to introduce the dynamic positioning system for drillships offshore Newfoundland and Labrador. The Pelican was used during the operations of 11 of the wells reviewed for the Labrador area. Other ‘Pelican’ class drillships, including the Havdrill, Pelerin, Ben Ocean Lancer, Petrel and Pacnorse 1 were used during the operations of 11 of the 26 wells reviewed for the Labrador area. Rig Type Semi-Submersibles

Drillships

Rig Name Sedco J Zapata Ugland Sedco 707 Typhoon Sedco 445 Pelican Havdrill Pelerin Ben Ocean Lancer Petrel Neddrill 2 Glomar Atlantic Pacnorse 1

Year Built 1972 1974 1976 1969 1971 1972 1973 1976 1976 1976 1977 1978 1979

Table 3-2: Summary of Drilling Rigs used during Labrador Area Wells

32


3.1.3 Time Breakdown for Wells Offshore Labrador The total time for each well reviewed offshore Labrador is displayed in Figure 3-3. The total time on the well varied for each operation and was impacted by non-productive time, drilling issues and wait on weather. The drilling season in Labrador was restricted to the summer and early fall months due to the potential for weather impact on operations during winter months. This meant that a number of wells were suspended at the end of the operating season and then re-entered during the following summer. Eleven wells studied had such operational interruptions, with three of these wells having more than one reentry. The Leif M-48 well was completed in the shortest amount of time at 27.3 days and Corte Real P85 was the slowest operation at 217.9 days. The average for all wells in the region was 96.7 days. LABRADOR AREA WELLS - TOTAL TIME ON THE WELL DAYS 0.0

50.0


100.0

150.0

200.0

250.0

2 years 2 years 2 years Minimum - 27.3 days Average - 96.7 days Maximum - 217.9 days 3 years

3 years 2 years

2 years 2 years 3 years 4 years 2 years

Figure 3-3: Labrador Area Total Time per Well

33


As shown in the time breakdown of the Labrador area wells, only 21 percent of total time was spent on drilling the wells while 46 percent was spent on other required rig operations along with 7 percent on data acquisition (Figure 3-4). A total of 26 percent of time was lost to non-productive activities including wait on weather and ice. This figure excludes the time spent on North Bjarni F-06 because there was no time distribution data available in the end of well report provided. Because of this, only drill time from the bit record was able to be calculated and the total 10.4 days drilling time on this well does not affect the percentages displayed in this figure.

LABRADOR AREA - TIME BREAKDOWN OF WELLS Drilling 21%

Other Rig Operations 46%

Data Acquisition 7%

Non-Productive Time 15% Wait on Ice 3%

Wait on Weather 8%

Figure 3-4: Time Breakdown of Labrador Area Wells

34


As shown in Figure 3-5, the Leif M-48 well was one of the more productive wells, in terms of drilling, with a total of 62.3 meters drilled per day of operations. The least productive drilling well was Leif E-38, which also was the lowest total depth reached, with 14.9 meters drilled per day of the well. LABRADOR AREA - METERS PER DAY OF WELL METRES

0

10

20


30

40

50

60

70

Minimum - 14.9 m/day Average - 30.4 m/day Maximum - 62.3 m/day

Figure 3-5: Labrador Area – Meters per day of Well

35


Though the reports rarely specified the planned time of the well, Figure 3-6 shows the time spent on each well with the non-productive and wait on weather times added to the end. This figure displays the effect of these time delays on the total time on the well. For example, Pothurst P-19 spent over half of its time on delays and without these, the well would have taken less than 100 days as opposed to the actual 183 days. As well, wells like Leif M-48 were of the fastest wells completed and had the least amount of delay time. LABRADOR AREA - TIME DISTRIBUTION OF WELLS 0

50

100

150

200

250

Leif E-38 Leif M-48 Bjarni H-81 Gudrid H-55 Freydis B-87 Snorri J-90 Karlsefni A-13 Indian Harbour M-52 Cartier D-70 Herjolf M-92 Skolp E-07 Hopedale E-33 Roberval K-92 Hare Bay E-21 Tyrk P-100 Bjarni O-82 Gilbert F-53 Roberval C-02 South Labrador N-79 Ogmund E-72 North Leif I-05 North Bjarni F-06 Rut H-11 Corte Real P-85 Pothurst P-19 South Hopedale L-39 Drilling

Data Acquisition

Other Rig Operations

Non-Productive Time

Wait on Weather

Figure 3-6: Labrador Area Time Distribution of Wells

36


3.1.4 Drilling Time Offshore Labrador As stated above, drilling time accounted for 21 percent of the total time spent on the Labrador area wells. Total drilling time by well is displayed in Figure 3-7. Leif E-38 had the shortest drilling time while Hare Bay E-21 spent the most time drilling. The average for these wells was 19.8 days drilling. LABRADOR AREA - TOTAL DRILLING TIME PER WELL 0

5

10

15


20

25

30

35

40

45

50

Minimum - 4.3 days Average - 19.8 days Maximum - 45.4 days

Figure 3-7: Labrador Area Total Drilling Time per Well

It should be noted that there have been a number of innovations in drilling practices since the Labrador wells were drilled. For instance, 18-3/4” BOP’s were not available during this period. As a result, operators were required to under-ream the hole for 13-3/8” casing (16-3/4” BOP stack), or use a twoBOP (20-3/4” low pressure plus 13-5/8” high pressure) stack system. Both configurations required more operational time than modern systems. Synthetic-based drilling fluid systems were not used on early exploration wells. This resulted in exposure to a number of well stability issues (reaming, fishing and circulating) below surface casing. None of the rigs used on Labrador shelf operations were equipped with top drives. The Kelly equipped rigs required three times as many connections and greatly increased the time required for reaming and back-reaming. The Labrador area drilling all occurred before effective 37


PDC bits were developed which could drill the variable lithologies which are encountered and impossible to predict in exploration wells drilled offshore Newfoundland and Labrador. Reliable measurement while drilling (MWD) and logging while drilling (LWD) tools did not exist during this period. This resulted in additional time spent in obtaining directional surveys and limited ability to detect and manage downhole bottom hole assembly (BHA) vibrations. This was the case for wells drilled across Newfoundland and Labrador’s offshore but was specifically a challenge during operations on the Labrador and South Newfoundland area wells

3.1.5 Rate of Penetration during Drilling Time Figure 3-8 shows the average rate of penetration of each well. The average rate of penetration for each well in Labrador ranged from 4.2 meters per hour to 12.4 meters per hour. The wells penetrated formations of Tertiary and Cretaceous periods, as well as Paleozoic era. There were also Precambrian basement rocks encountered but there were no Jurassic aged rocks encountered in this area in the wells studied based on the information taken from the end of well reports for each well. LABRADOR AREA - AVERAGE RATE OF PENETRATION PER WELL 0

2

4

6


8

10

12

14

Hopedale Saglek St. Anthony

- Minimum - 4.2 m/hr - Average - 6.2 m/hr - Maximum - 12.4 m/hr

Figure 3-8: Labrador Area Average Rate of Penetration per Well

38


3.1.6 Non-Productive Time Experienced Offshore Labrador For the 26 wells reviewed in Labrador, the total time of all operations with the exception of North Bjarni F-06 was 2439.5 days with a total of 461.6 days in non-productive time. This means that 19 percent of all operation time of the wells reviewed in Labrador was unplanned and non-productive. Figure 3-9 shows the amount of non-productive time by well. As shown, the non-productive time of the wells were varied with 13 of the 25 wells reviewed having less than ten days in non-productive time. Cartier D-70 had the least amount of time delay with 0.25 days. In five other wells, total non-productive time exceeded 30 days. Pothurst P-19 spent 89 days in non-productive delays which accounted for 47.6 percent of the total time on the well. Also, Rut H-11 and Corte Real P-85 had non-productive delays of 30.5 and 29.7 percent of total time respectively. LABRADOR AREA - NON-PRODUCTIVE TIME PER WELL 0

10

20

30

40


DAYS 50

60

70

80

90

100

Minimum - 0.25 days Average - 17.75 days Maximum - 89 days

Figure 3-9: Labrador Area Non-Productive Time per Well

39


As shown in Figure 3-10, hole stability accounted for 20 percent of non-productive issues. Hole stability was an issue for multiple wells but specifically Rut H-11 and Corte Real P-85 as these two wells had significant time delays concerning this problem. Rut H-11 lost 25.1 days and Corte Real P-85 lost 25.6 days. Hole stability also includes issues ranging from circulation to failed spuds and holes. Boulders have been a significant problem for five of the Labrador wells. Leif E-38 was originally designed as Leif P-48 but the boulder bed in the location of Leif P-48 caused difficulties as attempts to run surface casing failed five times. The well was then re-designated as Leif E-38 and moved almost a kilometer south of the original hole. The failed time of Leif P-48 was 25 days but since the well was redesigned, this time is not included in the total time on the well or non-productive time. Once again, problems arose at the new location of Leif E-38 and the hole had to be moved again before it could be successfully drilled. This caused a delay of 12.7 days of the well. During Gudrid H-55, the original hole was abandoned after the 30-inch conductor pipe was set too low. As well, both Indian Harbour M-52 had five and South Labrador N-79 had three unsuccessful spud attempts during operations. Herjolf M-92 ran into issues while trying to re-enter the well as silt caused poor visibility at the wellhead resulting in the need to move to a new location. A total of 48.4 of the 461.6 days in non-productive time for all wells were spent on repairs to subsea equipment. Of this time, 33 days were for BOP repairs. Fishing operations accounted for 18 percent of the non-productive time. Most significantly, Rut H-11 spent 17 days on fishing operations and Pothurst P-19 was delayed for 15 days for fishing. As well, Roberval K-92 attempted but failed to sidetrack the well due to issues with the drillship’s thrusters. LABRADOR AREA - NON-PRODUCTIVE TIME BREAKDOWN Other Subsea Equipment 3% 7%

Well Control Casing/Cementing 3% 1%

Rig/Equipment 17%

Wait on Weather 31%

Wait on Ice 12% Hole Stability/Fishing 26%

Figure 3-10: Labrador Area Non-Productive Time Breakdown

40


3.1.7 Wait on Ice Delays Offshore Labrador In general, the Labrador wells were drilled in a relatively short drilling season from July to October to avoid spring ice, icebergs and late fall/winter storms. The ice and icebergs were lightest in the summer/fall season post July. Despite this, a total of 78 days were attributed to wait on ice and icebergs for all Labrador wells reviewed, excluding North Bjarni F-06. This is 17 percent of all non-productive time. Leif E-38, Leif M-48, Bjarni H-81, Freydis B-87 and Cartier D-70 did not provide a report on wait on ice. Indian Harbour M-52 provided wait on ice time for only one of the two years of operations and Gudrid H-55 combined wait on ice with wait on weather so the time has been classified as wait on weather. The most significant ice delay was during the Pothurst P-19 well with 41.7 days of delay caused by ice/icebergs.

3.1.8 Effects of Wait on Weather Offshore Labrador Wait on weather accounted for eight percent of total well time for all wells reviewed in the Labrador area. The total time spent on all wells with the exception of North Bjarni F-06 was 2439.5 days and a total of 209.9 days were wait on weather time. Figure 3-11 shows the wait on weather time per well. Weather was a contributor to the suspension of a number of wells. As the wells were drilled into the fall season, at times, the worsening weather caused such significant delays that it was decided to suspend until the next year. Leif M-48, Herjolf M-92, Tyrk P-100 and South Hopedale L-39 were all able to complete operations without any delays due to weather. Bjarni O-82 had the highest weather delay with 31.2 days which accounted for 19.3 percent of total operations. As well, Cartier D-70 had 11 days of wait on weather which was 30.2 percent of total operations.

41


LABRADOR AREA - WAIT ON WEATHER TIME PER WELL DAYS 0

5

10

15


20

25

30

35

- Minimum - 0 days - Average - 8.1 days - Maximum - 31.2 days

Figure 3-11: Labrador Area Wait on Weather Time per Well

3.1.9 Drilling Fluids Used in Labrador The Labrador wells reviewed were all drilled with seawater and water based muds. The tactic for some of the wells was to begin drilling with sea water and switch to a water based mud once the surface casing had been set. The drilling muds varied during the drilling of each well and had weights ranging from 1030 to 1980 kg/m3.

3.1.10 Status of the Labrador Wells Drilling offshore Labrador ended in 1984 and no wells have been drilled there since. Although it took several years of re-entries in some cases, the wells drilled were plugged and abandoned. Recent seismic has identified new basins offshore Labrador, particularly on the slope into deepwater. The deepwater offshore Labrador remains unexplored.

42


3.1.11 Labrador Summary Based on the wells reviewed, drilling operations in Labrador using a first or second generation drillship would be expected to have the following average characteristics: · · · · · ·

Water Depth = 236 meters Drilling Depth = 2864 meters Well time = 97 days including 15 days of non-productive time Wait on Ice Time = 3 days Wait on Weather Time = 8 days Total Drilling Time = 20 days

Wells with specific objectives (i.e. Cretaceous target drilled in a slope region) will have different Drilling performance metrics as the above information includes all data for all wells and represent an average of such data. More detailed planning can be conducted as a result of the information compiled in this study.

43


3.2 Eastern Newfoundland Area Analysis The Eastern Newfoundland Area is located north and east of the Jeanne d’Arc basin and is composed of two sedimentary basins – Flemish Pass and Orphan. As of April 2016, 36 exploration wells have been drilled in this region since 1974.

Figure 3-12: Eastern Area Boundaries

44


3.2.1 Overview of Wells Reviewed in the Eastern Newfoundland Area In total, 36 exploration wells have been drilled in the Eastern Newfoundland area. For the purpose of this study, 25 of these wells were analyzed. Since 1974, eight operators have drilled exploration wells in the Eastern Newfoundland area. They include BP Exploration Canada Limited, Mobil Oil Canada Limited, Texaco Canada Resources Limited, Esso Resources Canada Limited, Husky Oil Operations Limited, Petro Canada Incorporation, Chevron Canada Limited and Statoil Canada Limited. Detailed well summaries can be found in Appendix B. Basin

Flemish Pass

Orphan

Operator Esso Resources Canada Limited Mobil Oil Canada Limited Husky Oil Operations Limited Esso Resources Canada Limited Petro-Canada Incorporated Esso Resources Canada Limited Husky Oil Operations Limited Petro-Canada Incorporated Petro-Canada Incorporated StatoilHydro Canada Limited Statoil Canada Limited Statoil Canada Limited Statoil Canada Limited Statoil Canada Limited BP Exploration Canada Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Texaco Canada Resources Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Mobil Oil Canada Limited BP Resources Canada Limited Chevron Canada Limited Chevron Canada Limited Chevron Canada Limited

Well Name Gabriel C-60 North Dana I-43 Panther P-52 Baccalieu I-78 Lancaster G-70 Kyle L-11 Golconda C-64 Mizzen L-11 Tuckamore B-27 Mizzen O-16 Mizzen F-09 Harpoon O-85 Bay du Nord C-78 Bay du Nord C-78z Bonavista C-99 Dominion O-23 Cumberland B-55

Year Spudded 1979 1982 1985 1985 1986 1986 1986 2003 2003 2008 2011 2013 2013 2013 1974 1974 1975

Blue H-28

1979

Sheridan J-87 Bonanza M-71 Linnet E-63 Baie Verte J-57 Great Barasway F-66 Lona O-55 Margaree A-49

1981 1982 1982 1985 2006 2010 2013

Table 3-3: Eastern Newfoundland Area Wells by Basin and Operating Company

The wells reviewed are classified as exploration wells with the exception of Mizzen F-09 which was a delineation well. The first well drilled in the Eastern Newfoundland area was Bonavista C-99 which was 45

Drilling Performance Review – Offshore Newfoundland and Labrador drilled in the Orphan basin in June of 1974. Gabriel C-60 was the first well drilled in the Flemish Pass basin and was drilled in 1979. The most recent well reviewed for this study was Bay du Nord C-78z which is a sidetrack of Bay du Nord C-78 and both were drilled in the summer of 2013. From 1974 until 1987, drilling operations were completed for 15 of the 25 wells reviewed. There was a gap in operations from then until 2003 when the other 10 wells completed operations up until 2013. Since the summer of 2013, 12 additional well operations have been conducted in this region but at the time of this study, the end of well reports were not available so these wells are not included in the scope. Figure 3-13 displays the water depth and total depth for each well reviewed. The wells were drilled in water depths ranging from 160.0 meters to 2602.4 meters with an average of 921.2 meters for all wells. The total drilling depth for the wells ranged from 3377.0 meters to 6751.0 meters with an average of 4626.3 meters for all wells. EASTERN NEWFOUNDLAND AREA - WATER AND TOTAL DEPTH PER WELL 0.0

1000.0

2000.0

3000.0

METRES 4000.0

5000.0

6000.0

7000.0

8000.0

Bonavista C-99 Dominion O-23 Cumberland B-55 Blue H-28 Gabriel C-60 Sheridan J-87 Bonanza M-71 Linnet E-63 North Dana I-43 Panther P-52 Baccalieu I-78 Baie Verte J-57 Lancaster G-70 Kyle L-11 Golconda C-64 Mizzen L-11 Tuckamore B-27 Great Barasway F-66 Mizzen O-16 Lona O-55 Mizzen F-09 Harpoon O-85 Margaree A-49 Bay Du Nord C-78 Bay Du Nord C-78z Water Depth (m)

Total Depth MD (m)

Figure 3-13: Eastern Newfoundland Area Water and Total Depth per Well

46


3.2.2 Drilling Rigs Used Offshore Eastern Newfoundland There were 14 drilling rigs used for the Eastern Newfoundland Area wells reviewed. Three of these were drillships and 11 were semi-submersible rigs. The semi-submersible units varied from first generation to sixth generation classifications. The Sedco 709, Sedco 710, the Eirik Raude and the West Aquarius operated by dynamic positioning while the rest of the semi-submersibles were moored to the seafloor during operations. For the Mizzen O-16 deepwater well operated by StatoilHydro, preset deepwater moorings were installed prior to the arrival of the Henry Goodrich. The Havdrill and Discoverer Seven Seas are considered second generation drillships and the Stena Carron is a sixth generation drillship. All three had dynamic positioning capabilities. Rig Type Semi-Submersibles

Drillships

Rig Name Sedco J Zapata Ugland Ocean Ranger Sedco 706 Bow Drill 1 Sedco 709 Sedco 710 Bow Drill 3 Henry Goodrich Eirik Raude West Aquarius Havdrill Discoverer Seven Seas Stena Carron

Year Built 1972 1974 1976 1976 1976 1977 1982 1984 1985 2002 2008 1973 1976 2008

Table 3-4: Eastern Newfoundland Area Drilling Rig Used per Well

47


3.2.3 Time Breakdown for Wells Offshore Eastern Newfoundland The total time on each well is displayed in Figure 3-14 below. The average time for all 25 wells was 133.8 days. The Bay du Nord C-78z well was completed in the shortest amount of time while North Dana I-43 took the longest amount of time to complete. There were four wells with over 200 days of operations and nine wells with less than 100 days of operations. The total time spent on all 25 Eastern Newfoundland Area wells was 3347 days. Drilling time accounted for 23 percent of this time while other rig operations and data acquisition made up 46 and 6 percent respectively. Non-productive time and wait on weather accounted for 16 percent and 9 percent of total time (Figure 3-15). The number of meters drilled per day is presented in Figure 3-16 and provides an indication of drilling operation productivity. The Dominion O-23 well was one of the most productive wells with a total of 57.4 meters per day. The least productive was North Dana I-43 with 11.8 meters drilled per day. The average drilling operation productivity for all wells was 32.6 meters per day. Alternatively, Figure 3-17 displays the time breakdown of each well with non-productive and wait on weather delays added to the end of the well time. As shown, the operations of the North Dana I-43 well were greatly affected by weather delays while Great Barasway F-66 spent almost 40 percent of operations dealing with nonproductive time delays.

EASTERN NEWFOUNDLAND AREA - TOTAL TIME ON THE WELL 0.0

50.0

100.0

150.0

200.0

Bonavista C-99 Dominion O-23 Cumberland B-55 Blue H-28 Gabriel C-60 Sheridan J-87 Bonanza M-71 Linnet E-63 North Dana I-43 Panther P-52 Baccalieu I-78 Baie Verte J-57 Kyle L-11 Lancaster G-70 Golconda C-64 Mizzen L-11 Tuckamore B-27 Great Barasway F-66 Mizzen O-16 Lona O-55 Mizzen F-09 Harpoon O-85 Margaree A-49 Bay Du Nord C-78 Bay Du Nord C-78z

250.0

300.0

350.0

400.0

450.0


Figure 3-14: Eastern Newfoundland Area Total Time on the Well

48


EASTERN NEWFOUNDLAND AREA - TIME BREAKDOWN OF WELLS Drilling 23% Other Rig Operations 46% Data Acquisition 6%

Non-Productive Time 16% Wait on Ice 0%

Wait on Weather 9%

Figure 3-15: Eastern Newfoundland Area Time Breakdown of Wells

EASTERN NEWFOUNDLAND AREA - METERS PER DAY OF WELL METERS 0.0

10.0

20.0

30.0


40.0

50.0

60.0

70.0


Figure 3-16: Eastern Newfoundland Area Meters per day of Well

49


EASTERN NEWFOUNDLAND AREA - TIME DISTRIBUTION PER WELL 0.0

50.0

100.0

150.0

200.0

250.0

300.0

350.0

400.0

450.0

Bonavista C-99 Dominion O-23 Cumberland B-55 Blue H-28 Gabriel C-60 Sheridan J-87 Bonanza M-71 Linnet E-63 North Dana I-43 Panther P-52 Baccalieu I-78 Baie Verte J-57 Kyle L-11 Lancaster G-70 Golconda C-64 Mizzen L-11 Tuckamore B-27 Great Barasway F-66 Mizzen O-16 Lona O-55 Mizzen F-09 Harpoon O-85 Margaree A-49 Bay Du Nord C-78 Bay Du Nord C-78z Drilling

Data Acquisition


Non-Productive Time

Wait on Weather

Figure 3-17: Eastern Newfoundland Area Time Distribution per Well

50


3.2.4 Drilling Time Offshore Eastern Newfoundland Drilling time ranged from 2.6 days on Bay du Nord C-78z to 65.1 days on Lancaster G-70 (Figure 3-18). The average drill time for all wells was 27.5 days. As figure 3-18 displays, there is a visible trend of decreasing drilling times for the more recent wells. When the wells are categorized by age, the older wells completed prior to or in 1987 averaged a drilling time of 45.3 days and the newer wells completed during or later than 2003, averaged 10.3 days of drilling time.

EASTERN NEWFOUNDLAND AREA - TOTAL DRILLING TIME PER WELL DAYS 0.0

10.0

20.0

30.0

40.0

Bonavista C-99 Dominion O-23 Cumberland B-55 Blue H-28 Gabriel C-60 Sheridan J-87 Bonanza M-71 Linnet E-63 Panther P-52 Baccalieu I-78 Baie Verte J-57 Kyle L-11 Lancaster G-70 Golconda C-64 Mizzen L-11 Tuckamore B-27 Great Barasway F-66 Mizzen O-16 Lona O-55 Mizzen F-09 Harpoon O-85 Margaree A-49 Bay Du Nord C-78 Bay Du Nord C-78z

50.0

60.0

70.0


Figure 3-18: Eastern Newfoundland Area Total Drilling Time per Well

51


3.2.5 Rate of Penetration during Drilling Time The average rate of penetration for wells in the Eastern Newfoundland Area was 9.6 meters per hour. The slowest rate of penetration was during Kyle L-11 which had an average rate of penetration of 2.8 meters per hour while drilling (Figure 3-19). The fastest rate of penetration was during Bay du Nord C-78 which averaged 31.8 meters per hour while drilling. Similarly, to the drilling time trend, the average rate of penetration of the wells has increased on the more recent operations. Wells completed in 1987 or earlier averaged a rate of penetration of 4.8 meters per hour while wells completed in 2003 and later averaged 16.8 meters per hour. The wells penetrated formations of Quaternary, Tertiary, Cretaceous and Jurassic ages. EASTERN NEWFOUNDLAND AREA - AVERAGE RATE OF PENETRATION OF WELL METRES 0.0

5.0

10.0

15.0

20.0

Bonavista C-99 Dominion O-23 Cumberland B-55 Blue H-28 Gabriel C-60 Sheridan J-87 Bonanza M-71 Linnet E-63 Panther P-52 Baccalieu I-78 Baie Verte J-57 Kyle L-11 Lancaster G-70 Golconda C-64 Mizzen L-11 Tuckamore B-27 Great Barasway F-66 Mizzen O-16 Lona O-55 Mizzen F-09 Harpoon O-85 Margaree A-49 Bay Du Nord C-78 Bay Du Nord C-78z

25.0

30.0

35.0

Minimum - 2.8 m/hr Average - 9.9 m/hr Maximum - 31.8 m/hr

Figure 3-19: Eastern Newfoundland Area Average Rate of Penetration of Well

52


3.2.6 Non-Productive Time Experienced Offshore Eastern Newfoundland During the operations for the 25 wells reviewed in the Eastern Newfoundland area, a total of 531.4 days were spent on non-productive delays. This accounts for 16 percent of the time for all wells. Bay du Nord C-78z and Dominion O-23 were drilled with the least amount of non-productive time having delays of 0.5 of a day and 0.7 of a day respectively. The well with the highest non-productive time was Great Barasway F-66 which had 102.2 days of delays. The average for all wells reviewed was 21.3 days (Figure 3-20).

EASTERN NEWFOUNDLAND AREA - NON-PRODUCTIVE TIME PER WELL 0.0

20.0

40.0

DAYS 60.0


80.0

100.0

120.0


Figure 3-20: Eastern Newfoundland Area Non-Productive Time per Well

53


Figure 3-21 provides a category breakdown of the non-productive time for the Eastern Newfoundland Area wells. The largest source of delay was due to subsea equipment issues which accounted for 34 percent of all non-productive time. Of the 25 wells reviewed, 17 were delayed by subsea equipment issues including eight that had more than ten days of delays for this problem. Specifically, Lancaster G70 was delayed for 23 days due to issues with the BOP. Other significant sources of delay included rig equipment repairs and fishing operations which caused 17 and 15 percent of all non-productive time respectively.

EASTERN NEWFOUNDLAND AREA - NON-PRODUCTIVE TIME BREAKDOWN Other Casing/Cementing 3% 4%

Data Acquisition Well Control 1% 1%


Wait on Weather 36%

Rig/Equipment 17% Wait on Ice 1%


Figure 3-21: Eastern Newfoundland Area Non-Productive Time Breakdown

3.2.7 Wait on Ice Delays Offshore Eastern Newfoundland Ice delays were minimal during the drilling of Eastern Newfoundland Area wells as only two of the 25 wells reviewed were affected by ice. Baccalieu I-78 was delayed for 3.4 days and Golconda C-64 was delayed for 3.7 days.

3.2.8 Effects of Wait on Weather Offshore Eastern Newfoundland Weather delays were a factor in 21 of 25 wells reviewed in the Eastern Newfoundland Area (Figure 322). The shortest weather delay was during Dominion O-23 which had 0.3 of a day in wait on weather 54


time. The average for all wells was 11.8 days with the anomalous North Dana well having a large impact on this average.

EASTERN NEWFOUNDLAND AREA - WAIT ON WEATHER DELAY DAYS 0.0

20.0

40.0

60.0

80.0


100.0

120.0

140.0


Figure 3-22: Eastern Newfoundland Area Wait on Weather Delay

3.2.9 Drilling Fluids Used in Eastern Newfoundland Wells From 1974 until mid-1985, the wells drilled in the Eastern area used water based muds with weights ranging from 1042.5 to 1953.2 kg/m3. In May 1985, Baccalieu I-78 became the first well drilled in offshore Newfoundland and Labrador to use an oil/synthetic based mud. The only other well from the 1980’s to use oil/synthetic based mud was Kyle L-11. When operations in the Eastern Newfoundland Area began again in 2003, the trend was to use water based muds for the riser-less sections (i.e. Conductor and surface hole). After running the BOP stack, synthetic based muds were then used for the rest of the well. The synthetic based muds used ranged from weights of 922.7 to 1501.0 kg/m3.

55


3.2.10 Status of the Eastern Newfoundland Wells As stated in section 2.2, activity in the Eastern Newfoundland Area has increased greatly since 2003. Ten wells were drilled from 2003 until the summer of 2013 and since then there have been 12 additional exploration wells drilled in this region that are not included in the scope of this report.

3.2.11 Eastern Newfoundland Summary All wells were drilled on the Flemish Pass or Orphan Basin in water depth averaging 921 meters. Wells were drilled as deep as 6751 meters and averaged 4626 meters. Due to the time gap of when the wells were drilled, a comparison of drilling metrics from 1974 to 1987 versus what would be expected in the mid-2000s until today is provided below. The average well drilled in the Eastern Newfoundland Area prior to 2003 with a first or second generation drilling rig had the following average characteristics: · · · · · ·

Water Depth = 511.6 meters Drilling Depth = 4826 meters Well time = 153 days including 18 days of non-productive time Wait on Ice Time = 0.5 days Wait on Weather Time = 14.6 days Total Drilling Time = 45.3 days

The average well drilled in the Eastern Newfoundland Area post 2003 with a third generation drilling rig or newer had the following average characteristics: · · · · · ·

Water Depth = 1536 meters Drilling Depth = 4327 meters Well time = 105 days including 26 days of non-productive time Wait on Ice Time = 0 days Wait on Weather Time = 7.6 days Total Drilling Time = 10.3 days

Wells with specific objectives (i.e. Cretaceous target drilled in a slope region) will have different drilling performance metrics as the above information includes all data for all wells and represent an average of such data. More detailed planning can be conducted as a result of the information compiled in this study.

56


3.3 Jeanne d’Arc Area Analysis The Jeanne d’Arc area is the location of a number of significant discoveries from early exploration wells and is currently the only producing area in offshore Newfoundland and Labrador. This area is a well explored, mature producing area consisting of just the Jeanne d’Arc basin and is located on the Grand Banks east of the island of Newfoundland.

Figure 3-23: Jeanne d’Arc Area Boundaries

57


3.3.1 Overview of Wells Reviewed in Jeanne d’Arc Area As of April 2016, there have been 57 exploration wells drilled in the Jeanne d’Arc area (Canada Newfoundland and Labrador Offshore Petroleum Board, 2016). For the study, 26 of these wells were reviewed. Since 1971, 11 operators have conducted drilling operations in the Jeanne d’Arc area. Seven operator’s wells were reviewed during this study. These include Mobil Oil Canada Limited for eight operations, Husky Oil Operations Limited for six operations, Petro-Canada Incorporated for five operations, Amoco Canada Petroleum Company Limited for three operations, Chevron Standard Limited for two operations. Texaco Canada Enterprises and Statoil Canada Limited conducted one operation each. Detailed well summaries can be found in Appendix C. Basin

Jeanne d’Arc

Operator Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Mobil Oil Canada Limited Amoco Canada Petroleum Company Limited Mobil Oil Canada Limited Chevron Standard Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Mobil Oil Canada Limited Husky Oil Operations Limited Petro-Canada Incorporated Husky Oil Operations Limited Husky Oil Operations Limited Petro-Canada Incorporated Husky Oil Operations Limited Texaco Canada Enterprises Limited Petro-Canada Incorporated Petro-Canada Incorporated Chevron Canada Resources Limited Husky Oil Operations Limited Petro-Canada Incorporated Husky Oil Operations Limited Statoil Canada Limited

Well Name

Date Spudded

Murre G-67

1971

Cormorant N-83

1972

Adolphus 2K-41

1972

Egret K-36

1973

Flying Foam I-13 Hibernia P-15 Ben Nevis I-45 South Tempest G-88 Hebron I-13 Hibernia K-18 West Flying Foam L-23 Rankin M-36 White Rose N-22 Terra Nova K-18 Conquest K-09 North Ben Nevis P-93 North Trinity H-71 Fortune G-57 South Merasheen K-55 King's Cove A-26 Brent's Cove I-30 Hebron M-04 North Amethyst K-15 Ballicatters M-96 Searcher C-87 Federation K-87

1973 1979 1980 1980 1981 1981 1981 1983 1984 1984 1984 1984 1985 1986 1988 1990 1999 2000 2006 2009 2012 2013

Table 3-5: Jeanne d’Arc Area Wells by Operating Company

58

Drilling Performance Review – Offshore Newfoundland and Labrador Murre G-67 was the first well drilled in the Jeanne d’Arc basin in 1971 while the most recent well reviewed was Federation K-87 which was drilled in the summer of 2013. All of the wells reviewed were considered shallow water wells with a 101 meters average water depth. The water depths ranged from 64.6 meters to 167.0 meters. Total drilling depths ranged from 1874.0 meters to 5282.2 meters with an average of 3993.4 for all wells (Figure 3-24). JEANNE D'ARC AREA - WATER AND TOTAL DEPTH PER WELL 0.0

1000.0

2000.0

3000.0

4000.0

5000.0

6000.0

Murre G-67 Cormorant N-83 Adolphus 2K-41 Egret K-36 Flying Foam I-13 Hibernia P-15 Ben Nevis I-45 South Tempest G-88 Hebron I-13 Hibernia K-18 West Flying Foam L-23 Rankin M-36 White Rose N-22 Terra Nova K-18 Conquest K-09 North Ben Nevis P-93 North Trinity H-71 Fortune G-57 South Merasheen K-55 King's Cove A-26 Brent's Cove I-30 Hebron M-04 North Amethyst K-15 Ballicatters M-96 Searcher C-87 Federation K-87 Water Depth (m)

Total Depth MD (m)

Figure 3-24: Jeanne d’Arc Area Water and Total Depth per Well

59


3.3.2 Drilling Rigs Used in the Jeanne d’Arc Area There was one drillship, 13 semi-submersible rigs and one jackup rig used during operations of the 26 wells in the Jeanne d’Arc area. Rig Type Drillships

Semi-Submersibles

Jackups

Rig Name Glomar Atlantic Sedco I Sedco J Zapata Ugland Sedco 706 Ocean Ranger Sedco 710 SDS Vinland Bow Drill 2 Maersk Vinlander Bow Drill 3 Glomar Grand Banks Henry Goodrich West Aquarius Rowan Gorilla VI

Year Built 1978 1970 1972 1974 1976 1976 1982 1982 1983 1983 1984 1984 1985 2009 2000

Table 3-6: Jeanne d’Arc Area Drilling Rigs Used

3.3.3 Time Breakdown for Wells in the Jeanne d’Arc Area The total time for each well is displayed in Figure 3-25. North Amethyst K-15 was the shortest operation with 27.0 days on the well and North Ben Nevis P-93 was the longest operation taking 289.4 days. The average for all wells was 145.3 days and there were nine wells which had operations that were more than 200 days. Overall, the total time spent on the 26 Jeanne d’Arc area wells studied was 3777.4 days. Drilling time accounted for 22 percent of this time while other rig operations and data acquisition made up 39 and 15 percent respectively. Data acquisition time was higher in this area due to the number of discoveries. Non-productive time was 11 percent of all time while weather caused delays accounting for four percent and ice caused delays of nine percent of the total time of all wells (Figure 3-26). Meters drilled per day is presented in Figure 3-27 and provides a reference of productivity per well. The North Amethyst K-15 well was the most productive with a total of 89.0 meters drilled per day. The least productive well was Hibernia P-15 with 5.6 meters drilled per day. The average productivity for all wells was 33.5 meters per day. Productivity was affected by non-productive time and weather delays and, as shown in Figure 3-28, these delays could add significant time to regular operations. For example, Conquest K-09 spent 142.9 days in non-productive delays.

60

Drilling Performance Review – Offshore Newfoundland and Labrador JEANNE D'ARC AREA - TOTAL TIME ON THE WELL DAYS 0.0

50.0

100.0

150.0

200.0

250.0

Murre G-67 Cormorant N-83 Adolphus 2K-41 Egret K-36 Flying Foam I-13 Hibernia P-15 Ben Nevis I-45 South Tempest G-88 Hebron I-13 Hibernia K-18 West Flying Foam L-23 Rankin M-36 White Rose N-22 Terra Nova K-18 Conquest K-09 North Ben Nevis P-93 North Trinity H-71 Fortune G-57 South Merasheen K-55 King's Cove A-26 Brent's Cove I-30 Hebron M-04 North Amethyst K-15 Ballicatters M-96 Searcher C-87 Federation K-87

300.0

350.0


Figure 3-25: Jeanne d’Arc Area Total Time on the Well

JEANNE D’ARC AREA -TIME DISTRIBUTION OF ALL WELLS Drilling 22% Other Rig Operations 39%

Data Acquisition 15%

Wait on Ice 9%

Wait on Weather 4%

Non-Productive Time 11%

Figure 3-26: Jeanne d’Arc Area Time Distribution of all Wells

61


JEANNE D’ARC AREA - METERS PER DAY OF WELL 0.0

10.0

20.0

30.0


40.0

METERS 50.0

60.0

70.0

80.0

90.0

100.0


Figure 3-27: Jeanne d’Arc Area Meters per day of Well

62


JEANNE D'ARC AREA - TIME DISTRIBUTION OF WELLS DAYS 0.0

50.0

100.0

150.0

200.0

250.0

300.0

350.0

Murre G-67 Cormorant N-83 Adolphus 2K-41 Egret K-36 Flying Foam I-13 Hibernia P-15 Ben Nevis I-45 South Tempest G-88 Hebron I-13 Hibernia K-18 West Flying Foam L-23 Rankin M-36 White Rose N-22 Terra Nova K-18 Conquest K-09 North Ben Nevis P-93 North Trinity H-71 Fortune G-57 South Merasheen K-55 King's Cove A-26 Brent's Cove I-30 Hebron M-04 North Amethyst K-15 Ballicatters M-96 Searcher C-87 Federation K-87 Drilling

Data Acquisition


Non-Productive Time

Wait on Weather

Figure 3-28: Jeanne d’Arc Area Time Distribution of Wells

63


3.3.4 Drilling Time in the Jeanne d’Arc Area The drilling time for the Jeanne d’Arc area wells varied from 2.5 days during Federation K-87 to 70.3 days during North Ben Nevis P-93. The average for all wells was 31.6 days of drill time (Figure 3-29). JEANNE D’ARC AREA - TOTAL DRILLING TIME PER WELL DAYS 0.0

10.0

20.0

30.0


40.0

50.0

60.0

70.0

80.0


Figure 3-29: Jeanne d’Arc Area Total Drilling Time per Well

64


3.3.5 Rate of Penetration during Drilling Time The average rate of penetration for wells in the Jeanne d’Arc area was 7.4 meters per hour. The rates ranged from 3.0 meters per hour during White Rose N-22 to 31.5 meters per hour during North Amethyst K-15 (Figure 3-30). The wells penetrated formations of Tertiary, Cretaceous and Jurassic age. JEANNE D’ARC AREA - AVERAGE RATE OF PENETRATION PER WELL DAYS 0.0

5.0

10.0

15.0


20.0

25.0

30.0

35.0


Figure 3-30: Jeanne d’Arc Area Average Rate of Penetration per Well

65


3.3.6 Non-Productive Time Experienced in the Jeanne d’Arc Area Non-productive time for the Jeanne d’Arc area ranged from 0.7 days to 142.8 days with an average of 28.9 days for all wells (Figure 3-31). Of the 26 wells reviewed, 14 had less than 20 days in non-productive time and as displayed in Figure 3-32, non-productive time was predominantly caused by wait on ice and rig equipment repairs.

JEANNE D’ARC AREA - TOTAL NON-PRODUCTIVE TIME PER WELL DAYS 0.0

20.0

40.0

60.0

80.0


100.0

120.0

140.0

160.0


Figure 3-31: Jeanne d’Arc Area Total Non-Productive Time per Well

66


JEANNE D'ARC AREA - NON-PRODUCTIVE TIME BREAKDOWN Subsea Equipment 5%

Casing/Cementing 4%

Well Control 2%

Data Acquisition 5% Wait on Ice 37%

Other 6%

Hole Stability/ Fishing 12%

Rig/Equipment 12% Wait on Weather 17%

Figure 3-32: Jeanne d’Arc Area Non-Productive Time Breakdown

67


3.3.7 Wait on Ice Delays in the Jeanne d’Arc Area As displayed in Figure 3-33, ice was a problem for eight of the 26 wells reviewed. The delay ranged from 8.5 days during Hebron M-04 to 104 days during Conquest K-09. JEANNE D’ARC AREA - WAIT ON ICE TIME 0.0

20.0


40.0

DAYS 60.0

80.0

100.0

120.0

Minimum - 8.5 days Average - 13 days Maximum - 104 days

Figure 3-33: Jeanne d’Arc Area Wait on Ice Time

68


3.3.8 Effects of Wait on Weather in the Jeanne d’Arc Area Weather delays accounted for 151 days of well time for all wells reviewed. This ranged from 0.4 days during North Amethyst K-15 to 34.5 days during Searcher C-87. The average for all wells was 13 days (Figure 3-34).

JEANNE D’ARC AREA - WAIT ON WEATHER TIME DAYS 0.0

5.0

10.0

15.0

20.0


25.0

30.0

35.0

40.0


Figure 3-34: Jeanne d’Arc Area Wait on Weather Time

3.3.9 Drilling Fluids Used in the Jeanne d’Arc Area Water based drilling muds were used for 20 of the 26 wells reviewed in the Jeanne d’Arc area. The weights used ranged from 1020 to 2070 kg/m3. Synthetic based drilling muds with weights ranging from 1030 to 2109 kg/m3 were used for five of the Jeanne d’Arc wells.

69


3.3.10 Status of the Jeanne d’Arc Wells Of the wells reviewed, ten were classified as oil shows or oil wells and there are currently three major producing projects (Hibernia, Terra Nova and White Rose) with one more currently under construction (Hebron).

3.3.11 Jeanne d’Arc Summary Based on the area analysis completed, one can predict an average well in the Jeanne d’Arc area drilled with a drilling rig of a first to third generation as having the following average characteristics: · · · · · ·

Water Depth = 101.1 meters Drilling Depth = 3993.4 meters Well time = 145 days including 29 days of non-productive time Wait on Ice Time = 13 days Wait on Weather Time = 6 days Total Drilling Time = 34 days


70


3.4 South Newfoundland – Area Analysis The South Newfoundland area is located south of the island of Newfoundland and is composed of both the Southern Newfoundland and South Eastern Newfoundland land tenure regions as classified by the CNLOPB. This area has wells that have been drilled in six sedimentary basins – Carson-Bonnition, Horseshoe, Laurentian, Salar, South Whale and Whale. It also includes wells drilled in the Avalon Uplift area which is an interbasinal shelf region in South Newfoundland.

Figure 3-35: South Newfoundland Area Boundaries

71


3.4.1 Overview of Wells Reviewed in South Newfoundland Area Basin Avalon Uplift

Carson

Horseshoe Laurentian

South Whale

Whale

Operator Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Mobil Oil Canada Limited Amoco Canada Petroleum Company Limited Canterra Energy Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited ConocoPhillips Canada Pan American Petroleum Corporation Amoco Canada Petroleum Company Limited Elf Oil Exploration and Production Canada Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Elf Oil Exploration and Production Canada Limited Northcor Energy Husky Oil Operations Limited Pan American Petroleum Corporation Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited Amoco Canada Petroleum Company Limited

Well Name Jaeger A-49 Twillick G-49 Osprey G-84 Bonnition H-32 Skua E-41 St. George J-55 Bittern M-62 Spoonbill C-30 East Wolverine G-37 Tors Cove D-52 Puffin B-90

Year Spudded 1972 1974 1973 1973 1974 1986 1972 1973 2009 1966 1971

Hermine E-94

1971

Petrel A-62 Shearwater J-20 Kittiwake P-11 Heron H-73 Gull F-72 Tern A-68 Mallard M-45 Heron J-72 Brant P-87

1972 1972 1972 1972 1972 1973 1973 1973 1973 1973

Emerillon C-56 Narwhal F-99 Lewis Hill G-85 Grand Falls H-09 Eider M-75 Gannet O-54 Merganser I-60 Razorbill F-54 Sandpiper J-77 Sandpiper 2J-77 Pelican J-49 Coot K-56 Carey J-34 Phalarope P-62

1987 2005 1966 1971 1971 1972 1973 1973 1973 1973 1973 1974 1974

Table 3-7: Summary of Well Operators per Basin in South Newfoundland Area

72


Between June 1966 until April 2016, 37 exploration wells have been drilled in the South Newfoundland area (Canada - Newfoundland and Labrador Offshore Petroleum Board, 2016). Of these wells, 35 have been reviewed in this study. Murre G-67 and Cormorant N-83 are classified in South Eastern Newfoundland Area but were drilled on the Jeanne d’Arc basin thus, for the purpose of this study, these two wells are included in the Jeanne d’Arc area. The other 35 wells analyzed were drilled across five basins in the region. A total of eight operators have conducted drilling operations in the South Newfoundland area. Pan American Petroleum Corporation operated the first two wells drilled in Newfoundland and Labrador. Amoco Canada Petroleum Company Limited operated 26 wells while Elf Oil Exploration and Production Canada Limited operated two wells. Mobil Oil Canada Limited, Canterra Energy Limited, Northcor Energy, Husky Oil Operations Limited and ConocoPhillips Canada each operated one well in this region. SOUTH NEWFOUNDLAND AREA - WATER AND TOTAL DEPTH PER WELL 0.0

1000.0

2000.0

METRES 3000.0 4000.0

5000.0

Tors Cove D-52 Grand Falls H-09 Eider M-75 Gannet O-54 Puffin B-90 Hermine E-94 Petrel A-62 Shearwater J-20 Bittern M-62 Kittiwake P-11 Heron H-73 Jaeger A-49 Gull F-72 Merganser I-60 Tern A-68 Mallard M-45 Razorbill F-54 Sandpiper J-77 Sandpiper 2J-77 Heron J-72 Osprey G-84 Spoonbill C-30 Pelican J-49 Brant P-87 Bonnition H-32 Emerillon C-56 Coot K-56 Twillick G-49 Carey J-34 Skua E-41 Phalarope P-62 St. George J-55 Narwhal F-99 Lewis Hill G-85 East Wolverine G-37

6000.0

7000.0

Water Depth (m) Total Depth MD (m)

Figure 3-36: Water Depth and Total Depth per each South Newfoundland area well

73


The South Newfoundland area consists of both deep and shallow water depths, however 94 percent of the South Newfoundland wells reviewed were drilled in shallow water of 120 meters or less. Tors Cove D-52, drilled on the South Whale basin was not only the first well drilled in the area but also the first well drilled in offshore Newfoundland and Labrador. The most recent well reviewed was the East Wolverine G-37 which was drilled in 2009 and was the first well drilled in the Laurentian basin. East Wolverine G-37 and Narwhal F-99, drilled in the South Whale basin, were the only deepwater wells drilled in South Newfoundland. The water depths for all wells ranged from 57.9 meters to 1890.6 meters with an average water of 183.0 for all wells. Additionally, total drilling depths ranged from 803.1 meters to 6857.0 meters with an average of 3054.8 for all wells as seen in Figure 3-36. Detailed well summaries can be found in Appendix D.

3.4.2 Drilling Rigs Used Offshore South Newfoundland There were two drillships, five semi-submersible rigs and one jackup rig used during the operations of the 35 wells in South Newfoundland. The Rowan Gorilla VI jackup rig, used during Lewis Hill G-85, was the first and only jackup used Offshore Newfoundland and Labrador. Rig Type

Rig Name Glomar Sirte Stena Carron Sedneth 1 Sedco H Sedco I SDS Vinland Sedco 710 Rowan Gorilla VI

Drillships

Semi-Submersibles

Jackups

Year Built 1965 2008 1967 1970 1970 1982 1982 2000

Table 3-8: Summary of Drilling Rigs used during South Newfoundland Area Wells

The Sedco I and Sedneth 1, semi-submersible rigs, were most frequently used in the South Newfoundland area as they operated on 27 of the 35 wells reviewed. The rigs were similar as both were classified as first generation, semi-submersibles with mooring capabilities. When compared, the Sedco I had an overall higher average rate of penetration but was slower than Sedneth 1 in the Tertiary, Jurassic and salt intervals (Table 3-9).

RIG NAME SEDCO I SEDNETH 1

Avg ROP while Avg ROP Avg ROP Avg ROP - Avg ROP - Salt drilling (m/hr) Tertiary (m/hr) Cretaceous (m/hr) Jurassic (m/hr) (m/hr) 49.2 13.3 26.6 15.6 2.5 3.2 51.3 9.3 31.2 10.4 2.9 3.7

Metres/day

Table 3-9: Comparison of Sedco I and Sedneth 1 Semi-Submersible Rigs

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3.4.3 Time Breakdown for Wells Offshore South Newfoundland The total time for each well is displayed in Figure 3-37. Jaeger A-49 was the shortest operation spending only 12.6 days on the well while the East Wolverine G-37 deepwater well was the longest operation taking 157.9 days. Notably, Jaeger A-49 only drilled to 938.5 meters while East Wolverine G-37 reached 6857 meters. The average for all wells was 63.7 days and there were 12 wells which had operations that were less than 50 days.

SOUTH NEWFOUNDLAND AREA - TOTAL TIME ON THE WELL DAYS 0.0

20.0

40.0

60.0

80.0


100.0

120.0

140.0

160.0

180.0


Figure 3-37: Total Time of South Newfoundland Area Wells

75


The total time spent on the 35 South Newfoundland area wells was 2231 days. Drilling accounted for 26 percent of this time while other rig operations and data acquisition made up 47 and 6 percent respectively. The remaining 21 percent of time was due to non-productive time which included weather delays accounting for 10 percent of the total time of all wells (Figure 3-38).

SOUTH NEWFOUNDLAND AREA - TIME BREAKDOWN OF WELLS

Drilling 26%


Data Acquisition 6%

Non- Productive Time 9% Wait on Ice 1%

Wait on Weather 11%

Figure 3-38: Time Breakdown of South Newfoundland Area Wells

76


With regards to time on the well, while some wells appear to have taken a significant amount of time, the total depth reached has to be considered in order to establish productivity. When reviewing the productivity of the well, a comparison of meters/day is shown in Figure 3-39. The Osprey G-84 well was the most productive with a total of 87.3 meters drilled per day of well while the least productive well was Sandpiper J-77 with 15.3 meters drilled per day of well. The average productivity for all wells was 49.5 meters per day. As stated above, non-productive time including weather and ice delays accounted for 21 percent of all well time, causing well operations to be significantly longer than expected, in these cases (Figure 3-40).

SOUTH NEWFOUNDLAND AREA - METERS PER DAY OF WELL METERS 0.0 Tors Cove D-52 Grand Falls H-09 Eider M-75 Gannet O-54 Puffin B-90 Hermine E-94 Petrel A-62 Shearwater J-20 Bittern M-62 Kittiwake P-11 Heron H-73 Jaeger A-49 Gull F-72 Merganser I-60 Tern A-68 Mallard M-45 Razorbill F-54 Sandpiper J-77 Sandpiper 2J-77 Heron J-72 Osprey G-84 Spoonbill C-30 Pelican J-49 Brant P-87 Bonnition H-32 Emerillon C-56 Coot K-56 Twillick G-49 Carey J-34 Skua E-41 Phalarope P-62 St. George J-55 Narwhal F-99 Lewis Hill G-85 East Wolverine G-37

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0


Figure 3-39: Average Meters per day during operations of South Newfoundland Area Wells

77


These delays varied per well with some wells such as East Wolverine G-37 spending 70.9 of 157.9 days in non-productive time and weather delays, but with other wells such as Spoonbill C-30 having less than a day of delays during operations.

SOUTH NEWFOUNDLAND AREA - TIME DISTRIBUTION OF WELLS 0.0

20.0

40.0

60.0

80.0

DAYS

100.0

120.0

140.0

160.0

180.0

Tors Cove D-52 Grand Falls H-09 Eider M-75 Gannet O-54 Puffin B-90 Hermine E-94 Petrel A-62 Shearwater J-20 Bittern M-62 Kittiwake P-11 Heron H-73 Jaeger A-49 Gull F-72 Merganser I-60 Tern A-68 Mallard M-45 Razorbill F-54 Sandpiper J-77 Sandpiper 2J-77 Heron J-72 Osprey G-84 Spoonbill C-30 Pelican J-49 Brant P-87 Bonnition H-32 Emerillon C-56 Coot K-56 Twillick G-49 Carey J-34 Skua E-41 Phalarope P-62 St. George J-55 Narwhal F-99 Lewis Hill G-85 East Wolverine G-37 Drilling

Data Acquisition


Non-Productive Time

Wait on Weather

Figure 3-40: South Newfoundland Time Distribution of Wells

78


3.4.4 Drilling Time Offshore South Newfoundland The drilling time for the South Newfoundland Area wells varied from 1 day to 48.5 days. Both Jaeger A49 and Sandpiper J-77 had just one day of drilling time while Bittern M-62 had the longest drilling time spending 48.5 days drilling. The average for all wells was 16.9 days of drill time (Figure 3-41).

SOUTH NEWFOUNDLAND AREA - TOTAL DRILLING TIME PER WELL 0.0

10.0

20.0

DAYS 30.0


40.0

50.0

60.0


Figure 3-41: South Newfoundland Area Total Drilling Time per Well

79


3.4.5 Rate of Penetration during Drilling Time The average rate of penetration for all wells in the South Newfoundland Area was 11.4 meters per hour. The rates ranged from 3.8 meters per hour during Eider M-75 to 35.4 meters per hour during Jaeger A49 (Figure 3-42). The wells penetrated formations of Tertiary, Cretaceous, Jurassic and Paleozoic ages. SOUTH NEWFOUNDLAND AREA - AVERAGE RATE OF PENETRATION PER WELL 0.0

5.0

10.0

15.0

METRES PER HOUR 20.0 25.0


30.0

35.0

40.0


Figure 3-42: South Newfoundland Area Average Rate of Penetration per Well

80


3.4.6 Non-Productive Time Experienced Offshore South Newfoundland Non-productive time for the South Newfoundland area ranged from 0.1 days to 41.5 days with an average of 6.2 days for all wells (Figure 3-43). Of the 35 wells reviewed, 31 had less than ten days in nonproductive time. As displayed in Figure 3-44, non-productive time was predominantly caused by rig and equipment repairs, fishing operations and subsea equipment repairs.

SOUTH NEWFOUNDLAND AREA - NON-PRODUCTIVE TIME DELAY PER WELL DAYS 0.0

5.0

10.0

15.0

20.0

25.0

Tors Cove D-52 Grand Falls H-09 Eider M-75 Gannet O-54 Puffin B-90 Hermine E-94 Petrel A-62 Shearwater J-20 Bittern M-62 Kittiwake P-11 Heron H-73 Jaeger A-49 Gull F-72 Merganser I-60 Tern A-68 Mallard M-45 Razorbill F-54 Sandpiper J-77 Sandpiper 2J-77 Heron J-72 Osprey G-84 Spoonbill C-30 Pelican J-49 Brant P-87 Bonnition H-32 Emerillon C-56 Coot K-56 Twillick G-49 Carey J-34 Skua E-41 Phalarope P-62 St. George J-55 Narwhal F-99 Lewis Hill G-85 East Wolverine…

30.0

35.0

40.0

45.0


Figure 3-43: South Newfoundland Area Non-Productive Time per Well

81


SOUTH NEWFOUNDLAND AREA - NON-PRODUCTIVE TIME BREAKDOWN Other 17%

Wait On Ice 11%

Rig/Equipment 29% Casing/Cementing 1%

Well Control 1% Data Acquisition 1%



Figure 3-44: South Newfoundland Area Non-Productive Time Breakdown

3.4.7 Wait on Ice Delays Offshore South Newfoundland In the South Newfoundland area, only three of the 35 wells reviewed were affected by ice delays. Sandpiper J-77 lost 13.9 days to ice delays while Razorbill F-54’s operations were delayed by 8.8 days. Osprey G-84 was also delayed for half of a day due to ice.

82


3.4.8 Effects of Wait on Weather Offshore South Newfoundland Overall, wait on weather averaged 6.8 days of well time for the South area wells. Nine wells had less than one day of wait on weather time while nine others exceeded ten days of wait on weather time. Of the nine wells that exceeded ten days of weather delay time, six were drilled during the winter season. Notably, East Wolverine G-37 had the highest wait on weather delay losing 29.4 operational days (Figure 3-45). SOUTH NEWFOUNDLAND AREA - WAIT ON WEATHER TIME PER WELL DAYS 0.0

5.0

10.0

15.0


20.0

25.0

30.0

35.0


Figure 3-45: South Newfoundland Area Wait on Weather per Well

83


3.4.9 Drilling Fluids Used in South Newfoundland Wells All wells in the South Newfoundland area, with the exception of East Wolverine G-37, used a water based drilling mud during operations. The mud weights ranged from 1018.5 to 1580.7 kg/m3. East Wolverine completed operations using both water and synthetic based muds with weights ranging from 1031 to 1702 kg/m3.

3.4.10 Status of the South Newfoundland Wells Drilling activity in the South Newfoundland area was most active in the 1970’s and 1980’s. Since 1987, only two wells have been drilled in this area. All South Newfoundland area wells have been plugged and abandoned.

3.4.11 South Newfoundland Summary The 35 wells reviewed were drilled across six sedimentary basins starting in 1966 until 2009. The drilling performance per basin drilled is shown in Figure 3-46. The wells drilled on the interbasinal high had the fastest rate of penetration at 30.8 meters per hour while the Horseshoe basin was the slowest at 6.2 meters per hour.

SOUTH NEWFOUNDLAND AREA - AVERAGE RATE OF PENETRATION BY BASIN 0.0

5.0

10.0

METRES PER HOUR 15.0 20.0

25.0

30.0

35.0

INTERBASINAL HIGH

CARSON BASIN

HORSESHOE BASIN

LAURENTIAN BASIN

SOUTH WHALE BASIN

WHALE BASIN

Figure 3-46: South Newfoundland Area Average Rate of Penetration by Basin

84


Based on the regional analysis completed, one can predict an average well in the South Newfoundland area drilled with a drilling rig of a first to third generation as having the following average characteristics: · · · · · ·

Water Depth = 183 meters Drilling Depth = 3055 meters Well Time = 64 days including 6 days of non-productive time Wait on Ice Time = 1 days Wait on Weather Time = 6.8 days Total Drilling Time = 17 days


85


4.0 Rig Availability and Performance 4.1 Global Rig Use and Availability In order to understand the global offshore rig availability, three public data sets were considered including IHS Petrodata (IHS Incorporated, 2016), Baker Hughes rig count data (Baker Hughes Incorporated, 2016) and information as published by rig owners on their public websites. According to recent IHS Petrodata from May 2016, there are over 830 Mobile Offshore Drilling Units (MODU) worldwide and only 507 of these are currently under contract (IHS Incorporated, 2016). In addition, Baker Hughes publishes an ‘active’ offshore rig count by region and for April 2016, they counted 246 rigs operating on a global basis (Baker Hughes Incorporated, 2016). This data set only includes ‘active’ rigs which are defined as those that are currently operating but does not include rigs that are waiting or in transit. To understand offshore rig activity on a global level, the Baker Hughes ‘active’ rigs list has been compiled for seven regions: Europe, Middle East, Africa, Latin America, AsiaPacific, Canada and the United States as seen below in Figure 4-1.

Global Active Offshore Rig Count 1982 - 2016 By Region 250

Count

200 150 100 50

1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

0

Year / Regions Asia Pacific

Middle East

Africa

Europe

Latin America

US

Canada

Figure 4-1: Global Active Offshore Rig Count (Baker Hughes Incorporated, 2016)

This active rig count was compiled from various Baker Hughes rig count reports relying on both current and historic data to compile a detailed rig count for global regions from 1982 to present (Baker Hughes Incorporated, 2016). Historical data for North America (Canada and the United States) from 1970 onwards was available through Baker Hughes reports as well. From an overview perspective the United States was most active in the early 1980’s, with a decline reflected by a growth in Asia Pacific in the more recent years. The 1980’s saw a peak of activity offshore 86


in Europe and specifically the North Sea. The North Sea by comparison seems to be a more consistent and stable region. Despite a drop off mirrored across other regions like the US and Canada, overall decline was less than those regions and the European market seemed to maintain a consistent level of activity. The recent downturn in the market is evidenced in all three regions with the North Sea and the United States seeing significant decline in active working rigs. In order to further understand global rig use, each region is briefly summarized below. Date Asia Pacific Middle East Africa Europe Latin America USA 1982 93 66 54 98 87 215 1983 88 63 43 77 82 173 1984 89 54 33 93 77 187 1985 88 45 32 106 83 188 1986 69 30 18 76 85 93 1987 58 19 24 70 76 89 1988 70 21 29 91 68 114 1989 68 22 24 75 61 97 1990 76 19 23 77 63 108 1991 65 21 26 71 64 81 1992 59 28 20 66 63 52 1993 63 28 20 47 66 82 1994 64 25 19 43 60 102 1995 58 25 24 47 57 101 1996 59 30 34 56 61 108 1997 64 32 32 60 67 122 1998 75 30 30 53 62 123 1999 63 22 16 41 39 106 2000 57 21 20 47 41 140 2001 60 32 23 58 47 153 2002 66 36 24 54 46 113 2003 74 31 18 48 56 108 2004 87 34 14 41 66 97 2005 109 33 14 45 64 93 2006 109 29 16 52 63 90 2007 117 32 15 50 72 73 2008 118 34 15 49 79 65 2009 107 32 13 47 75 44 2010 120 35 26 49 76 31 2011 106 39 27 48 86 32 2012 97 47 32 46 82 47 2013 103 44 36 50 86 56 2014 116 46 40 50 74 57 2015 93 50 32 46 62 35 2016 74 54 20 36 36 25 Table 4-1: Number of Drilling Rigs used per Year per Region (Baker Hughes Incorporated, 2016)

Canada 6 11 14 10 4 2 2 1 0 1 1 1 0 1 1 1 4 5 5 5 5 4 4 4 4 3 1 1 2 1 1 2 2 2 1

87


Asia Pacific has consistently had an active rig count above 60. From 2000 onwards, average active rigs peaked with over 100 rigs operating in this area. However, with the challenging market conditions this number has dropped and has continued to decline, but activity remains high and is still trending above previous lows. Drawing comparisons and making analysis on this would involve examining a massive area with a multitude of countries with competing interests. The market is dominated by State owned and private companies, and a company active in China may not be active in Singapore regions. Current rig count in Asia Pacific sits at 74. Despite a decline in many other regions, the Middle East is displaying a steady growth in terms of rig use. As per Figure 4-1, rig count has been progressively increasing since 2009 and 2016 data shows 54 active rigs. As the Middle East is dominated by state run companies and an ever evolving geopolitical climate, comparisons to other regions can be more difficult. Active rig count in Africa was highest in 1982. Since this peak, from 1984 onwards active rig count has hovered beneath 30, with some years of sustained growth followed by a proportional decline. Africa has also experienced a decline following the price collapse in 2015. It still remains higher than historic lows at the current time. As for Europe, data tracked by Baker Hughes comprises all of Europe, and separate information is available for the North Sea. The North Sea rig count dominates Europe in general and largely steers this data set. Significant early activity in Europe has tapered off and has remained fairly balanced since 1992 onwards. The current rig count active in Europe is noted as 36. Latin America experienced a prolonged extended decline of active rigs from 1986 until 1999. From 1998 to 1999 the average active rig count dropped by more than 20. Then, a slow recovery began until peaking in 2013. Decline in the Latin America market began again in 2013, earlier than in other regions and has continued since then with a decline of almost 50 rigs since 2013. The current rig count in Latin America stands at 36.

US OFFSHORE RIG COUNT: 1970-2016 250 200 150 100 50 0

Figure 4-2: United States Offshore Rig Count from 1970 through 2016 (Baker Hughes Incorporated, 2016)

88


Figure 4-2 tracks offshore activity for the United States. Data for the United States and Canada was available from 1970 onwards. The United States data shows that activity peaked in 1981, with sharp drop-offs each year between 1981 and 1985 and 1985 and 1988. This aligns with the drop oil prices and over supply that was affecting Canada at that time as well. A downward trend from 2001 to 2011 was followed by some recovery of rig activity in 2012. However, the fall in oil price has caused a drop in rig count in 2015 and 2016.

CANADA OFFSHORE RIG COUNT: 1970-2016 16 14 12

COUNT

10 8 6 4 2 0

Figure 4-3: Canada Offshore Rig Count from 1970 through 2016 (Baker Hughes Incorporated, 2016)

The annual average rig count for offshore Canada peaked in 1985 with an average of 14 active rigs (Figure 4-3). Activity follows similar trends to the US albeit at much lower levels. It may be noted that the Canadian government, under its National Energy Plan (NEP), introduced federal subsidies to offset drilling costs by as much as 80 percent in 1981. This coupled with increasing oil prices and the Hibernia discovery in 1979 spurred the peak in drilling activity experienced until 1986. In 1986, with the onset of lower oil prices, over supply, jurisdictional negotiations and the end of the incentive program, activity slowed. This decline was followed by a significant jump in activity following first production at Hibernia in 1997. From 2007 onwards, this has declined again and rig count has been relatively low. As well, data regarding rig use, availability and capability was compiled for all major rig owners based on information published on rig owners’ websites and recent fleet status reports as of April 2016. Although this information is useful, it is limited to the opinions of the rig owners and not necessarily accurate with respect to rig capability when compared to an engineering study conducted by a certifying authority. Rig owners and companies with limited experience operating in either the US, North Sea or Canada were not compiled for conciseness. From the analysis, there are 420 rigs that could possibly operate in Newfoundland based on a 100 meter water depth requirement. Of this, 112 (27 percent) were drillships, 140 (33 percent) were semi- submersibles and 168 (40 percent) were jackups as per Table 4-2. 89


Of the total number of rigs, 198 are classed as deepwater or ultra-deepwater and these are all either drillships or semi-submersibles. Of the total number of jackups, 88 are classed as high specification which is similar to the Rowan Gorilla VI which was utilized in offshore Newfoundland and Labrador by Husky Energy Incorporated. The owner of the jackup, Rowan Companies currently has 19 jackups of similar specifications while Seadrill Limited has 14, with more under construction. Company

Jackup

Drillship

Transocean Stena Drilling Songa Offshore Seadrill Saga Drilling

10 0 0 32 2

21 4 0 15 0

SemiSub 29 4 7 14 0

Rowan Companies

27

4

0

31

Pacific Drilling Odfjell Ocean Rig UDW

0 0 0

7 5 12

0 5 2

7 10 14

Noble Drilling

10

8

8

26

(Noble Corporation, 2016)

Maersk Drilling

8

4

4

16

(Maersk Drilling, 2016)

PT Apexindo Pratama Duta Tbk

2

0

0

2

(PT Apexindo Pratama Duta Tbk, 2016)

Atwood Oceanics CROSCO – Integrated Drilling and Well Services

5

4

4

13

(Atwood Oceanics, 2016)

1

0

1

2

(CROSCO, 2016)

Diamond Offshore Drilling

6

4

23

33

Fred. Olsen Drilling /Dolphin Drilling

0

2

8

10

Ensco Plc Hercules Offshore KCA Deutag Paragon Offshore

17 5 1 23

10 0 0 4

17 0 0 2

44 5 1 29

China Oilfield Services

0

0

4

4

Jasper Offshore Aban Offshore Awilco Drilling Saipem

0 12 0 4

1 2 0 2

0 0 2 6

1 14 2 12

Vantage Drilling International

4

3

0

7

Total

169

112

140

421

Total

Reference

60 8 7 61 2

(Transocean Ltd., 2016) (Stena Drilling , 2016) (Songa Offshore, 2016) (Seadrill , 2016) (Saga Drilling , 2015) (Rowan Companies, 2016) (Pacific Drilling, 2016) (Odfjell Drilling, 2016) (Ocean Rig, 2016)

(Diamond Offshore, 2016) (Fred. Olsen Energy , 2016) (Ensoc plc, 2016) (Hercules Offshore, 2016) (KCA Deutag, 2016) (Paragon Offshore, 2016) (China Oil Services Limited, 2016) (Jasper Offshore, 2016) (Aban Offshore, 2016) (Awilco Drilling, 2016) (Saipem, 2016) (Vantage Drilling International, 2016)

Table 4-2: Estimate of Drilling Rigs Capable of upgrade for Offshore Newfoundland and Labrador

90


The global tracking of MODUs by year helps us to understand that offshore drilling can be highly susceptible to trends in market demand and oil price. It is also a useful indicator for timing rig availability and cost. Typically, when rig availability increases the rig costs will decrease significantly due to a downturn market when more rigs are stacked and not on contract for use. Recently in 2016, rig rates have dropped significantly due to a weakened market for hydrocarbon exploration.

4.2 Rig Use – Offshore Newfoundland and Labrador Over the past 50 years, drillships, semi-submersibles and jackup rigs have been used to drill exploration wells offshore Newfoundland and Labrador. Of the 112 exploration wells studied, two used jackup rigs, 32 used drillships and 78 used semi-submersible rigs. The exploration wells in the Jeanne d’Arc, South Newfoundland and Eastern Newfoundland areas were predominantly drilled with semi-submersibles, while the early Labrador wells were drilled with drillships. The exploration wells that were drilled with jackups were the North Amethyst K-15 well in the Jeanne d’Arc area and the Lewis Hill G-85 well in the South Newfoundland area. Both used the Rowan Gorilla VI, a high specification jackup which was built in 2000 (Marine Traffic, 2007 - 2016). TYPE OF RIG USED TO DRILL THE WELLS STUDIED 100 80 60 40 20 0 Jackup

Drillship

Semi-submersible

Figure 4-4: Type of Drilling Rig used in Studied Wells

91


Pictured: Rowan Gorilla VI – a high specification jackup (Marine Traffic, 2007 - 2016)

The drillships and semi-submersibles are evaluated in generational categories based on the following classifications: Generation First Second Third Fourth Fifth Sixth Seventh

Year Built Semi-submersible 1961 - 1972 1973 - 1979 1980 - 1985 1986 - 1997 1998 - 2004 2005 - 2014 2015 onwards

Drillship 1961 - 1970 1971 - 1979 1980 - 1985 1986 - 1997 1998 - 2005 2006 - 2009 2010 onwards

Table 4-3: Drilling Rig Generation Guide (DrillingFormulas.com, 2016)

Of the 110 wells drilled with either a drillship or semi-submersible rig, 39 of the wells used first generation rigs, while 44 used second generation rigs and 17 used third generation rigs. This is driven by the fact that the majority of exploration wells were drilled during the 1970’s and 1980’s. However, many rigs like the Henry Goodrich, a third generation, semi-submersible, are still drilling wells in offshore Newfoundland and Labrador as of 2016. As for the newer generation rigs, 10 of the wells reviewed used fifth or sixth generation rigs. This includes Ocean Rig’s Eirik Raude and Seadrill’s West Aquarius, both semi-submersible rigs. As well, Stena’s sixth generation drillship, Stena Carron, has been used to drill three deepwater wells in the Eastern Newfoundland and South Newfoundland areas. 92


As stated in Section 2, there were 33 drilling rigs used to drill the exploration wells reviewed for the study. Overall for the wells drilled offshore Newfoundland and Labrador, there were 42 drilling rigs used. The Henry Goodrich and GSF Grand Banks (formally known as Glomar Grand Banks, Maersk Vinlander, Bow Drill 3) have completed the most operations each drilling 66 wells. As for the exploration wells reviewed, the Sedco I semi-submersible was used most frequently, drilling 23 of the 112 wells. During these wells it averaged a rate of penetration of 6.2 meters per hour of drilling. Operationally, 17 percent of the Sedco I’s non-productive time during these wells was due to rig or equipment repairs. The GSF Grand Banks drilled six of the 112 wells and averaged a rate of penetration of 4.4 meters per hour of drilling. As well, 10 percent of the GSF Grand Bank’s nonproductive time was due to rig or equipment repairs. The rigs that averaged the highest rate of penetration were the Rowan Gorilla VI jackup and the West Aquarius semi-submersible. They averaged 22.8 and 21.3 meters per hour respectively. The Zapata Ugland semi-submersible had the highest percentage of rig and equipment related non-productive time Out of 3239 hours of non-productive time during 6 wells, 1538 hours or 47 percent was due to rig or equipment issues. As well, 45 percent of Eirik Raude’s non-productive time was due to rig and equipment repairs.

Pictured: Henry Goodrich – a third generation, semi-submersible rig (Monitor Systems Scotland Ltd., n.d.)

93


Pictured: West Aquarius – a sixth generation, semi-submersible rig (Seadrill, n.d.)

Pictured: Stena Carron – a sixth generation, drillship (GCaptain, 2012)

94


4.3 Rig Performance Overview – Offshore Newfoundland and Labrador Within the studied wells, semi-submersible rigs were used to drill wells with water depths ranging from 58 to 2338 meters and total depths below mudline of 683 to 5241 meters. The average ROP for semisubmersibles was 9.2 meters per hour. The average overall time to drill the wells using these rigs was 108 days. In general, semi-submersible rigs have been the predominant type of rig used to drill the exploration wells reviewed. Semi-submersible rigs perform well in offshore Newfoundland and Labrador because they have the necessary motion characteristics to allow operations to continue in high seas. They also have a greater deck space, crane coverage and larger moonpools, but may not have sufficient deck load and space to carry the entire drilling riser for a deep water well. This factor can result in delays for off-loading/back-loading riser joints in a potentially harsh environment. Drillships were used to drill wells with water depths ranging from 78 to 2602 meters and total depths below mudline of 904 to 4935 meters. The overall average rate of penetration for the drillships was 8.0 meters per hour and the total time on the wells averaged 101 days. With regards to drillships, the newer generations are dynamically positioned and considerably larger than the older generations and the additional lengths add to their stability during operations when they are able to maintain their bow into the seas. However, offshore Newfoundland and Labrador frequently experiences confused seas where a cross-swell exists. Under these situations, a drillship will need to compromise vessel heading to maintain station keeping and may be subject to higher roll and heave motions. While there is limited experience and data, jackups have performed well during operations on Newfoundland and Labrador’s shallow water wells from a drilling perspective. Drilling performance averaged 25.2 meters per hour while drilling which was higher than the performance of the semisubmersible rigs and drillships used. The wells using jackups had an average time on the well of 37 days. Additionally, jackup rigs were used to drill wells which had water depths ranging from 100 to 119 meters and total depth below mudline of 2400 to 3071 meters. A differing characteristic of the jackup rig is that it is bottom-founded and has no rig motions to deal with. However, there are some issues with regards to the viability of jackups in offshore Newfoundland and Labrador. The hard seafloor can make spudcan penetration difficult resulting in insufficient spudcan penetration to prevent seafloor scour and increased loads on the legs of the jackup. As well, jackups are highly susceptible to sea state during jacking and moving operations. Typically, seas less than two to three meters is the limit for jacking up or down. In addition, wells drilled with surface wellheads and BOPs require much longer to secure than subsea systems. This factor restricts jackups to the late summer and fall seasons when the frequency of ice incursion is low.

4.4 Rig Intake Requirements The C-NLOPB highlights the following factors need to be considered when seeking a certificate of fitness: 1. Sea States – Operators must understand the sea states along with the possibility of confused seas. This means that a rig needs to be capable of surviving a 100-year storm event with maximum wave heights as high as 28 meters. Unpredictable wave periods also need to be 95


considered as these can result in challenging rig motions and drilling conditions. Ultimately, the rig must have adequate motion characteristics in order to avoid significant and continuous downtime. There will be less downtime due to weather if the rig can operate in bigger seas. 2. Additionally, adequate secondary BOP disconnect systems must ensure emergency disconnect capabilities should issues with extreme sea states be encountered. With regards to rigs which are moored, operations must have a minimum of eight point mooring spread and if operating during the winter, depending on the results of a comprehensive mooring analysis, the rig may need a 12 point mooring spread. 3. Confused seas – Prevailing winds and waves approaching from different directions mean that rigs must have adequate thrusters for station keeping. They must also undergo a site specific riser and weak point analysis to determine if the rig can withstand site specific environmental conditions. The riser analysis is site specific because assessments vary depending on water depth, current and the riser buoyancy module configuration. In addition to the riser connected mode, it is wise to assess what happens after a disconnect. A deepwater riser would be nearly neutrally buoyant and still subject to seas, current and rig motion. There are options for how you suspend the riser. Simply disconnecting and stroking in the direct acting tensioners (DATs) is the easiest and least time-consuming, but an operator will also look at rigging up the riser handling equipment and pulling the slip joint to take the load off the tensioning ring, provided the planning process allows this decision before the weather becomes too severe. 4. High Frequency of Icebergs – Another requirement is that that rig operators must submit an ice management plan which describes how they intend to detect, monitor and react to ice encroaching their drilling area. The ice management plan will describe how the support vessels are equipped to tow/deflect ice, as well as a management system to outline the decision making procedures surrounding well disconnect and mobility time. 5. Hard Sea Floors – For jackups specifically, the hard seafloor conditions as experienced in some areas offshore Newfoundland and Labrador can make it difficult for jackups to have a stable penetration causing increased loading on the legs. 6. Water Depths – With regards to water depth, the appropriateness of using a particular rig varies based on the water depth at the specific location. The water depths which have been drilled in offshore Newfoundland and Labrador range from approximately 60 meters to 2900 meters and as stated above, deepwater drilling activity is increasing. Rigs used in deepwater are most often dynamically positioned and need riser handling capability and large storage spaces. These rigs may not be interchangeable for shallow water operations where mooring systems are preferred. 7. Isolation and Transportation – There is a high frequency of fog particularly in the spring and summer months, which can result in a need to transfer personnel via approved personnel transfer baskets and therefore, rigs need to be equipped with a motion compensated, man riding crane. The long distance from shore must also be considered as the deck space and 96


storage capability has to be sufficient for operations that could be up to 500 kilometers from shore. 8. Environmental Conditions – Rig structure and components have to be sub-zero degrees Celsius rated and based on the specific location some codes and standards require equipment rated for as low as minus 20 degrees Celsius or minus 35 degrees Celsius. As well, it is preferred that work areas such as derricks and ROV work spaces are enclosed. Winterization of systems is necessary and includes measures such as heat trace or thermal blankets on piping and using glycol mixtures for BOP operating fluid. In addition, heave compensation systems should be able to operate in subzero conditions. With research showing that approximately 420 rigs are capable of operating in waters of 100 meters or greater, it is important to acknowledge the rig requirements set forth by the C-NLOPB. As part of this requirement, the rig owner is required to obtain a certificate of fitness from an approved certifying authority and this certificate ensures that the rig meets the regulations and standards set forth by the board. It is important to note that while every rig may not meet these requirements, many are capable of being upgraded to meet the standards to operate in offshore Newfoundland and Labrador. For a more detailed listing of regulatory requirements for rig intake into the jurisdiction, please visit www.cnlopb.ca or contact the regulator directly.

97


5.0 References Aban Offshore. (2016, April). Retrieved from http://www.abanoffshore.com/rig.html Amoco Canada Petroleum Company Limited . (1972). Well History Report - Eider M-75. Amoco Canada Petroleum Company Limited. (1972). Well History Report - Gannet O-54. Amoco Canada Petroleum Company Limited. (1972). Well History Report - Murre G-67. Amoco Canada Petroleum Company Limited. (1972). Well History Report - Petrel A-62. Amoco Canada Petroleum Company Limited. (1972). Well History Report - Shearwater J-20. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Bittern M-62. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Cormorant N-83. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Egret K-36. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Gull F-72. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Heron H-73. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Jaeger A-49. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Kittiwake P-11. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Mallard M-45. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Merganser I-60. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Puffin B-90. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Razorbill F-54. Amoco Canada Petroleum Company Limited. (1973). Well History Report - Tern A-68. Amoco Canada Petroleum Company Limited. (1974). Well Histort Report - Osprey G-84. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Brant P-87. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Carey J-34. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Coot K-56. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Heron J-72. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Pelican J-49. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Sandpiper 2J-77. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Sandpiper J-77. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Spoonbill C-30. Amoco Canada Petroleum Company Limited. (1974). Well History Report - Twillick G-49. Amoco Canada Petroleum Company Limited. (1975). Well History Report - Phalarope P-62. Amoco Canada Petroleum Company Limited. (1975). Well History Report - Skua E-41. Anadrill/Schlumberger. (1988). End of Well Report - Narwhal F-99. Atwood Oceanics. (2016, April). Retrieved from http://www.atwd.com/our-fleet/ Awilco Drilling. (2016, April). Retrieved from http://www.awilcodrilling.com/4609-Rig-Fleet Baker Hughes Incorporated. (2016). Rig Count FAQs. Retrieved from http://phx.corporateir.net/phoenix.zhtml?c=79687&p=irol-rigcountsfaqs BP Exploration Canada Limited. (1976). Well History - Abandonment Report - Bonavista C-99. BP Exploration Canada Limited. (1977). Well History Report - Indian Harbour M-52. BP Exploration Canada Limited. (1979). Well History - Abandonment Report - Hare Bay E-21. BP Resources Canada Limited. (1985). Well History Report - Baie Verte J-57. Canada - Newfoundland and Labrador Offshore Petroleum Board. (2016, April 30). Schedule of Well Summary - April 2016. St. John's, NL, Canada. 98


Canterra Energy Limited. (1983). Final Well Report - South Hopedale L-39. Canterra PCI. (1986). Well History Report - St. George J-55. Chevron Canada Limited. (2009). End of Well Report - Great Barasway F-66. Chevron Canada Limited. (2010). End of Well Report - Lona O-55. Chevron Canada Limited. (2014). End of Well Report - Margaree A-49. Chevron Canada Resources Limited. (2000). Well History Report - Hebron M-04. Chevron Standard Limited. (1978). Well History Report - Hopedale E-33. Chevron Standard Limited. (1980). Well History Report - Hibernia P-15. Chevron Standard Limited. (1980). Well History Report - South Labrador N-79. China Oil Services Limited. (2016, April). Drilling Rigs. Retrieved from http://www.cosl.com.cn/col/col23131/index.html ConocoPhillips Canada Resources Corporation. (2010). Well History Report - East Wolverine G-37. CROSCO. (2016, April). Retrieved from http://crosco.com/services/drilling/ Diamond Offshore. (2016, April). Rig Fleet Status. Retrieved from http://www.diamondoffshore.com/fleet-overview DrillingFormulas.com. (2016, March 8). Definitions of Various Offshore Drilling Rig Types and Generations. Retrieved from http://www.drillingformulas.com/definitions-of-various-offshoredrilling-rig-types-and-generations/ Eastcan Exploration Limited. (1973). Well History Report - Leif M-48. Eastcan Exploration Limited. (1974). Well History Report - Bjarni H-81. Eastcan Exploration Limited. (1975). Well History Report - Gudrid H-55. Eastcan Exploration Limited. (1976). Well History Report - Freydis B-87. Eastcan Exploration Limited. (1976). Well History Report - Snorri J-90. Eastcan Exploration Limited. (1976). Well History Report Cartier D-70. Elf Oil Exploration and Production Canada Limited. (1972). Well History Report - Hermine E-94. Elf Oil Exploration and Production Canada Limited. (1974). Well History Report - Emerillon C-56. Ensoc plc. (2016, April). Retrieved from http://www.enscoplc.com/global-operations/rigfleet/default.aspx Esso Resources Canada Limited. (1980). Final Well Report - Gabriel C-60. Esso Resources Canada Limited. (1985). Final Well Report - Baccalieu I-78. Esso Resources Canada Limited. (1986). Final Well Report - Kyle L-11. Fred. Olsen Energy . (2016, April). Fleet. Retrieved from http://fredolsen-energy.com/ GCaptain. (2012, April 5). Stena Carron Drillship Wins Contract West of Shetland. Retrieved from http://gcaptain.com/stena-carron-drillship-wins-contract/ Hercules Offshore. (2016, March). Fleet Status Report. Retrieved from http://ir.herculesoffshore.com/phoenix.zhtml?c=192573&p=irol-reportsOther Husky Energy. (2005). End of Well Report - Lewis Hill G-85. Husky Oil Operations Limited. (1985). Well History Report - North Ben Nevis P-83. Husky Oil Operations Limited. (1986). Well History Report - Conquest K-09. Husky Oil Operations Limited. (1986). Well History Report - Panther P-52. Husky Oil Operations Limited. (1987). Final Well History Report - Golconda C-64. Husky Oil Operations Limited. (1987). Well History Report - Fortune G-57. Husky Oil Operations Limited. (2007). End of Well Report - North Amethyst K-15. 99


Husky Oil Operations Limited. (2009). End of Well Report - Searcher C-87. Husky/Bow Valley East Coast Project. (1985). Well History Report - White Rose N-22. IHS Incorporated. (2016). IHS Petrodata Weekly Rig Count. Retrieved from https://www.ihs.com/products/offshore-oil-rig-data.html Jasper Offshore. (2016, April). Retrieved from http://jasperoffshore.com/ KCA Deutag. (2016, April ). Retrieved from http://www.kcadeutag.com/rigs/Pages/default.aspx Maersk Drilling. (2016, April). Retrieved from http://www.maerskdrilling.com/en/drilling-rigs/find-adrilling-rig Marine Traffic. (2007 - 2016). Rowan Gorilla VI. Retrieved from http://www.marinetraffic.com/en/ais/details/ships/shipid:714138/mmsi:538005011/imo:87640 78/vessel:ROWAN_GORILLA_VI Mobil Oil Canada Limited. (1973). Well History Report - Adolphus 2K-41. Mobil Oil Canada Limited. (1974). Well History Report - Bonnition H-32. Mobil Oil Canada Limited. (1974). Well History Report - Flying Foam I-13. Mobil Oil Canada Limited. (1976). Well History Report - Cumberland B-55. Mobil Oil Canada Limited. (1976). Well History Report - Dominion O-23. Mobil Oil Canada Limited. (1981). Well History Report - Ben Nevis I-45. Mobil Oil Canada Limited. (1982). Well History Report - Hebron I-13. Mobil Oil Canada Limited. (1982). Well History Report - Hibernia K-18. Mobil Oil Canada Limited. (1982). Well History Report - Sheridan J-87. Mobil Oil Canada Limited. (1982). Well History Report - South Tempest G-88. Mobil Oil Canada Limited. (1982). Well History Report - West Flying Foam L-23. Mobil Oil Canada Limited. (1983). Well History Report - Linnet E-63. Mobil Oil Canada Limited. (1984). Well History Report - North Dana I-43. Mobil Oil Canada Limited. (1984). Well History Report - Rankin M-36. Mobil Oil Canada Limited. (1985). Well History Report - Bonanza M-71. Monitor Systems Scotland Ltd. (n.d.). Marking and Monitoring System for Cold Stacked Rigs. Retrieved from http://www.monitor-systemsengineering.com/henry_goodrich_semi_submersible_rig.html Nalcor Energy. (2016). 2016 License Round Information. Retrieved from http://www.nalcorenergy.com/oilgas/2016-licensing-round-information.asp Noble Corporation. (2016, March). Fleet Status Report. Retrieved from http://phx.corporateir.net/phoenix.zhtml?c=98046&p=irol-reportsOther Ocean Rig. (2016, April ). Retrieved from http://www.ocean-rig.com/fleet/fleet_overview Odfjell Drilling. (2016, April). Fleet Status. Retrieved from http://www.odfjelldrilling.com/fleetstatus/Fleet-status--presence/ Pacific Drilling. (2016, February). Fleet Status Report. Retrieved from http://s1.q4cdn.com/189426555/files/FSR-2-1-16.pdf Pan American Petroleum Corporation. (1967). Well History Report - Tors Cove D-52. Pan American Petroleum Corporation. (1968). Well History Report - Grand Falls H-09. Paragon Offshore. (2016, April). Retrieved from http://www.paragonoffshore.com/ourfleet/default.aspx Petro-Canada Exploration Incorporated. (1981). Well History Report - Ogmund E-72. 100


Petro-Canada Exploration Incorporated. (1981). Well History Report - Roberval C-02. Petro-Canada Exploration Incorporated. (1982). Well History Report - North Leif I-05. Petro-Canada Exploration Incorporated. (1982). Well History Report - Roberval K-92. Petro-Canada Exploration Incorporated. (1983). Well History Report - Rut H-11. Petro-Canada Exploration Incorporated/Total Eastcan Exploration Limited. (1981). Well History Report Bjarni O-82. Petro-Canada Exploration Incorporated/Total Eastcan Exploration Limited. (1981). Well History Report Gilbert F-53. Petro-Canada Incorporated. (1981). Final Well Report - North Bjarni F-06. Petro-Canada Incorporated. (1983). Well History Report - Pothurst P-19. Petro-Canada Incorporated. (1984). Well History Report - Corte Real P-85. Petro-Canada Incorporated. (1985). Well History Report - North Trinity H-71. Petro-Canada Incorporated. (1985). Well History Report - Terra Nova K-18. Petro-Canada Incorporated. (1987). Well History Report - Lancaster G-70. Petro-Canada Incorporated. (1990). Well History Report - King's Cove A-26. Petro-Canada Incorporated. (1999). Well History Report - Brent's Cove I-30. Petro-Canada Incorporated. (2003). Final Well History Report - Mizzen L-11. Petro-Canada Incorporated. (2003). Well History Report - Tuckamore B-27. Petro-Canada Incorporated. (2010). Well History Report - Ballicatters M-96. PT Apexindo Pratama Duta Tbk. (2016, April). Retrieved from http://www.apexindo.com/offshore_rigs?contentid=1 Rowan Companies. (2016, January). Fleet Status Report. Retrieved from http://s2.q4cdn.com/240362030/files/doc_downloads/Fleet/2016/01-202016_Fleet_Status_Report.pdf Saga Drilling . (2015, October). Retrieved from http://www.sagadrilling.com/wpcontent/uploads/2015/10/RIG-INFORMATION-FACTSHEET.pdf Saipem. (2016, April). Retrieved from http://www.saipem.com/sites/SAIPEM_en_IT/landing/Drilling.page Seadrill. (n.d.). Retrieved from http://www.seadrill.com/~/media/Images/S/Seadrill/image-gallery/largeimages/west-aquarius.jpg Seadrill . (2016, May). Fleet Status Report. Retrieved from http://www.seadrill.com/~/media/Files/S/Seadrill/our-fleet/fleet-status-report-Q1-2016.pdf Songa Offshore. (2016, April). Rigs & Activities. Retrieved from http://www.songaoffshore.com/Pages/Rigs.aspx Statoil Canada Limited. (2011). End of Well Report - Mizzen F-09. Statoil Canada Limited. (2013). Final Well Report - Bay du Nord C-78z. Statoil Canada Limited. (2013). Final Well Report - Federation K-87. Statoil Canada Limited. (2013). Final Well Report - Harpoon O-85. Statoil Canada Limited. (2015). Final Well Report - Bay du Nord C-78. StatoilHydro Canada Limited. (2009). Final Well Report - Mizzen O-16. Stena Drilling . (2016, April). Fleet Availability. Retrieved from http://www.stena-drilling.com/fleetavailability/stena-carron Tenneco Oil and Minerals Limited. (1972). Well History Report - Leif E-38. 101


Texaco Canada Enterprises Limited. (1989). Well History Report - South Merasheen K-55. Texaco Canada Resources Limited. (1980). Well History Report - Blue H-28. Total Eastcan Exploration Limited. (1977). Well History Report - Herjolf M-92. Total Eastcan Exploration Limited. (1977). Well History Report - Karlsefni A-13. Total Eastcan Exploration Limited. (1978). Well History Report - Skolp E-07. Total Eastcan Exploration Limited. (1979). Well History Report - Tyrk P-100. Transocean Ltd. (2016, April). April 2016 Fleet Status Report. Retrieved from http://www.deepwater.com/ United States Geological Survey (USPS). (2009, June 24). U.S. Geological Survey. Retrieved from http://geomaps.wr.usgs.gov/socal/geology/geologic_history/images/timescale.jpg Vantage Drilling International. (2016, April). Retrieved from http://vantagedrilling.com/rig-fleet/

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Appendix A: Individual Well Summary Reports – Labrador Area

103


Appendix A: Table of Contents Leif E-38 ............................................................................................................................................. 105 Leif M-48 ............................................................................................................................................ 109 Bjarni H-81 ......................................................................................................................................... 113 Gudrid H-55........................................................................................................................................ 117 Freydis B-87 ....................................................................................................................................... 121 Snorri J-90 .......................................................................................................................................... 125 Karlsefni A-13 ..................................................................................................................................... 129 Indian Harbour M-52 .......................................................................................................................... 133 Cartier D-70 ........................................................................................................................................ 137 Herjolf M-92 ....................................................................................................................................... 141 Skolp E-07 .......................................................................................................................................... 145 Hopedale E-33 .................................................................................................................................... 149 Roberval K-92 ..................................................................................................................................... 153 Hare Bay E-21 ..................................................................................................................................... 157 Tyrk P-100 .......................................................................................................................................... 160 Bjarni O-82 ......................................................................................................................................... 164 Gilbert F-53 ........................................................................................................................................ 169 Roberval C-02 ..................................................................................................................................... 173 South Labrador N-79 .......................................................................................................................... 177 Ogmund E-72 ..................................................................................................................................... 181 North Leif I-05 .................................................................................................................................... 185 North Bjarni F-06 ................................................................................................................................ 189 Rut H-11 ............................................................................................................................................. 192 Corte Real P-85................................................................................................................................... 196 Pothurst P-19 ..................................................................................................................................... 200 South Hopedale L-39 .......................................................................................................................... 204

104


Leif E-38 Leif E-38, operated by Tenneco Oil and Minerals Limited, was a new field wildcat exploration well drilled during the summer and fall of 1971 in the Hopedale basin of the Southern Labrador area. At a water depth of 167.7 meters, Leif E-38 was drilled using Typhoon, a first generation, moored drillship owned by Storm Drilling Company. The well was originally designed as Leif P-48 but after several unsuccessful attempts to run surface casing through the boulder-bed near surface, it was decided to move to a new location approximately 914 meters south of the original well site. In total five unsuccessful holes were attempted and this entire incident accounted for 25 days of operations as the rig did not arrive at the new well site until July 31, 1971. This time is not considered in the total well time. The rig arrived on the Leif E-38 site on July 31, 1971 and the well was suspended on October 2, 1971 after 63 days. Wait on weather and non-productive time accounted for 18.1 percent and 41.6 percent of total time. Once the hole was spudded in the new location, operations were delayed again when the pressure valve in the 20” casing string failed and fishing attempts were unsuccessful. The hole was abandoned once again and operations moved approximately 23 meters west to spud a new hole. Once drilling resumed, a depth of 960.1 meters was reached and logged. Drilling did continue and did reach 1084.2 meters, but before they were able to log the depth, they were hit by a storm. This storm caused significant delays and led to the decision to suspend operations. The end of well report references that this drillship did not have the capabilities to survive the weather in this region. There were no icebergs spotted during operations. As well, there were no HSE or lost time incidents reported. The total drill time to total depth, excluding time spent reaming, was 4.3 days. Tertiary aged intervals were encountered until the well was suspended at 1084.2 meters (MD). The rate of penetration at total depth was 5.8 meters per hour using a water based mud with a weight of 1198.3 kg/m3. The well was drilled with sea water until a depth of 355 meters. The well has been plugged and abandoned (Tenneco Oil and Minerals Limited, 1972). Assumptions: The time spent drilling the failed Leif P-48 is not considered in total time of this well or rate of penetration calculations. The time spent on the first hole of Leif E-38 is considered non-productive time and is not considered in drilling time. Mud weights were converted from lbs/gallon to kg/m3.

105


Well Name: Tenneco et al Leif E-38

Well Summary

Well Date: July 6, 1971 - September 30, 1971

Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Well Status HSE Incidents

Southern Labrador Hopedale Summer 167.7 Exploration Typhoon (Storm Drilling Company - 1969) 1st Gen, Drillship, Moored Plugged and Abandoned None Reported

Dr i l li ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

1084.2 NA 904.3 1162.3 - 1198.3 Water Based

Ti m e Ana l ysi s (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 60.9 4.3 25.3 11.0 0.0 1.2 19.0

Per for ma nce Metr i cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

14.9 67.3 15.2 41.6% 18.1%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 4.0 4.0 1.2

Aver a ge 8.7 8.7 4.8

M axi mum 17.2 17.2 10.4

106


Leif E-38 - Time Depth Plot Time (days) 0

50

100

150

200

250

0 500

Depth Below Mudline (m)

1000 Labrador Area Minimum (m)

1500

Labrador Area Maximum (m)

2000

Leif E-38 2500 3000 3500 4000 4500 5000

Leif E-38 - Time Distribution Drilling Time 7% Other Rig Operations 31%

Data Acquisition 2%

Non Productive Time 42%

Wait on Weather 18%

107


108


Leif M-48 Leif M-48, operated by Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer of 1973 in the Hopedale basin of the Southern Labrador area. At a water depth of 165.2 meters, Leif M-48 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site on August 1, 1973 and the well was completed on August 29, 1973 after 27.3 days of operations. There were no wait on weather or iceberg delays reported and non-productive time accounted for 3.8 percent of total time. The most significant non-productive time delay was for fishing operations but there were no specific summary of operations provided to know when and why the fishing operations were necessary. Additionally, there were no HSE incidents reported. The total drill time to total depth 1879.1 meters was 7.4 days. The average ROP was 9.6 meters per hour using a water based mud with weights ranging from 1080 to 1290 kg/m3. The well encountered Quaternary, Tertiary and Cretaceous aged intervals during drilling. Testing results proved that the well was a dry hole so it was permanently plugged and abandoned (Eastcan Exploration Limited, 1973).

109


Well Name: Eastcan et al Leif M-48

Well Summary

Well Date: August 1 - August 29, 1973

Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Labrador Hopedale Summer 165.2 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


1879.4 NA 1701.7 1080 - 1290 Water Based


NA 27.3 7.4 1.0 0.0 0.0 1.4 17.5


62.3 16.0 65.7 3.8% 0.0%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 1.3 1.3 5.3 2.2

Aver a ge 9.6 12.0 5.3 4.3

M axi mum 18.6 18.6 5.3 32.9

110


Leif M-48 - Time Depth Plot Time (days) 0

50

100

150

200

250

0 500


1000 Labrador Area Minimum (m) 1500


2000

Leif M-48

2500 3000 3500 4000 4500 5000

Leif M-48 - Time Distribution

Drilling Time 27%


Non Productive Time 4% Wait on Weather 0% Data Acquisition 5%

111


Meters Leif M-48 - ROP vs. Depth Axis Title (m/hr) Rate of Penetration 0

2

4

6

8

10

12

14

16

18

20

00 200 200

Measured Axis Title Depth (m)

400 400 600 600 800 800 1000 1000 1200 1200 1400 1400 1600 1600 1800 1800 2000 2000 Water

Cenozoic

Cretaceous

112


Bjarni H-81 Bjarni H-81, operated by Total Eastcan Exploration Limited, was a wildcat exploration well drilled during the summer and fall of 1973. It was drilled on the Bjarni structure on the Hopedale basin in the Southern Labrador area. At a water depth of 140 meters, the well was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. Operations began on August 29, 1973 and were suspended due to weather on October 12, 1973. During operations non-productive time and wait on weather accounted for 2.0 percent and 15.6 percent respectively. Non-productive time was mostly attributed to cable repair. There were no reported iceberg sightings or HSE incidents. Total drilling time to total depth of 2515 meters (MD) was 12 days. The average rate of penetration was 8.2 meters per hour using water based muds with weights ranging from 1080 to 1310 kg/m3. The well encountered Tertiary and Cretaceous aged intervals and it has been plugged and abandoned (Eastcan Exploration Limited, 1974).

113


Well Name: Eastcan et al Bjarni H-81

Well Summary

Well Date: August 29, 1973 - October 12, 1973

Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Rig Day Rate Current Well Status HSE Incidents

Southern Labrador Hopedale Summer - Fall 140.2 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Not Available Plugged and Abandoned None Reported

Dr i l li ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled Mud Weight (kg/m3) Drilling Fluid Type

2515 NA 2362 1080 - 1310 Water Based

Ti m e Ana l ysi s (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Data Acquisition Other Rig Operations

NA 44.6 12.0 0.9 7.0 2.9 21.9


52.9 18.9 56.6 2.0% 15.6%


Mi ni mum 2.0 9.6 0.7 1.0

Aver a ge 8.2 13.2 4.8 5.1

M axi mum 40.2 16.8 9.6 31.6

114


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Drilling Time 27% Other Rig Operations 49% Non Productive Time 2% Wait on Weather 16% Data Acquisition 6%

115


116


Gudrid H-55 Gudrid H-55, operated by Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer and fall of 1974 in the Hopedale basin of the Southern Labrador area. At a water depth of 299.3 meters, Gudrid H-55 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site on July 12, 1974 and the well was completed on October 3, 1974 after 86.9 days of operations. Wait on weather and non-productive time accounted for 18.9 percent and 11.3 percent of total time. There is information stating that there was wait on ice time but there is insufficient reporting regarding the number of wait on ice days which attributed to wait on weather time. The most significant non-productive time delay was after spudding the hole, the 30” conductor pipe was set too low and caused technical problems causing the hole to be abandoned and moved a half mile away from the original site. There were also 3.6 days of time spent on a number of lost circulation issues. There were no HSE incidents reported. The total drill time to total depth was 13.7 days. The ROP at total depth of 2838.9 meters (MD) was 1.9 meters per hour with the average of 7.4 meters per hour for the entire well. A water based mud with a weight ranging from 1040 to 1240 kg/m3 was used to drill the well. The well encountered Tertiary, Carboniferous and Precambrian aged intervals. Upon testing, gas at a rate of 20 million cubic feet per day (MMCFPD) was encountered at 2662.7 meters. The well was permanently plugged and abandoned (Eastcan Exploration Limited, 1975). Assumptions: Drill Stem Testing is included in data acquisition time. The drill time for the first hole is also considered non-productive time.

117


Well Name: Eastcan et al Gudrid H-55

Well Summary

Well Date: July 12th, 1974 to October 3rd, 1974


Southern Labrador Hopedale Summer - Fall 299.3 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported

Dr i l li ng D ata Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

2838.9 NA 2526.5 1040 -1240 Water Based

Ti m e Ana l ysi s (D ays) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 86.9 14.2 9.8 16.4 0.0 10.3 36.2


29.1 34.4 33.0 11.3% 18.9%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Carboniferous (m/hr) ROP - Precambrian (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.4 4.7 1.2 0.4 2.6

Aver a ge 7.4 9.9 2.5 1.4 5.6

M ax i mum 16.3 16.3 5.6 1.9 29.1

118


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Gudrid H-55 - Time Distribution Drilling Time 16% Other Rig Operations 42%


Wait on Weather 19% Data Acquisition 12%

119


120


Freydis B-87 Freydis B-87, operated by Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer of 1975 in the Hopedale basin of the Southern Labrador area. At a water depth of 178.7 meters, Freydis B-87 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site on July 2, 1975 and the well was completed on August 8, 1975 after 38 days. Wait on weather and non-productive time accounted for 3.0 percent and 9.4 percent of total time. The most significant non-productive time delay was because of fishing operations but there is no indication in the end of well report as to why and what they were fishing for. There were no wait on ice time delays and no reported HSE or lost time incidents. The total drill time to total depth of 2314 meters was 13.1 days. The average rate of penetration during drilling was 6.7 meters per hour using water based muds with weights ranging from 1030 to 1190 kg/m3. The well encountered Tertiary, Cretaceous and Ordovician aged intervals. The reservoir units proved to be water-saturated and was permanently plugged and abandoned (Eastcan Exploration Limited, 1976).

121


Well Name: Eastcan et al Freydis B-87

Well Summary

Well Date: July 2, 1975 - August 8, 1975


Southern Labrador Hopedale Basin Summer 178.7 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


2314.0 NA 2123.0 1030 - 1190 Water Based


NA 38.0 13.1 3.6 1.1 0.0 2.4 17.8


55.8 17.9 59.5 9.4% 3.0%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Ordovician (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.9 2.4 3.8 0.9 1.6

Aver a ge 6.7 16.0 10.5 2.2 6.2

M axi mum 26.4 26.4 11.9 3.8 44.4

122


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Freydis B-87 - Time Distribution

Drilling Time 35%


Data Acquisition 6%

Non Productive Time Wait on Weather 9% 3%

123


Meters Freydis B-87 - ROP vs. Depth Axis Title (m/hr) Rate of Penetration 0

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124


Snorri J-90 Snorri J-90, operated by Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer and fall of 1975 and was re-entered for testing during the summer of 1976. The location of the well was in the Hopedale basin of the Northern Labrador area. At a water depth of 140.8 meters, Snorri J-90 was drilled using Sedco International’s Sedco 445, a second generation, dynamically positioned drillship. In 1976, the well was re-entered using Somaser’s Pelican, a second generation, dynamically positioned drillship but there was no drilling time using this rig. The well was spudded on July 26, 1975 and after 76 days of operations it was suspended on October 10 due to weather conditions. The well was re-entered for testing on August 30, 1976 and testing was completed by September 8, 1976 making the total time of well 89.9 days. Wait on weather and nonproductive time accounted for 12.6 percent and 15.1 percent of total time. The most significant nonproductive time delay was 9 days repairing underwater equipment (BOP). Wait on ice delays made up 3 days of non-productive time. There were no reports of HSE or lost time incidents. In 1975, after 17.1 days of drilling, total depth was reached at 3209.8 meters (MD) in the Precambrian Basement. The average ROP for the well was 7.4 meters per hour and at the total depth, the ROP was 0.7 meters per hour. A water based mud with a weight ranging from 1100 to 1200 kg/m3 was used to drill the well. The well encountered Tertiary, Cretaceous and Precambrian aged intervals. In 1976, the well was re-entered using the Pelican drillship with the purpose of conducting drill stem testing. The results of the testing showed a yield of gas with condensate. The well was permanently plugged and abandoned (Eastcan Exploration Limited, 1976). Assumptions: Wait on weather and wait on operator are grouped together in the well report time summary. Since there is no report of significant delays due to waiting for the operator, all time is grouped as wait on weather.

125


Well Name: Eastcan et al Snorri J-90

Well Summary


Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification

Northern Labrador Hopedale Summer - Fall 140.8 Exploration

Rig Name (Owner - Year Built)

Sedco 445 (Sedco International - 1971) Pelican (Somaser - 1972)

Rig Type Current Well Status HSE Incidents

2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3209.8 NA 3057.8 1100 - 1200 Water Based


NA 89.9 17.1 10.6 11.3 3.0 6.5 41.3


34.0 29.4 36.7 15.1% 12.6%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Precambrian (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.7 2.8 0.7 0.7 1.8

Aver a ge 7.4 10.6 4.3 0.8 5.6

M ax i mum 23.4 23.4 8.4 1.3 58.6

126


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Snorri J-90 - Time Distribution Drilling Time 19% Other Rig Operations 46%


Data Acquisition 7%

Wait on Weather 13%

127


128


Karlsefni A-13 Karlsefni A-13, operated by Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer and fall of 1975 and 1976 in the Saglek basin of the Northern Labrador area. At a water depth of 174.7m, Karlsefni A-13 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site on August 10, 1975 and was suspended on September 25, 1975 after 47.5 days. At this time, total depth was 3284.8 meters (MD). Upon re-entering the well on September 13, 1976, operations reached a total depth of 4150 meters (MD) and finished on October 25, 1979. Total well operation time for the two seasons was 94.8 days. Wait on weather and non-productive time accounted for 2.8 percent and 5.4 percent of total time. A total of 2.7 days of non-productive time was because of wait on ice. There were no reports of any HSE or lost time incidents during operations. Karlsefni A-13 was the first exploration well drilled in the Saglek basin. The total drill time to total depth was 24.9 days with an average rate of penetration of 6.6 meters per hour using a water based mud with a weights ranging from 1030 to 1440 kg/m3. The well encountered Tertiary aged intervals and was permanently plugged and abandoned (Total Eastcan Exploration Limited, 1977).

129


Well Name: Eastcan et al Karlsefni A-13

Well Summary



Northern Labrador Saglek Summer - Fall 174.7 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


4128.2 NA 3963.1 1030 - 1440 Water Based


NA 94.8 24.9 2.4 2.6 2.7 13.0 49.1


41.8 23.9 48.5 5.4% 2.8%


Mi ni mum 0.8 0.9 2.1

Aver a ge 6.6 6.8 6.3

M axi mum 21.0 21.0 53.2

130


Karlsefni A-13 - Time Depth Plot Time (days) 0

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Karlsefni A-13

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Karlsefni A-13 - Time Distribution

Drilling Time 26%



131


132


Indian Harbour M-52 Indian Harbour M-52, operated by BP Exploration Canada Limited, was an exploration well drilled during the summer and fall of 1975 and 1976 in the Hopedale basin of the Southern Labrador area. At a water depth of 198.2 meters, Indian Harbour M-52 was first drilled using Nordic Offshore Drilling’s Havdrill, a second generation, dynamically positioned drillship. The rig arrived on site on August 12, 1975 and after three unsuccessful attempts, the well was spudded on August 21, 1975. The well was suspended due to worsening weather on October 26, 1976 after 75 days. Wait on weather and non-productive time accounted for 13.7 percent and 20.1 percent of total time. Non-productive time delays were as a result of fishing operations while trying to spud the well and failure of the dynamic positioning system after a severe storm. As well, delays were caused when the 20” casing could not pass a depth of 335 meters and attempts to clean up the hole failed, causing the need for the riser to be pulled and re-run. In the end of well report, wait on weather and wait on ice are grouped together so it is not possible to determine the number of icebergs spotted and to what extent they caused delays. Additionally, there were no HSE or lost time incidents reported. When operations to re-enter the well commenced on August 15, 1976, Sedco International’s Sedco J, a second generation, semi-submersible rig with mooring capabilities was used. The well was re-entered and operations were completed on November 6, 1976 after 83 days. Wait on weather and nonproductive time delays accounted for 3.4 percent and 21.1 percent of total time. The largest source of non-productive time was 17.4 days spent searching for and positioning on the wellhead. Wait on ice caused 1.2 days on delay. There were no reported HSE or lost time incidents. The total drill time to total depth of 3958.1 meters (MD) was 37.2 days. The average rate of penetration was 4.2 meters per hour and at the total depth, the rate was 4.1 meters per hour. A water based mud with weights ranging from 1078 to 1473 kg/m3 was used to drill the well. The well encountered Tertiary, Cretaceous and Ordovician aged intervals and was plugged and abandoned in 1976 (BP Exploration Canada Limited, 1977). Assumptions: Time spent drilling through cement plugs to re-enter well are not included in drilling time.

133


Well Name: BP Columbia et al Indian Harbour M-52

Well Summary

Well Date: August 12, 1975 - November 6, 1976

Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type

Southern Labrador Hopedale Summer - Fall 198.2 Exploration Havdrill (Nordic Offshore - 1973) Sedco J ( Sedco International - 1972) 2nd Gen Drillship, DP/ 2nd Gen Semi-submersible, Moored

Current Well Status HSE Incidents

Plugged and Abandoned None Reported

Dr i ll ing Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3958.1 NA 3713.9 1078 - 1473 Water Based

Time Ana l ysis (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 158.3 37.2 32.7 13.2 1.2 5.5 68.6


23.5 42.6 24.3 21.4% 8.3%

Dr i ll ing M etr i cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Ordovician (m/hr) Days/1000 meters while drilling (days)

Mini mum 3.3 3.3 2.1 1.2 1.8

Aver a g e 4.2 5.7 2.3 1.8 10.0

M a ximum 22.6 22.6 2.4 2.3 12.6

134


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Indian Harbour M-52 - Time Distribution Drilling Time 24% Other Rig Operations 43%

Non Productive Time 21% Data Acquisition 4%

Wait on Weather 8%

135


136


Cartier D-70 Cartier D-70, operated by Eastcan Exploration Limited, was an exploration well drilled during the fall of 1975 in the Hopedale basin of the Southern Labrador area. At a water depth of 310.4 meters, Cartier D70 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site and the well was spudded on September 27, 1975 and was completed on October 31, 1975 after 36 days of operations. Wait on weather and non-productive time accounted for 30.2 percent and 0.7 percent of total time. There were no reports of wait on ice time or HSE and lost time incidents. After 5.7 days of drilling, total depth was reached at 1927 meters (MD) in the basement of granodiorite rock. The average rate of penetration for the well was 11.4 meters per hour and at the total depth, rate of penetration was 0.4 meters per hour. A water based mud with a weight ranging from 1040 to 1190 kg/m3 was used during drilling. The well encountered Tertiary and Cretaceous aged intervals and it has been permanently plugged and abandoned (Eastcan Exploration Limited, 1976).

137


Well Name: Eastcan et al Cartier D-70

Well Summary

Well Date: September 27, 1975 - October 31, 1975


Southern Labrador Hopedale Fall 310.4 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


1926.9 NA 1604.5 1040 - 1190 Water Based


NA 36.3 5.7 0.3 11.0 0.0 2.5 17.0


44.2 27.5 47.4 0.7% 30.2%


Mi ni mum 0.4 1.8 13.5 2.2

Aver a ge 11.4 13.0 13.5 3.6

M axi mum 18.9 18.9 13.5 22.8

138


Cartier D-70 - Time Depth Plot Time (days) 0

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Cartier D-70 - Time Distribution Drilling Time 15% Non Productive Time 1%


Wait on Weather 30%

Data Acquisition 7%

139


140


Herjolf M-92 Herjolf M-92, operated by Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer and fall of 1976 in the Hopedale basin of the Southern Labrador area. At a water depth of 138.7 meters, Herjolf M-92 was drilled using the Zapata Ugland, a second generation, moored semi-submersible rig. The rig arrived on site and the well was spudded on August 28, 1976 and operations completed on November 23, 1976 after 89 days. On day 3 of operations, it was decided to move to a new hole because the original hole could not be re-entered due to poor visibility at bottom caused by silt. Non-productive time accounted for 4.1 percent of total time. This was mainly attributed to wait on ice delays and repairs on the mooring system. There were no reported wait on weather delays for this well and no reports of HSE or lost time incidents. The well was drilled to a total depth of 4086.1 meters (MD) after 32.5 days of drilling time. The average rate of penetration for the well was 5.0 meters per hour and at the total depth the rate was 0.4 meters per hour. A water based mud with weights ranging from 1050 to 1320 kg/m3 was used. The well encountered Tertiary and Cretaceous aged intervals but no hydrocarbon bearing reservoirs were encountered. The well was permanently plugged and abandoned (Total Eastcan Exploration Limited, 1977). Assumptions: On bit record, there were no hours drilled provided for bit 18. Based on the drilling rate on other bit runs at that time and the number of meters drilled, an estimated 5 meters per hour ROP was inserted in order to best represent the data.

141


Well Name: Eastcan et al Herjolf M-92

Well Summary



Southern Labrador Hopedale Summer- Fall 138.7 Exploration Zapata Ugland (Zapata Ugland - 1974) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4086.1 NA 3920.3 1050 - 1320 Water Based


NA 89.0 32.5 3.4 0.0 0.2 7.7 45.0


44.1 22.7 48.3 4.1% 0.0%


Mi ni mum 0.2 0.7 0.2 2.1

Aver a ge 5.0 7.9 3.5 8.3

M axi mum 19.8 19.8 6.7 227.8

142


Herjolf M-92 - Time Depth Plot Time (days) 0

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Labrador Area Minimum (m) Labrador Area Maximum (m) 2000 Herjolf M-92 2500 3000 3500 4000 4500 5000

Herjolf M-92 - Time Distribution

Drilling Time 36%


Non Productive Time Wait on Weather 4% Data Acquisition 0% 9%

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144


Skolp E-07 Skolp E-07, operated by Total Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the summer and fall of 1976 in the Saglek basin of the Northern Labrador area. At a water depth of 166.5 meters, Skolp E-07 was drilled using Helmer Staubo & Company’s Pelerin, a second generation, dynamically positioned drillship. The well was spudded on July 22, 1978 and operations completed on September 30, 1978 after 72 days. Wait on weather and non-productive time accounted for 5.4 percent and 3.8 percent of total time. Nonproductive time was made up of 1.6 days in fishing operations time and 1 day of general rig repairs but there is insufficient data available to know the origin of the repairs. The rig waited on ice for 0.6 days as well. There were no reported HSE or lost time incidents. Drilling time made up 21.9 days of operations and the well was drilled to a total depth of 2992 meters (MD). The average ROP in the well was 5.4 meters per hour and at the total depth, the ROP was 0.7 meters per hour. Water based muds with weights ranging from 1030 to 1350 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals and was permanently plugged and abandoned (Total Eastcan Exploration Limited, 1978).

145


Well Name: Total Eastcan et al Skolp E-07

Well Summary



Northern Labrador Saglek Summer - Fall 166.5 Exploration (Wildcat) Pelerin (Helmer Staubo & Co. - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


2992.0 NA 2815.0 1030 - 1350 Water Based


NA 72.2 21.9 2.7 3.9 0.6 4.9 38.2


39.0 25.6 41.9 3.8% 5.4%


Mi ni mum 0.5 11.8 0.5 2.7

Aver a ge 5.4 11.8 3.8 7.8

M axi mum 15.4 11.8 15.4 76.4

146


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Skolp E-07 - Time Distribution Drilling Time 30%



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148


Hopedale E-33 Hopedale E-33, operated by Chevron Standard Limited, was an exploration well drilled during the summer and fall of 1978 in the Hopedale basin of the Southern Labrador area. At a water depth of 549.8 meters, Hopedale E-33 was drilled using the Ben Ocean Lancer, a second generation, dynamically positioned drillship. The well was spudded on August 9, 1978 and operations were completed on October 1, 1978 after 53 days. Wait on weather and non-productive time accounted for 9.2 percent and 3.7 percent of total time. As well, there was a delay of 3 hours while waiting for an iceberg to pass. There were no reports of HSE or lost time incidents. The total depth of the well was 2069.4 meters (MD) and total drilling time was 5.1 days. The average rate of penetration during drilling was 12.4 meters per hour and at the total depth the rate was 2.5 meters per hour. A water based mud with weights ranging from 1090.1 to 1353.7 kg/m3 was used to drill the well. There were three drill stem tests conducted and the well has been classified as a gas well. The well encountered Tertiary, Cretaceous and Ordovician aged intervals and it has been permanently plugged and abandoned (Chevron Standard Limited, 1978). Assumptions: There was insufficient data in the well history report provided to plot the time and depth curve. The times are estimated based on the dates of casing installation, non-productive and wait on weather delays and the date total drilling was completed.

149


Well Name: Chevron et al Hopedale E-33

Well Summary



Southern Labrador Hopedale Summer - Fall 549.8 Exploration Ben Ocean Lancer (Odeco - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


2069.4 NA 1519.5 1090.1 - 1353.7 Water Based


NA 53.0 5.1 1.8 4.9 0.1 9.8 31.3


28.7 34.9 35.2 3.7% 9.2%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Ordovician(m/hr) Days/1000 meters while drilling (days)

Mi ni mum 1.5 19.6 1.5 5.8 1.6

Aver a ge 12.4 20.2 13.1 5.8 3.4

M axi mum 25.3 25.3 25.3 5.8 28.5

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Hopedale E-33 - Time Distribution Drilling Time 10%


Wait on Weather 9%



151


Hopedale Meters E-33 - ROP vs. Depth Axis Title (m/hr) Rate of Penetration 0

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152


Roberval K-92 Roberval K-92, operated by Total Eastcan Exploration Limited, was a new field wildcat exploration well drilled during the fall of 1978 and the summer and fall of 1979 in the Hopedale basin of the Southern Labrador area. At a water depth of 268.5 meters, Roberval K-92 was drilled using Helmer Staubo & Company’s Pelican, a second generation, dynamically positioned drillship. Operations began on this well on October 2, 1978 but they were suspended on October 27, 1978 until 1979 when the well was re-entered from July 4, 1979 to October 3, 1979. Evaluation of the well was suspended once again in 1979 and in 1982, the well was re-entered for 8 days to set abandonment plugs. This entire well operation was 132 days. Wait on weather and non-productive time accounted for 7.7 percent and 15.8 percent of total time. The most significant non-productive time delays were due to 321.3 hours in fishing operations. A sidetrack was also attempted but operations were suspended due to issues with the drillship’s thrusters near the end of drill season. There was approximately 1 day of wait on ice delays during operations. There were no reports of HSE or lost time incidents. Total depth was reached at 3874 meters (MD) after 31.7 days of drilling time. The average ROP for the well was 4.7 meters per hour and at the total depth the rate was 0.7 meters per hour. Water based muds with weights ranging from 1030 to 1270 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Paleozoic aged intervals during drilling and it has been permanently plugged and abandoned (Petro-Canada Exploration Incorporated, 1982). Assumptions: Drill time spent re-entering the hole is not included in drilling time or ROP calculations.

153


Well Name: Total Eastcan et al Roberval K-92

Well Summary

Well Date: October 2, 1978 - July 8, 1982


Southern Labrador Hopedale Fall - Summer 268.5 Exploration Pelerin (Helmer Staubo & Co. - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3874.0 NA 3593.0 1030 - 1270 Water Based


NA 132.0 31.7 20.0 10.2 0.9 8.5 60.7


27.2 36.7 29.1 15.8% 7.7%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Paleozoic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.5 1.9 0.7 0.5 2.5

Aver a ge 4.7 8.8 2.6 2.3 8.8

M axi mum 16.5 16.5 5.6 3.1 83.3

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Roberval K-92 - Time Depth Plot Time (days) 0

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Roberval K-92 - Time Distribution

Drilling Time 24% Other Rig Operations 46%


Data Acquisition 6%

Wait on Weather 8%

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156


Hare Bay E-21 Hare Bay E-21, operated by BP Exploration Canada Limited, was an exploration well drilled during the summer and fall of 1979 in the St. Anthony basin of the North Eastern Newfoundland area. At a water depth of 239 meters, Hare Bay E-21 was drilled using Sedco International’s Sedco 707, a second generation, semi-submersible rig with mooring capabilities. The rig arrived on site and the well was spudded on June 12, 1979 and operations were completed on October 22, 1979 after 138.2 days. Wait on weather and non-productive time accounted for 1.1 percent and 6.9 percent of total time. The most significant non-productive time delays were due to rig equipment repair and fishing operations which accounted for 5.2 and 4.2 days of operations respectively. There were 10 icebergs spotted during operations but none caused delays to operations. There were zero reports of HSE or lost time incidents. Total depth of 4874 meters (MD) was reached after 45.4 days in drilling time. The average ROP for the well was 4.2 meters per hour and at the total depth the rate was 1.3 meters per hour. Water based muds with weights ranging from 1030 to 1300 kg/m3 were used to drill the well. Tertiary, Cretaceous and Pennslyvanian aged intervals were encountered while drilling the well and it was permanently plugged and abandoned (BP Exploration Canada Limited, 1979).

157


Well Name: BP et al Hare Bay E-21

Well Summary

Well Date: June 12, 1979 - October 22, 1979


North Eastern Newfoundland St. Anthony Summer - Fall 239.0 Exploration Sedco 707 (Sedco International - 1976) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4874.0 4851.6 4610.6 1030 - 1300 Water Based


NA 138.2 45.4 9.5 1.6 0.0 6.1 75.7


33.4 30.0 34.9 6.9% 1.1%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Pennsylvanian (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.9 3.5 1.8 0.9 1.5

Aver a ge 4.2 12.2 2.4 1.9 9.9

M axi mum 28.6 18.6 10.0 4.0 44.0

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*No Time Depth Plot

Hare Bay E-21 - Time Distribution

Drilling Time 33%



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Tyrk P-100 Tyrk P-100, operated by Total Eastcan Exploration Limited, was an exploration well (dry hole) drilled during the summer of 1979 in the Hopedale basin of the Southern Labrador area. At a water depth of 117 meters, Tyrk P-100 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site and the well was spudded on July 19, 1979 and was completed on August 26, 1979 after 42 days. Non-productive time accounted for 9.2 percent of total time. There were no delays due to weather and 0.2 days in wait on ice time. There were no reports of HSE or lost time incidents. A total 10.1 days of drilling was performed to reach total depth of 1739 meters (MD). The average ROP was 6.7 meters per hour and at the total depth the rate was 0.4 meters per hour. The well was drilled using water based muds with weights ranging from 1080 to 1320 kg/m3. The well encountered Tertiary, Cretaceous and Paleozoic aged intervals. Upon evaluation, there were no oil or gas hydrocarbon shows and the well was permanently plugged and abandoned (Total Eastcan Exploration Limited, 1979). Assumptions: There were no metrics provided for the mud weight in the mud characteristics reports so the assumption is that it is measured in specific gravity.

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Well Name: Total Eastcan et al Tyrk P-100

Well Summary



Southern Labrador Hopedale Summer 117.0 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


1739.0 NA 1610.0 1080 - 1320 Water Based


NA 42.4 10.1 3.7 0.0 0.2 2.5 25.9


38.0 26.3 40.3 9.2% 0.0%


Mi ni mum 0.4 1.2 1.2 0.4 2.8

Aver a ge 6.7 12.3 5.3 1.5 6.3

M axi mum 14.7 14.7 9.7 2.1 111.1

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Tyrk P-100 - Time Distribution Drilling Time 24%



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Bjarni O-82 Bjarni O-82, operated by Total Eastcan Exploration Limited, was a delineation well drilled during the summer of 1979. It was drilled on the Bjarni structure in the Hopedale basin of the Southern Labrador area. At a water depth of 144 meters, the well was drilled using Offshore Europe’s Petrel, a second generation, dynamically positioned drillship. The well was spudded on July 29, 1979 and on October 10, 1979 during testing operations, the well was suspended due to weather. In total, there were 16.7 days in non-productive time delays and 16.1 in wait on weather days. This includes 10.5 hours of waiting on ice. Sources of non-productive time delays include 2.5 days on fishing operations and there were 8.8 days for rig incident, specifically, to fix the BOP after it was disconnected, to repair shear rams and to correct the positioning of the rig. There were no reported HSE incidents. Total depth of 2648 meters (MD) was reached in the Lower Cretaceous and the total drilling time to total depth was 12.9 days. The ROP at total depth was 5.71 meters per hour using water based muds with weights of ranging from 1200 to 1340 kg/m3. Because of weather delays during the testing operations, the well was temporarily plugged and abandoned and suspended until the following season. When the well was re-entered on September 16th in the fall 1980, it was operated by Petro-Canada Exploration Incorporated. The company took over from Total Eastcan Exploration Limited. The well was re-entered by the Neddrill 2, a second generation, dynamically positioned drillship. While attempting to conduct more testing, problems once again occurred when the initial flow test was sanded off, then during the second attempt to enter, sand prevented access to the packer. Once the packer was milled out, the third attempt to enter was abandoned due to weather. The well was once again suspended and the rig was released on October 19, 1980 after 35 days. In 1980, a total of 35.5 percent of time was attributed to weather delays. 15 icebergs were spotted and two had to be towed away from the well site. Non-productive delays accounted for 8.6 percent of time and were caused when BOP repairs were required and when the back-up computers for the dynamic positioning failed and had to be repaired. In the summer of 1981, Petro-Canada Exploration Incorporated once again re-entered the well to complete testing. A new drillship, the second generation, dynamically positioned Ben Ocean Lancer, was used to conduct the testing. Operations began on June 25, 1981 and completed on July 31, 1981. Wait on weather attributed to 9.1 percent of operation time and there were 391 icebergs spotted with 36 having to be towed away from the rig. The main source of non-productive time was caused by a leak in the hydraulic control system which meant the BOP and riser had to be pulled and run again. Four drill stem tests were conducted during testing. The first two failed and the third flowed 3.5 MMCFPD of gas and 90 BPD oil and the fourth showed 20.07 MMCFPD of gas and 869 BPD oil. After three years of

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operations, the well was plugged and abandoned on July 31, 1981 (Petro-Canada Exploration Incorporated/Total Eastcan Exploration Limited, 1981). Assumptions: The Bjarni well was re-entered twice following the initial drilling operations in 1979. The time spent drilling through cement plugs to re-enter the well is included in other rig operation time and does not affect the drilling performance metrics.

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Well Name: Total Eastcan et al Bjarni O-82

Well Summary

Well Date: July 29, 1979 - July 31, 1981

Gener al Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name Rig Type Current Well Status HSE Incidents

Southern Labrador Hopedale Summer 144 Delineation Petrel (Offshore Belgium SA - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported

Dr illing Data Total Depth m(MD) Total Depth m(TVD) Total Meters Drilled Mud Weight (kg/m3) Drilling Fluid Type

2648 NA 2495 1200 - 1340 Water Based

Time Anal ysis (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 161.4 13.5 18.6 31.2 0.9 34.2 62.9

Per for mance Metr ics Meters/day (m) Meters/day (excluding data acquisition) (m) Days/1000 meters Non-Productive Time Wait on Weather

15.5 19.6 64.7 12.1% 19.3%

Dr illing Metrics ROP while drilling (m/hr) ROP - Tertiary ROP - Cretaceous Days/1000 meters while drilling

M inimum 1.2 1.2 3.3 2.4

Aver age 7.7 11.0 4.9 5.4

Maximum 17.3 17.3 6.8 35.0

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Bjarni O-82 - Time Distribution Drilling Time 15% Other Rig Operations 41%



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Gilbert F-53 Gilbert F-53, operated by Total Eastcan Exploration Limited (1979) and Petro-Canada Exploration Incorporated (1980), was an exploration well drilled during the summer and fall of 1979-1980 in the Saglek basin of the Northern Labrador area. At a water depth of 183.0 meters, Gilbert F-53 was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. The rig arrived on site and the well was spudded on August 28, 1979 and operations were suspended on October 15, 1979 at a depth of 1728 meters (MD). The well was re-entered on July 17, 1980 and reached a new total depth of 3608 meters (MD). Operations were completed on September 12, 1980. The total time of the well was 111.6 days. Wait on weather and non-productive time accounted for 6.6 percent and 11.7 percent of total time. Non-productive time delays were due to rig repairs. As well, there was a half day in wait on ice delays during operations and a total of 51 icebergs were towed away from the rig. There were no reports of HSE or lost time incidents. Total depth of 3608 meters (MD) was reached after 28.9 days in drilling time. The average ROP for the well was 4.9 meters per hour and at the total depth the rate was 0.4 meters per hour. Water based muds with weights ranging from 1070 to 1220 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Precambrian aged intervals during drilling. Upon evaluation, no hydrocarbons were found and the well proved to be a dry hole and was plugged and abandoned (Petro-Canada Exploration Incorporated/Total Eastcan Exploration Limited, 1981).

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Well Name: Total Eastcan et al Gilbert F-53

Well Summary

Well Date: August 28, 1979 - September 12, 1980


Northern Labrador Saglek Summer - Fall 183.0 Exploration Pelican (Somaser - 1972) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3608.0 3581.8 3411.6 1070 - 1220 Water Based


NA 111.6 28.9 12.6 7.3 0.5 7.4 54.9


30.6 32.7 32.7 11.7% 6.6%


Mi ni mum 0.3 1.0 0.3 0.4 1.0

Aver a ge 4.9 10.3 2.4 2.1 8.5

M axi mum 41.6 41.6 41.6 2.5 137.1

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Gilbert F-53 - Time Depth Plot Time (days) 0

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Gilbert F-53 - Time Distribution Drilling Time 26% Other Rig Operations 49%


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Roberval C-02 Roberval C-02, operated by Petro-Canada Exploration, was an exploration well drilled during the summer of 1980 in the Hopedale basin of the Southern Labrador area. At a water depth of 276 meters, Roberval C-02 was drilled using Neddrill’s Neddrill 2, a second generation, dynamically positioned drillship. The rig arrived on site and the well was spudded on July 7, 1980 and operations were completed on September 14, 1980 after 73.5 days. Wait on weather and non-productive time accounted for 3.6 percent and 18.9 percent of total time. The most significant non-productive time delays were due to BOP repairs and fishing operations. As well, there were 1.5 days in wait on ice delays during operations. There were no reports of HSE or lost time incidents. Total depth of 2823.2 meters (MD) was reached after 12.1 days in drilling time. The average ROP for the well was 7.9 meters per hour and at the total depth the rate was 0.8 meters per hour. Water based muds with weights ranging from 1066 to 1186 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Precambrian aged intervals during drilling. Upon evaluation, none of the sandstones found contained hydrocarbon amounts that were of economic benefit. The well was permanently plugged and abandoned (Petro-Canada Exploration Incorporated, 1981). Assumptions: The interval for 2212 meters to 2444 meters was missing from the bit record. The previous interval was being widened with a 12 ¼” bit from 2203 meters to 2212 meters and then drilling was continued to 2444 meters. Based on the 12 ¼” bit in the next interval and the fact that is was mostly the same geological age, the assumption is that the ROP was 3.1 meters per hour for this period as well.

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Well Name: Petro-Canada et al Roberval C-02

Well Summary



Southern Labrador Hopedale Summer 276.0 Exploration Neddrill 2 (Neddrill B.V - 1977) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


2823.2 2814.6 2533.5 1066 - 1186 Water Based


77.0 73.5 15.3 13.8 2.7 0.1 8.0 33.7


34.5 29.0 38.7 18.9% 3.6%


Mi ni mum 0.8 1.9 3.1 0.8 2.3

Aver a ge 6.9 8.1 4.2 1.8 6.0

M ax i mum 17.9 17.9 6.0 3.5 55.3

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Roberval C-02 - Time Distribution Drilling Time 21% Other Rig Operations 46%



Wait on Weather 3%

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South Labrador N-79 Southern Labrador N-79, operated by Chevron Standard Limited, was an exploration well drilled during the summer and fall of 1980 in the Hopedale basin of the Southern Labrador area. At a water depth of 500 meters, Southern Labrador N-79 was drilled using Global Marine Drilling’s Glomar Atlantic, a second generation, dynamically positioned drillship. The rig arrived on site on July 25, 1980 and after 5 unsuccessful attempts to spud the well, it was entered on August 3, 1980. Before arriving on location the rig was delayed for 15 days for repairs. Operations were completed on October 18, 1980 after 102.4 days. Wait on weather and non-productive time accounted for 7.8 percent and 35.4 percent of total time. The most significant non-productive time delays were due to the failed spud attempts, repairs to the dynamic positioning system and general rig repairs. As well, wait on ice caused a delay of 0.6 days of total time. There were no reports of HSE or lost time incidents. Total depth of 3571 meters (MD) was reached after 16.6 days in drilling time. The average ROP for the well was 7.7 meters per hour and at the total depth the rate was 2.1 meters per hour. Water based muds with weights ranging from 1080 to 1400 kg/m3 were used to drill the well. Before logging from total depth could be conducted, the well was suspended due to weather. Tertiary and Cretaceous aged intervals were encountered during drilling. The well was temporarily plugged and abandoned with intentions to return the following summer (Chevron Standard Limited, 1980).

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Well Name: Chevron et al South Labrador N-79

Well Summary

Well Date: July 25, 1980 - October 18, 1980

Gener al Overvi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Labrador Hopedale Summer - Fall 500.0 Exploration Glomar Atlantic (Global Marine Drilling - 1978) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported

Dri ll ing Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3571.0 NA 3056.0 1080 - 1400 Water Based

Time Ana lysis (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 102.4 16.6 35.7 8.0 0.6 3.3 38.2

Perfor ma nce M etr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

29.8 33.5 30.8 35.4% 7.8%

Dri ll ing M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 2.1 2.1 2.6 1.9

Aver age 7.7 8.4 3.4 5.4

Max imum 22.3 22.3 4.0 19.6

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South Labrador N-79 - Time Distribution Drilling Time 16% Other Rig Operations 37%

Data Acquisition 3% Wait on Weather 8%


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Ogmund E-72 Ogmund E-72, operated by Petro-Canada Exploration, was an exploration well drilled during the summer and fall of 1980 in the Hopedale basin of the Northern Labrador area. At a water depth of 156.2 meters, Ogmund E-72 was drilled using Helmer Staubo & Company’s Pelerin, a second generation, dynamically positioned drillship. The rig arrived on site and the well was spudded on August 16, 1980 and operations were completed on October 8, 1980 after 55.5 days. Wait on weather and non-productive time accounted for 1.2 percent and 10.4 percent of total time. The most significant non-productive time delays were due to rig repairs and fishing operations. As well, there were a total of 32 icebergs spotted. Five icebergs had to be towed away causing 1.5 days in wait on ice delays during operations. There were no reports of HSE or lost time incidents. Total depth of 3094 meters (MD) was reached after 17 days in drilling time. The average ROP for the well was 7.1 meters per hour and at the total depth the rate was 0.7 meters per hour. Water based muds with weights ranging from 1080 to 1300 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals during drilling. The well was permanently plugged and abandoned (Petro-Canada Exploration Incorporated, 1981).

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Well Name: Petro Canada et al Ogmund E-72

Well Summary



Northern Labrador Hopedale Summer - Fall 156.2 Exploration Pelerin (Helmer Staubo & Co. - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3094.0 NA 2920.0 1080-1300 Water Based


NA 55.5 17.0 4.2 0.7 1.5 5.9 26.1


52.6 19.0 58.9 10.4% 1.2%


Mi ni mum 0.7 5.2 0.7 1.7

Aver a ge 7.1 9.9 5.6 5.8

M axi mum 24.0 24.0 8.5 62.5

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Ogmund E-72 - Time Distribution


Non Productive Time 10% Wait on Weather Data Acquisition 1% 11%

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North Leif I-05 North Leif I-05, operated by Petro-Canada Exploration Incorporated, was an exploration well drilled during the summer and fall of 1980 and 1981 in the Hopedale basin of the Southern Labrador area. At a water depth of 144 meters, North Leif I-05 was first drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship. When it was re-entered in 1981, Helmer Staubo & Company’s Pelerin, a second generation, dynamically positioned drillship, was used to drill the well. The well was first spudded on September 14, 1980 and the well was drilled to 423 meters before operations were temporarily suspended on September 27, 1980. The well was re-entered on July 5, 1981 and operations continued until October 6, 1981. The total time of well was 111.2 days. Wait on weather and non-productive time accounted for 6.3 percent and 10.2 percent of total time. The most significant non-productive time delays were due to BOP repairs and hole stability issues. As well, 0.4 days of ice delays occurred. A total of 61 icebergs were spotted during operations and 15 had to be towed away from the rig. There were no reports of HSE or lost time incidents. Total depth of 3513 meters (MD) was reached after 20.4 days in drilling time. The average ROP for the well was 6.8 meters per hour and at the total depth the rate was 2.4 meters per hour. Water based muds with weights ranging from 1054 to 1220 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals during drilling. The well was abandoned (Petro-Canada Exploration Incorporated, 1982).

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Well Name: Petro-Canada et al North Leif I-05

Well Summary

Well Date: September 14, 1980 - October 6, 1981 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Southern Labrador Hopedale Summer - Fall 144.0 Exploration Pelican (Somaser - 1972) Pelerin (Offshore Belgium SA - 1976) Both 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3513.0 NA 3357.5 1054 -1220 Water Based


81.0 111.2 20.4 10.9 7.0 0.4 9.7 62.8


30.2 33.1 33.1 10.2% 6.3%


Mi ni mum 1.0 1.9 1.0 1.8

Rig Name (Year Built)

Aver a ge 6.9 10.9 4.0 6.1

M ax i mum 23.6 23.6 7.6 41.7

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North Leif I-05 - Time Distribution Drilling Time 18% Non Productive Time 10% Other Rig Operations 57%


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Cenozoic

Cretaceous

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North Bjarni F-06 North Bjarni F-06, operated by Petro-Canada Exploration Incorporated, was an exploration well drilled during the fall of 1980 and summer and fall of 1981 in the Hopedale basin of the Southern Labrador area where the water depth is 150 meters. North Bjarni was drilled using two rigs. In 1980, the well was drilled using Somaser’s Pelican, a second generation, dynamically positioned drillship and in 1981, Odeco’s Ben Ocean Lancer, also a second generation, dynamically positioned drillship. The well was spudded on September 28, 1980 and operations were suspended on October 7, 1980 after 10 days of operations. A depth of 423 meters (MD) was drilled before suspension but there were no samples or logging at that time. The well was re-entered on August 3, 1981 and operations continued until October 2, 1981. The total time of well was 75 days. There is insufficient data available to state the percentage of time associated with wait on weather or non-productive time. There were no reports of HSE or lost time incidents. Total depth of 2812 meters (MD) was reached after 10.4 days in drilling time. The average rate of penetration for the well was 10.7 meters per hour and at the total depth the rate was 12.1 meters per hour. Water based muds with weights ranging from 1054.5 to 1318.1 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals during drilling. The well was plugged and abandoned (Petro-Canada Incorporated, 1981). Assumptions: There was no time distribution chart in the end of well report for North Bjarni re-entry. The drilling data can be calculated based on bit records but non-productive time, wait on weather, data acquisition and other operations are unaccounted for in this report.

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Well Name: Petro-Canada et al North Bjarni F-06

Well Summary




Southern Labrador Hopedale Fall - Summer 150.0 Exploration Pelican (Somaser - 1972) Ben Ocean Lancer (Odeco - 1977) Both 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


2812.0 NA 2650.3 1054.5 - 1318.1 Water Based


NA 75.0 10.4 NA NA NA NA NA


35.3 28.3 NA NA NA


Mi ni mum 0.7 16.9 1.6 1.7

Rig Name (Year Built)

Aver a ge 10.6 19.5 11.5 3.9

M ax i mum 24.7 24.7 19.3 59.5

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*No Time Distribution Chart Available

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Rut H-11 Rut H-11, operated by Petro-Canada Exploration Incorporated, was an exploration well drilled over a three year period from 1981 to 1983 in the Saglek basin of the Northern Labrador area. At a water depth of 124 meters, Rut H-11 was drilled using Pacnorse 1, a second generation, dynamically positioned drillship, operated by Santa Fe Drilling Company. Operations began in the summer of 1981 when the well was spudded on July 14, 1981. Operations were suspended on September 27, 1981 due to technical difficulties with the BOP. At this point, the well had reached a depth of 3527 meters (MD). The well was re-entered on July 24, 1982 and operations commenced to drill a sidetrack at 2379 meters to a depth of 4093 meters (MD) on October 12, 1982 when the well was once again suspended. The final re-entry to the well took place on August 4, 1983 and a total depth of 4470 meters (MD) was reached. The well was evaluated then plugged and abandoned on September 13, 1983. The total time of well over these three periods was 211.6 days. Wait on weather and non-productive time accounted for 6.4 percent and 30.5 percent of total time. The most significant non-productive time delays were due to fishing operations and hole stability issues. As well, there were 13.5 days in wait on ice delays during operations. A total of 835 icebergs were spotted during operations with 88 having to be towed away from the rig. There were no reports of HSE or lost time incidents during operations. A total depth of 4470 meters (MD) was reached after 35.2 days in drilling time. This includes the additional meters drilled in the sidetrack operations. The average ROP for the well was 6.5 meters per hour and at the total depth the rate was 2.6 meters per hour. Water based muds with weights ranging from 1060 to 1582 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals during drilling. Upon initial evaluation, there were no significant shows encountered. The well was plugged and abandoned (Petro-Canada Exploration Incorporated, 1983). Assumptions: Time vs. depth curve shows sidetrack operations. Moving time is not included in the curve.

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Well Name: Petro-Canada et al Rut H-11

Well Summary



Northern Labrador Saglek Summer - Fall 124.0 Exploration and Sidetrack Pacnorse 1 (Sante Fe Drilling - 1979) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


4474.0 NA 5511.0 1060 - 1582 Water Based


NA 211.6 35.2 51.1 13.6 13.5 5.8 92.5


26.0 38.4 26.8 30.5% 6.4%


Mi ni mum 0.2 0.8 1.5 1.2

Aver a ge 6.5 7.2 3.2 6.4

M axi mum 35.6 35.6 5.0 182.3

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Rut H-11 - Time Distribution Drilling Time 17% Other Rig Operations 44%

Non Productive Time 30% Data Acquisition Wait on Weather 3% 6%

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Corte Real P-85 The Corte Real P-85 well, operated by Petro-Canada on behalf of its partners, was an exploration well drilled over four summer periods from 1981 to 1984. It was drilled on the Hopedale Saddle (now known to be Chidley basin) of the Labrador South area at a water depth of 438 meters. The well was drilled using several different offshore drill rigs over several years. The well was spudded on October 2, 1981 with the Pacnorse 1, a dynamically positioned, drillship built in 1979 and operated by the drilling contractor – Sante Fe Drilling Company. This first drilling period was temporarily suspended on October 13, 1981 and the rig was released after reaching a total depth of 770 meters. The well was re-entered on July 9, 1982 using the Neddrill 2, a dynamically positioned, drillship owned by Neddrill BV. The well was once again temporarily suspended and the rig was released on October 14, 1982 after reaching a new total depth of 3946 meters in the Kenamu formation. The well was re-entered with the Neddrill 2 on July 13, 1983 and drilled to a depth of 4551 meters. The pipe became stuck in the hole while reaming and twisted off at 4380 meters. The well was sidetracked from 4040 meters and the pipe became stuck in the hole at 4395 meters. A backoff operation was completed successfully and the fish was later tagged at 4327.5 meters. The well was suspended and the rig released on October 9, 1983. On August 3, 1984, the well was re-entered for abandonment operations by the Neddrill 2 and the rig was released on August 9, 1984. The well took a total of 218 days. Wait on weather and non-productive time accounted for 13.8 percent and 29.6 percent of total time. The most significant non-productive time delays were due to hole instability and fishing operations. As well, there were 7.6 days in wait on iceberg delays during operations. There were zero reports of HSE or lost time incidents. There was 39.9 days of drilling time and a total of 4456 meters drilled including the sidetrack around the fish. The average rate of penetration for the well was 4.7 meters per hour. Water based muds with weights ranging from 1030 to 1560 kg/m3 were used to drill the well. The expected total depth was 5300 meters but was never reached due to hole stability issues. Evaluation of the Kenamu Formation in 1982 did not show any reservoir development. The top of Kenamu was found at 3379 meters. Total expected depth was never reached due to drilling and hole condition problems and hence no further reservoir development was found in the well. The well was permanently plugged and abandoned (Petro-Canada Incorporated, 1984). Assumptions: The bit record report has a total drilling time of 957.5 hours while the well time summaries record drill time as 907.5 hours. We will use the bit record report for total meters drilled on this well. Due to the sidetrack around the fish at 4327.5 meters, additional meters were drilled from 4040 meters to 4395 meters. Totals meters drilled in the well were 4456 meters.

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Well Name: Petro-Canada et al Corte Real P-85

Well Summary

Well Date: October 2, 1981 - August 9, 1984


Southern Labrador Hopedale Saddle (Chidley) Summer 438.0 Exploration Neddrill 2 (Neddrill BV, 1979) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


4551.0 NA 4456.0 1030-1560 Water Based


NA 218.0 39.9 57.0 30.0 7.6 3.3 80.1


20.4 48.9 20.8 29.7% 13.8%


Mi ni mum 0.9 1.5 1.2

Aver a ge 4.7 2.5 9.0

M axi mum 33.7 3.4 49.2

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Corte Real P-85 - Time Distribution Drilling Time 18% Other Rig Operations 37%

Data Acquisition 1%


Wait on Weather 14%

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199


Pothurst P-19 Pothurst P-19, operated by Petro-Canada Exploration Limited, was an exploration well drilled during the summer and fall of 1982 and 1983 in the Saglek basin of the Northern Labrador area. At a water depth of 193 meters, Pothurst was drilled using Helmer Staubo’s Pelerin, a second generation, dynamically positioned drillship. The well was spudded on July 11, 1982 and operations were suspended on October 22, 1982 after drilling to a depth of 3843 meters (MD). The well was re-entered on July 24, 1983 and sidetracked from a depth of 3610 meters (MD) to total depth of 3992 meters (MD). The total time of well over these two periods was 187 days. Wait on weather and non-productive time accounted for 8.1 percent and 41.7 percent of total time. Non -productive delays totaled 89 days with major delays due to spud issues, fishing operations, BOP repairs, hole stability and well control issues. As well, there were 41.7 days in wait on ice delays during operations. There were 276 icebergs spotted and 61 had to be towed away from the rig. There were no reports of HSE or lost time incidents. Total depth of 3992 meters (MD) was reached after 25 days in drilling time. The average ROP for the well was 7 meters per hour and at the total depth the rate was 3.3 meters per hour. Water based muds with weights ranging from 1040 to 1980 kg/m3 were used to drill the well. The well encountered Tertiary aged intervals during drilling. The well was plugged and abandoned (Petro-Canada Incorporated, 1983). Assumptions: A sidetrack was completed from 3591 meters (MD) to 3992 meters (MD). This is included in total meters drilled and total drilling time.

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Well Name: Petro Canada et al Pothurst P-19

Well Summary



Northern Labrador Saglek Summer - Fall 193.0 Exploration and Sidetrack Pelerin (Helmer Staubo & Co. - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3992.0 NA 3787.0 1040 -1450 Water Based


NA 187.1 24.7 47.4 15.2 41.7 6.7 51.4


20.2 49.4 21.0 47.6% 8.1%


Mi ni mum 0.6 0.6 3.1

Aver a ge 6.8 6.8 6.1

M axi mum 14.5 14.5 67.7

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Pothurst P-19 - Time Distribution Other Rig Operations 27%


Drilling Time 13%


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203


South Hopedale L-39 South Hopedale L-39, operated by Canterra Energy Limited, was an exploration well drilled during the summer of 1983 in the Hopedale basin of the Southern Labrador area. At a water depth of 580 meters, South Hopedale was drilled using Offshore Belgium SA’s Petrel, a second generation, dynamically positioned drillship. The well was spudded on July 13, 1983 and operations were completed on August 17 after 36 days. Wait on weather and non-productive time accounted for 0.1 percent and 15.4 percent of total time. As well, there were 2.3 days in wait on ice delays during operations. There were no major difficulties on this well. The majority of non-productive time was due to wait on ice or other waiting time. There was no indication as to what caused the other waiting time. Also, there were no reports of HSE or lost time incidents. Total depth of 2364 meters (MD) was reached after 8.5 days in drilling time. The average ROP for the well was 8.7 meters per hour and at the total depth the rate was 3.7 meters per hour. Water based muds with weights ranging from 1040 to 1160 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous, Paleozoic and Precambrian aged intervals during drilling. The well was plugged and abandoned (Canterra Energy Limited, 1983). Assumptions: The intervals on the bit record included a significant amount of reaming time. The intervals did not line up so the drilling time and meters drilled were recalculated for each interval based on the ending depth of the previous interval.

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Well Name: Canterra et al South Hopedale L-39

Well Summary



Southern Labrador Hopedale Summer 580.0 Exploration Petrel (Offshore Belgium SA - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


2364.0 NA 1772.0 1040 - 1160 Water Based


55.0 43.4 8.5 4.4 0.0 2.3 3.8 24.3


40.9 24.5 44.8 15.4% 0.1%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Paleozoic (m/hr) ROP - Precambrian (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 2.2 7.2 10.9 3.4 3.4 1.8

Aver a ge 8.7 16.9 12.0 7.0 3.5 4.8

M ax i mum 17.1 17.1 14.9 16.0 3.7 16.7

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South Hopedale L-39 - Time Distribution Drilling Time 20%



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207


Appendix B: Individual Well Summary Reports – Eastern Newfoundland Area

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Appendix B: Table of Contents Bonavista C-99 ................................................................................................................................... 210 Dominion O-23 ................................................................................................................................... 214 Cumberland B-55................................................................................................................................ 218 Blue H-28 ........................................................................................................................................... 222 Gabriel C-60 ....................................................................................................................................... 226 Sheridan J-87 ...................................................................................................................................... 230 Bonanza M-71 .................................................................................................................................... 234 Linnet E-63 ......................................................................................................................................... 238 North Dana I-43 .................................................................................................................................. 241 Panther P-52 ...................................................................................................................................... 244 Baccalieu I-78 ..................................................................................................................................... 248 Baie Verte J-57 ................................................................................................................................... 251 Lancaster G-70 ................................................................................................................................... 255 Kyle L-11............................................................................................................................................. 259 Golconda C-64 .................................................................................................................................... 262 Mizzen L-11 ........................................................................................................................................ 266 Tuckamore B-27 ................................................................................................................................. 270 Great Barasway F-66 .......................................................................................................................... 274 Mizzen O-16 ....................................................................................................................................... 278 Lona O-55 ........................................................................................................................................... 282 Mizzen F-09 ........................................................................................................................................ 286 Harpoon O-85..................................................................................................................................... 290 Margaree A-49 ................................................................................................................................... 294 Bay Du Nord C-78 ............................................................................................................................... 298 Bay Du Nord C-78z.............................................................................................................................. 302

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Bonavista C-99 Bonavista C-99, operated by BP Exploration Canada Limited, was an exploration well drilled during the summer and fall of 1974 and the summer of 1975 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 329.2 meters, Bonavista C-99 was drilled using Nordic Offshore Drilling Company’s Havdrill, a second generation, dynamically positioned drillship. The well was spudded on June 26, 1974 and on October 4, 1974, after 100 days of operations, the well was suspended until the following year. Drilling operations were suspended on September 27, 1974 but while attempting to release the riser, the 16” telescopic joint riser tensioner swivel ring failed and as a result, the riser could only be recovered down to the 16” x 24” adapter joint. The recovery process was delayed until the following year when operations recommenced on May 31, 1975 and completed on August 11, 1975. The total time of the well over the two seasons was 189.7 days. Wait on weather and non-productive time accounted for 21.1 percent and 9.1 percent of total time. The most significant nonproductive time delays were due to the technical issues with the subsea equipment and the recovery operations of the stab assembly and BOP stack. A total of 16.1 days were spent on fishing operations. When a depth of 3685 meters (MD) was reached, fishing operations for stuck pipe were unsuccessful and the well had to be sidetracked from 2912 meters (MD). There were reports of ice during operations, specifically when the well was first spudded and at a depth of 1228 meters (MD). However, in the end of well report, the ice delays are grouped with wait on weather delays so it is unknown how many days were delayed specifically because of ice. There was no reporting on HSE or lost time incidents. Total depth of 3778.9 meters (MD) was reached after 26.1 days in total drilling time. The average ROP for the well was 6.7 meters per hour and at the total depth the rate was 1.0 meters per hour. Water based muds with weights ranging from 1054.5 to 1953.2 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Precambrian aged intervals during drilling. At total depth, drill stem tests were conducted and the well was plugged and abandoned (BP Exploration Canada Limited, 1976). Assumptions: In the first operational season, the well was drilled to a depth of 3685m but needed to be sidetracked at 2912.1 meters and continued to a total depth of 3147.1 meters for that year. Upon re-entry, the well was drilled from the sidetrack to a total depth of 3778.9 meters. This means that the meterage from 2912.1 meters to 3685 meters (772.9 meters) is accounted for twice. For this reason total meters drilled appears to be significantly higher than total depth. Since this is considered a sidetrack, all meters are included.

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Well Name: BP Colombia Bonavista C-99

Well Summary

Well Date: June 26, 1974 - August 11, 1975


Eastern Newfoundland Orphan Summer - Fall 329.2 Exploration Havdrill (Nordic Offshore Drilling - 1973) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported


3778.9 NA 4210.5 1054.5 - 1953.2 Water Based


NA 189.7 26.1 40.1 17.2 0.0 6.8 99.5


22.2 45.0 23.0 21.1% 9.1%


Mi ni mum 0.3 0.9 3.1 1.1

Aver a ge 6.7 9.5 3.1 6.2

M axi mum 37.8 28.0 3.1 148.1

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Bonavista C-99 - Time Distribution Drilling Time 14%

Non Productive Time 21% Other Rig Operations 52%


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213


Dominion O-23 Dominion O-23, operated by Mobil Oil Canada Limited, was an exploration well drilled during the summer and fall of 1974 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 161.5 meters, Dominion O-23 was drilled using Sedco International’s Sedco J, a first generation, semisubmersible rig. The well was spudded on August 25, 1974 and operations were completed on October 19, 1974 after 66.3 days. Wait on weather and non-productive time accounted for 0.5 percent and 1.0 percent of total time. Non-productive time was due to rig repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3997.8 meters (MD) was reached after 17.1 days in drilling time. The average ROP for the well was 9.2 meters per hour and at the total depth the rate was 2.9 meters per hour. Water based muds with weights ranging from 1066.5 to 1629.6 kg/m3 were used to drill the well. The well penetrated Tertiary and Cretaceous aged intervals but there were no significant hydrocarbons found and the well was plugged and abandoned (Mobil Oil Canada Limited, 1976).

214


Well Name: Mobil Gulf Dominion O-23

Well Summary



Eastern Newfoundland Orphan Summer - Fall 161.5 Exploration Sedco J (Sedco International - 1972) 1st Gen, Semi-submersible Plugged and Abandoned None Reported


3997.8 NA 3806.3 1066.5 - 1629.6 Water Based


NA 66.3 17.1 0.7 0.3 0.0 6.8 41.4


57.4 17.4 63.9 1.0% 0.5%


Mi ni mum 2.1 11.6 2.1 0.8

Aver a ge 9.2 19.4 3.4 4.5

M axi mum 50.7 50.7 5.3 19.8

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Eastern NL Area Maximum (m) Dominion O-23

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Dominion O-23 - Time Distribution Drilling Time 26% Non Productive Time 1% Wait on Weather 1% Other Rig Operations 62%


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Cumberland B-55 Cumberland B-55, operated by Mobil Oil Canada Limited, was an exploration well drilled during the summer and fall of 1975 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 194.8 meters, Cumberland B-55 was drilled using Sedco International’s Sedco J, a first generation, semisubmersible with mooring capabilities. The well was spudded on August 9, 1975 and operations were completed on October 19, 1975 after 71 days. Wait on weather and non-productive time accounted for 3.3 percent and 5.3 percent of total time. Non- productive time delays were caused by rig repairs and fishing operations. As well, there were no reports of wait on ice or HSE or lost time incidents during operations. Total depth of 4136.4 meters (MD) was reached after 24 days in drilling time. The average rate of penetration for the well was 6.8 meters per hour and at the total depth the rate was 2.5 meters per hour. Water based muds with weights ranging from 1054.5 to 1665.6 kg/m3 were used to drill the well. The well encountered Tertiary, Lower Cretaceous and Paleozoic aged intervals. Evaluation of these intervals did not show any hydrocarbon potential so the well was plugged and abandoned (Mobil Oil Canada Limited, 1976).

218


Well Name: Mobil Gulf Imperial Cumberland B-55

Well Summary



Eastern Newfoundland Orphan Summer - Fall 194.8 Exploration Sedco J (Sedco International - 1972) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4136.4 NA 3911.8 1054.5 - 1665.6 Water Based


63.0 83.1 24.0 2.7 4.4 0.0 7.9 44.0


47.1 21.2 52.1 3.3% 5.3%


Mi ni mum 1.5 1.8 2.7 1.5 1.3

Aver a ge 6.8 8.6 3.9 2.3 6.1

M axi mum 31.7 31.7 4.9 2.9 28.0

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Eastern NL Area Maximum (m) Cumberland B-55

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Cumberland B-55 - Time Distribution

Drilling Time 29%



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221


Blue H-28 Blue H-28, operated by Texaco Canada Resources Limited, was an exploratory well drilled during the spring and summer of 1979 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 1486.2 meters, Blue H-28 was drilled using Offshore International SA’s Discoverer Seven Seas, a second generation, dynamically positioned drillship and was Newfoundland’s first deepwater well. The well was spudded on April 28, 1979 and operations were completed on August 25, 1979 after 123 days. Wait on weather and non-productive time accounted for 21.2 percent and 1.9 percent of total time. The most significant non-productive time delays were due to hole problems and issues running the BOP stack. There were no reports of ice delays or HSE or lost time incidents. Total depth of 6103 meters (MD) was reached after 44.8 days in drilling time. The average ROP for the well was 4.3 meters per hour and at the total depth the rate was 1.3 meters per hour. Water based muds with weights ranging from 1066 to 1605 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Paleozoic aged intervals. Upon evaluation, no hydrocarbons were found and the well was plugged and abandoned (Texaco Canada Resources Limited, 1980).

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Well Name: Texaco Shell et al Blue H-28

Well Summary

Well Date: April 28, 1979 - August 25, 1979

Genera l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Eastern Newfoundland Orphan Spring - Summer 1486.2 Exploration Discoverer Seven Seas (Offshore International SA - 1976) 2nd Gen, Drillship, DP Plugged and Abandoned None Reported

Dri l li ng Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

6103.0 6000.0 4602.0 1066 - 1605 Water Based

Ti me Ana lysi s (D ays) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 123.6 44.8 26.3 2.3 0.0 5.7 44.6

Per forma nce M etr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

37.2 26.9 39.0 21.2% 1.9%

Dri l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Paleozoic (m/hr) Days/1000 meters while drilling (days)

M i ni mum 0.4 2.0 0.5 0.4 1.6


Avera ge 4.3 9.1 3.4 1.4 9.7

M ax imum 26.5 20.9 5.4 2.1 114.6

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Blue H-28 - Time Distribution


Drilling Time 36%



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Gabriel C-60 Gabriel C-60, operated by Esso Resources Canada, was an exploration well drilled during the spring, summer and fall of 1979 in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1108.6 meters, Gabriel C-60 was drilled using Sedco International’s Sedco 709, a second generation, dynamically positioned semi-submersible rig. Gabriel C-60 was the first well drilled in the Flemish Pass Basin. The rig arrived on location on May 1, 1979 and operations were suspended on July 1, 1979 until October 4, 1979. Operations on the well were completed on December 18, 1979. Wait on weather and nonproductive time accounted for 0.5 percent and 20.1 percent of total time. The most significant nonproductive time delays were due to fishing for stuck drill pipe and subsea equipment repairs, specifically pulling the BOP stack to repair a connector pilot leak. As well, there were no icebergs spotted during operations. There were 6 reports of lost time incidents for this well. Total depth of 5171.5 meters (MD) was reached after 43 days in drilling time. The average ROP for the well was 3.9 meters per hour and at the total depth the rate was 1.1 meters per hour. Water based muds with weights ranging from 1054.5 to 1342 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered while drilling the well and it has been plugged and abandoned (Esso Resources Canada Limited, 1980).

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Well Name: Esso Voyager Gabriel C-60

Well Summary

Well Date: May 1, 1979 - December 18, 1979


Eastern Newfoundland Flemish Pass Spring - Summer - Fall 1108.6 Exploration Sedco 709 (Sedco International - 1977) 2nd Gen, Semi-submersible, DP Plugged and Abandoned 6


5171.5 NA 4037.7 1054.5 - 1342 Water Based


82.0 136.7 43.0 27.4 0.6 0.0 8.3 57.3


29.5 33.8 31.5 20.1% 0.5%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 1.1 1.8 2.2 1.1 0.3

Aver a ge 3.9 14.5 3.5 2.2 10.6

M axi mum 124.6 124.6 9.2 3.3 38.2

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Gabriel C-60 - Time Distribution

Drilling Time 31%


Data Acquisition Wait on Weather 6% 1%


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Sheridan J-87 Sheridan J-87, operated by Mobil Oil Canada Limited, was an exploration well drilled during the summer and fall of 1981 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 215.8 meters, Sheridan J-87 was drilled using Odeco’s Ocean Ranger, a second generation, moored semisubmersible. The well was spudded on June 16, 1981 and operations were completed on November 22, 1981 after 158.9 days. Wait on weather and non-productive time accounted for 1.2 percent and 13.0 percent of total time. The most significant non-productive time delays were due to BOP and rig repairs. There were no reports of wait on ice delays or HSE or lost time incidents during operations. Total depth of 5486.4 meters (MD) was reached after 45.1 days in drilling time. The average ROP for the well was 4.8 meters per hour and at the total depth the rate was 1.1 meters per hour. Water based muds with weights ranging from 1078.4 to 1258.2 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Paleozoic aged intervals but there were no significant hydrocarbons found and the well was plugged and abandoned (Mobil Oil Canada Limited, 1982). Assumptions: Sheridan J-87 was originally designed as Sheridan J-87A but unsuccessful spud attempts made it necessary to move to a new location. The time spent on Sheridan J-87A is not considered in the total time of Sheridan J-87.

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Well Name: Mobil et al Sheridan J-87

Well Summary

Well Date: June 16, 1981 - November 22, 1981

General Overvi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Eastern Newfoundland Orphan Summer - Fall 215.8 Exploration Ocean Ranger (Odeco - 1976) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dril li ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

5486.4 NA 5241.6 1078.4 - 1258.2 Water Based

Time Analysis (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 158.9 45.1 20.6 1.9 0.0 10.1 81.2

Performance Metri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

33.0 30.3 35.2 13.0% 1.2%

Dril li ng Metri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Paleozoic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.2 1.2 2.0 0.2 1.4

Average 4.8 6.9 2.2 1.9 8.8

M axi mum 29.0 29.0 2.4 2.4 239.2

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Sheridan J-87 - Time Distribution

Drilling Time 28%

Other Rig Operations 51% Non Productive Time 13% Wait on Weather 1% Data Acquisition 7%

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Bonanza M-71 Bonanza M-71, operated by Mobil Oil Canada Limited, was an exploration well drilled during the summer and fall of 1982 and winter and spring of 1983 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 194 meters, Bonanza M-71 was drilled using Zapata Offshore Drilling Company’s Zapata Ugland, a second generation, moored semi-submersible rig. The well was spudded on May 14, 1982 and operations were completed on February 3, 1983. Bonanza M-71 was temporarily suspended on September 14, 1982 until October 13, 1982 to bring the rig off site to Marystown, NL for repairs. The total time of well was 236 days. Wait on weather and non-productive time accounted for 4.4 percent and 5.4 percent of total time. The most significant non-productive time delays were due to fishing operations. There were no reports of ice delays or HSE or lost time incidents. Total depth of 5295 meters (MD) was reached after 43.1 days in drilling time. The average ROP for the well was 4.9 meters per hour and at the total depth the rate was 1.3 meters per hour. Water based muds were used to drill the well and Tertiary, Cretaceous and Jurassic aged intervals were encountered during drilling. The well was plugged and abandoned (Mobil Oil Canada Limited, 1985).

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Well Name: Mobil et al Bonanza M-71

Well Summary

Well Date: May 14, 1982 - February 4, 1983


Eastern Newfoundland Orphan Spring - Summer - Fall - Winter 194.0 Exploration Zapata Ugland (Zapata Offshore - 1974) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


5295.0 NA 5071.3 1060 - 1780 Water Based


243.0 236.0 43.1 12.7 10.5 0.0 14.0 155.7


21.5 46.5 22.8 5.4% 4.4%


Mi ni mum 0.1 2.3 0.1 0.4 2.5

Aver a ge 4.9 7.4 2.7 1.6 8.5

M axi mum 16.5 16.5 4.1 2.4 410.1

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Eastern NL Area Maximum (m) Bonanza M-71

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Bonanza M-71 - Time Distribution Drilling Time 18% Non Productive Time 5% Wait on Weather 5% Other Rig Operations 66%

Data Acquisition 6%

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Linnet E-63 Linnet E-63, operated by Mobil Oil Canada Limited, was an exploration well drilled during the summer and fall of 1982 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 160 meters, Linnet E-63 was drilled using Sedco International’s Sedco 706, a second generation, moored semisubmersible rig. The well was spudded on July 18, 1982 and operations completed on November 14, 1982 after 98.8 days. Wait on weather and non-productive time accounted for 3.5 percent and 20.6 percent of total time. The most significant non-productive time delays were due to issues landing the BOP stack and delays caused by unsuccessful fishing and sidetracking attempts when the turbine shaft sheared off at 3918 meters (MD). There were no reports of wait on ice delays or HSE or lost time incidents during operations. Total depth of 4520 meters (MD) was reached after 44.1 days in drilling time. The average ROP for the well was 4.3 meters per hour and at the total depth the rate was 2.8 meters per hour. Water based muds with weights ranging from 1066.4 to 1174.2 kg/m3 were used to drill the well. Tertiary, Cretaceous, Jurassic and Paleozoic aged intervals were encountered but no hydrocarbons were found. The well was plugged and abandoned (Mobil Oil Canada Limited, 1983). Assumptions: Linnet E-63 was drilled to a total depth of 4520 meters (MD). At a depth of 3918 meters, the turbine shaft sheared off leaving the bit at the bottom of the hole. Fishing attempts were unsuccessful so sidetrack operations began. Attempts to sidetrack were initially unsuccessful at 3847.5 meters (MD) so the hole was plugged up to 3711.9 meters (MD) and sidetracked from this depth to total depth of 4520 meters. Only the meters drilled from the successful sidetrack are included in total meters drilled. There was insufficient data to complete a time depth curve for this well.

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Well Name: Mobil et al Linnet E-63

Well Summary

Well Date: July 18, 1982 - November 14, 1982


Eastern Newfoundland Orphan Summer - Fall 160.0 Exploration Sedco 706 (Sedco International - 1976) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4520.2 4518.7 4551.3 1066.4 - 1174.2 Water Based


NA 98.8 44.1 20.4 3.5 0.0 5.4 25.4


46.1 21.7 48.8 20.6% 3.5%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Paleozoic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.6 4.8 0.6 0.9 1.0 2.0

Aver a ge 4.3 8.8 2.7 2.3 2.3 9.7

M ax i mum 21.2 15.7 4.9 2.6 2.8 66.0

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*No Time Depth Plot

Linnet E-63 - Time Distribution Other Rig Operations 26% Drilling Time 45%

Data Acquisition 5% Wait on Weather 3% Non Productive Time 21%

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North Dana I-43 North Dana I-43, operated by Mobil Oil Canada Limited, was an exploration well drilled during the fall of 1982 until the winter of 1984 in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 220.8 meters, North Dana I-43 was drilled using Sedco International’s Sedco 706, a second generation, moored semi-submersible rig. Well operations began on November 14, 1982 and six spuds were required before drilling could commence. The final spud took place on December 13, 1982 and the well was completed on January 17, 1984 after 428.35 days. Wait on weather and non-productive time accounted for 30.0 percent and 5.0 percent of total time. Wait on weather caused 128.35 days of delays and wait on ice is grouped with this total but it was not clear how many days were attributed specifically to wait on ice. Non-productive events arose from hole issues and subsequent sidetracking measures. There were no reports of HSE or lost time incidents for this well. Total depth of 5303.3 meters (MD) was reached after 122.2 days in drilling time. The average rate of penetration for the well was 1.7 meters per hour and water based muds with weights ranging from 1042.5 to 1869.3 kg/m3 were used. The well encountered Tertiary, Cretaceous and Jurassic aged intervals. Three drill stem tests were conducted in the Jurassic intervals with one indicating the presence of gas and condensate. The well has been plugged and abandoned. (Mobil Oil Canada Limited, 1984). Assumptions: There was no bit record in the end of well report for North Dana I-43, therefore, not all drilling metrics have been calculated. Drilling time is taken from the stated drill time in the well report. A rate of penetration while drilling and days per 1000 meters while drilling has been calculated based on the drill time given and the total number of meters drilled. As well, without the bit record, rate of penetration for each formation encountered could not be calculated.

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Well Name: Mobil et al North Dana I-43

Well Summary

Well Date: November 14, 1982 - January 17, 1984

Gener a l Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Eastern Newfoundland Flemish Pass All seasons 220.8 Exploration Sedco 706 (Sedco International - 1976) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dr illing Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

5303.3 5264.5 5055.1 1042.5- 1869.3 Water Based

Time Ana lysis (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

191.0 428.3 122.2 21.4 128.4 0.0 32.2 124.2

Per for ma nce Metr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

11.8 84.7 12.8 5.0% 30.0%

Dr illing M etr ics ROP while drilling (m/hr) Days/1000 meters while drilling (days)

Minimum NA NA

Aver a ge 1.7 24.2

M aximum NA NA

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North Dana I-43 - Time Distribution Other Rig Operations 29%

Drilling Time 29%


Data Acquisition 7%

Wait on Weather 30%

243


Panther P-52 Panther P-52, operated by Husky Oil Operations Limited, was an exploration well drilled during the winter of 1985 and fall and winter of 1986 in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 191.4 meters, Panther P-52 was first drilled using Sedco International’s Sedco 706, a second generation, moored semi-submersible rig. Upon re-entry in the fall of 1986, it was drilled using Bow Valley Offshore’s Bow Drill 3, a third generation, moored semi-submersible rig. The well was spudded on January 10, 1985 and operations were suspended on January 25, 1985 at a depth of 925.1 meters (MD). The well was re-entered on November 5, 1985 and operations were completed on January 30, 1986 with a total time of well of 103 days. Wait on weather and nonproductive time accounted for 12.5 percent and 4 percent of total time. Wait on weather was the largest source of delay causing 12.9 days of downtime and non-productive time during operations were attributed to rig repairs, subsea equipment repairs and fishing operations. There were no reports of wait on ice delays or HSE or lost time incidents during operations. Total depth of 4203.2 meters (MD) was reached after 37.2 days in drilling time. The average ROP for the well was 4.5 meters per hour and at the total depth the rate was 1.4 meters per hour. Water based muds with weights ranging from 1183 to 1379 kg/m3 were used to drill the well. The well was drilled through Tertiary, Cretaceous and Jurassic aged intervals. Upon evaluation, the hydrocarbons found in the reservoir were not significant enough to warrant a drill stem test and the well was plugged and abandoned (Husky Oil Operations Limited, 1986).

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Well Name: Husky-Bow Valley et al Panther P-52

Well Summary

Well Date: January 10, 1985 - January 30, 1986 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built)


Eastern Newfoundland Flemish Pass Winter - Fall - Winter 191.4 Exploration Sedco 706 (Sedco International - 1976) Bow Drill 3 (Bow Valley Husky Ltd - 1984) 2nd Gen, Semi-submersible, Moored 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4203.2 NA 3984.2 1183 - 1379 Water Based


103.0 103.0 37.2 4.1 12.9 0.0 7.5 41.3


38.7 25.9 41.7 4.0% 12.5%


Mi ni mum 1.2 4.3 1.6 1.2 1.6

Rig Type

Aver a ge 4.5 10.2 2.8 2.3 9.3

M ax i mum 25.3 25.3 7.9 3.4 35.6

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Panther P-52 - Time Distribution

Drilling Time 36%


Data Acquisition 7%

Non Productive Time 4% Wait on Weather 13%

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247


Baccalieu I-78 Baccalieu I-78, operated by Esso Resources Canada Limited, was an exploration well drilled during the summer of 1985 from a water depth of 1092.8 meters to a total depth of 5135 meters (MD) in the Flemish Pass basin of the Eastern Newfoundland area. Transocean’s Sedco 709, a second generation, dynamically positioned semi-submersible rig was used to drill the well. The well was spudded on May 15, 1985 and completed on September 14, 1985 after 122.5 days. Data regarding the original planned time of the well is not available, however, non-productive time, wait on weather and wait on ice accounted for 8.5 percent, 1.7 percent and 2.8 percent respectively. There were no reported HSE or quality incidents for Baccalieu I-78. At the time, a major concern in planning this well was the risk of hole instability. This had previously caused a nearby well, Gabriel C-60, to be plugged and abandoned without being able to retrieve useful evaluation data of the lower formations. In order to prepare for possible hole instability, Baccalieu I-78 was the first well in offshore Newfoundland to use a low toxicity oil-base drilling fluid The total drill time for this well was 47.5 days and the mud weights ranged from 1055 to 1150 kg/m3. The well was drilled through Tertiary, Cretaceous and Jurassic aged intervals. At this time, there is insufficient data available to assess the ROP at the base of the Jurassic interval. However, the average ROP over the entire well was 3.5 meters per hour (Esso Resources Canada Limited, 1985). Assumptions: Wait on ice is included with non-productive time. There were conflicting reports of the overall time spent drilling. In this case the drilling time was calculated based on the time distribution drilling report. There was insufficient data to assess the ROP or time spent at each drilling interval. Therefore, one average ROP was calculated for the entire well (total meters/total drilling hours).

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Name: Esso Parex et al Baccalieu I-78

Well Summary

Well Date: May 15, 1985 - September 14, 1985 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Flemish Pass Summer 1092.8 Exploration Sedco 709 (Sedco International - 1977) 2nd Gen, Semi-submersible, DP Plugged and Abandoned None Reported


5135.0 NA 4018.5 1055 - 1150 Synthetic Based


NA 122.6 47.5 10.4 2.0 3.4 17.2 42.0


33.0 30.3 38.4 8.5% 4.5%


Mi ni mum NA NA NA NA NA

Aver a ge 3.5 NA 3.5 3.5 11.8

M axi mum NA NA NA NA NA

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Drilling Time 39%

Wait on Weather 2%


250


Baie Verte J-57 Baie Verte J-57, operated by BP Resources Canada Limited, was an exploration well drilled during the summer and fall of 1985 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 303 meters, Baie Verte J-57 was drilled using Bow Valley Offshore Drilling’s Bow Drill One, a second generation, moored semi-submersible rig. The Bow Drill One was on site for 10 days before the well was spudded on July 10, 1985. This was due to ice and weather delays. Operations were completed on October 16, 1985 after 100 days of operations. Wait on weather and non-productive time accounted for 22.3 percent and 7.4 percent of total time. Wait on weather was the most significant delay causing 24.6 days of downtime. Wait on ice was grouped with wait on weather in the end of well report so there is no specific detail as to how much of the wait on weather time was due to wait on ice. Additionally, there were no reports of HSE or lost time incidents. Total depth of 4911 meters (MD) was reached after 26 days of drilling time. At 3957 meters (MD), fishing operations for stuck pipe were unsuccessful so the well was sidetracked from 3774 meters (MD). The average ROP for the well was 7.4 meters per hour and at the total depth the rate was 3.7 meters per hour. Water based muds with weights ranging from 1050 to 1420 kg/m3 were used to drill the well. The well drilled through Tertiary and Cretaceous aged intervals. Upon evaluation, there were no hydrocarbon bearing formations found and the well was plugged and abandoned (BP Resources Canada Limited, 1985). Assumptions: The well was sidetracked from 3774 meters (MD). This meterage is included in total meters drilled and ROP calculations.

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Well Name: BP Beau et al Baie Verte J-57

Well Summary


Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built)

Eastern Newfoundland Orphan Summer - Fall 303.0 Exploration Bow Drill One (Bow Valley Offshore Drilling - 1976)


2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4911.0 NA 4788.3 1050 - 1420 Water Based


NA 110.2 28.8 8.2 24.6 0.0 5.0 43.6


43.5 23.0 45.5 7.4% 22.3%


Mi ni mum 0.4 0.4 0.8 1.5

Aver a ge 6.9 12.0 3.2 6.0

M axi mum 26.9 26.9 3.8 100.0

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Drilling Time 26%


Wait on Weather 22%

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254


Lancaster G-70 Lancaster G-70, operated by Petro-Canada Incorporated, was an exploration well drilled during the spring, summer and fall of 1986 in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 725 meters, Lancaster G-70 was drilled using Sedco International’s Sedco 710, a third generation, semi-submersible rig with dynamic positioning and mooring capabilities. The well was spudded on April 19, 1986 and operations were completed on November 4, 1986 after 218.7 days of operations. Wait on weather and non-productive time accounted for 2.3 percent and 20.7 percent of total time. The most significant non-productive time delay was 23.1 days to correct leaky failsafe valves and STI connectors on the BOP. There were no days in wait on ice delays during operations and there were no reported HSE or lost time incidents. Total depth of 5701 meters (MD) was reached after 65.1 days in drilling time. The average ROP for the well was 3.2 meters per hour and at the total depth the rate was 0.6 meters per hour. Water based muds with weights ranging from 1054.5 to 1845.3 kg/m3 were used to drill the well. The well drilled through Tertiary, Cretaceous and Jurassic aged intervals. The hydrocarbons founds were not considered of economic value so no testing was performed and the well was plugged and abandoned (Petro-Canada Incorporated, 1987).

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Well Name: Petro-Canada Lancaster G-70

Well Summary

Well Date: April 19, 1986 - November 4, 1986


Eastern Newfoundland Flemish Pass Spring - Summer - Fall 725.0 Exploration Sedco 710 (Sedco International - 1982) 3rd Gen, Semi-submersible, Moored/DP Plugged and Abandoned None Reported


5701.0 5676.0 4950.7 1054.5 - 1845.3 Water Based


NA 218.7 65.1 45.2 4.9 0.0 10.4 93.0


22.6 44.2 23.8 20.7% 2.3%


Mi ni mum 0.4 12.7 18.1 0.4 1.9

Aver a ge 3.2 18.2 18.1 1.7 13.2

M axi mum 21.4 21.4 18.1 18.1 93.8

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Drilling Time 30%




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Kyle L-11 Kyle L-11, operated by Esso Resources Canada Limited, was an exploration well drilled during the spring and summer of 1986 in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1118.7 meters, Kyle L-11 was drilled using Sedco International’s Sedco 709, a second generation, dynamically positioned semi-submersible rig. The well was spudded on April 26, 1986 and operations were completed on August 5, 1986 after 101.3 days. Non-productive time accounting for 6.4 percent of total time. There were no wait on weather or wait on ice delays during operations. As well, there were no reports of HSE or lost time incidents. Total depth of 4200 meters (MD) was reached after 45.9 days in drilling time. The average rate of penetration for the well was 2.8 meters per hour. Oil based mud with weights ranging from 922.7 to 1090.4 kg/m3 were used to drill the well. This was a low toxicity mineral oil based drilling fluid and Kyle L-11 was the second of two deepwater applications using this type of drilling fluid. The base oil was different than that of the previous Baccalieu well but overall the use of this type of mud was an unqualified success and the mud system was recommended for future offshore wells by the operator. The well drilled through Tertiary, Cretaceous, Jurassic and Paleozoic aged intervals. There were no potential hydrocarbon bearing reservoirs found during operations and the well was plugged and abandoned (Esso Resources Canada Limited, 1986). Assumptions: There was no bit record in the end of well report for Kyle L-11 and therefore not all drilling metrics have been calculated. Drilling time is taken from the stated drill time in the well report. A rate of penetration while drilling and days per 1000 meters while drilling has been calculated based on the drill time given and the total number of meters drilled. As well, due to lack of information, the rate of penetration in each geologic time interval encountered during drilling were not calculated for this well.

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Well Name: Esso Parex et al Kyle L-11

Well Summary


Gener a l Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Eastern Newfoundland Flemish Pass Spring - Summer 1118.7 Exploration Sedco 709 (Sedco International - 1977) 2nd Gen, Semi-submersible, DP Plugged and Abandoned None Reported

Dr illing Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

4200.0 NA 3057.3 922.7 - 1090.4 Oil Based

Tim e Ana lysis (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

140.0 101.3 45.9 6.5 0.0 0.0 4.7 44.2

Per for ma nce Metr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

30.2 33.1 31.6 6.4% 0.0%

Dr illing M etr ics ROP while drilling (m/hr) Days/1000 meters while drilling (days)

Minimum NA NA

Aver a ge 2.8 15.0

M aximum NA NA

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Kyle L-11 - Time Distribution


Drilling Time 45%

Data Acquisition Non Productive 5% Time Wait on Weather 6% 0%

261


Golconda C-64 Golconda C-64, operated by Husky Oil Operations Limited, was an exploration well drilled during the fall of 1986 and winter of 1987 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 172.8 meters, Golconda C-64 was drilled using Bow Valley Offshore Drilling’s Bow Drill 3, a third generation, moored semi-submersible rig. The well was spudded on October 5, 1986 and operations were completed on February 2, 1987 after 120.7 days. Wait on weather and non-productive time accounted for 4.4 percent and 19.7 percent of total time. Non-productive time was mostly attributed to 12.6 days in BOP repairs and there were 3.6 days in wait on ice delays during operations. There were no reports of HSE or lost time incidents. Total depth of 4450.9 meters (MD) was reached after 46.1 days in drilling time. The average ROP for the well was 3.9 meters per hour and at the total depth the rate was 3.1 meters per hour. Water based muds with average weights ranging from 1080 to 1200 kg/m3 were used to drill the well. The well encountered Tertiary and Jurassic aged intervals during drilling and it has been plugged and abandoned (Husky Oil Operations Limited, 1987).

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Well Name: Husky-Bow Valley et al Golconda C-64

Well Summary

Well Date: October 5, 1986 - February 2, 1987



Eastern Newfoundland Flemish Pass Fall - Winter 172.8 Exploration Bow Drill 3 (Bow Valley Offshore Drilling Ltd - 1984) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4450.9 4351.3 4254.5 1080 - 1200 Water Based


81.0 120.7 46.1 20.1 5.3 3.6 6.0 39.6


35.2 28.4 37.1 19.7% 4.4%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.2 5.1 0.2 0.8


Aver a ge 3.8 38.5 2.5 10.8

M axi mum 55.3 55.3 5.1 277.8

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Drilling Time 38%



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Mizzen L-11 Mizzen L-11, operated by Petro-Canada Incorporated, was an exploration well drilled during the winter of 2003 on the Mizzen prospect located in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1153 meters, Mizzen L-11 was the first of three exploration wells drilled on the Mizzen prospect. Ocean Rig’s Eirik Raude, a fifth generation, dynamically positioned semi-submersible rig was used to drill the well. The rig arrived on site on February 7, 2003 and the well was completed on April 26, 2003 after 77.4 days. The well was originally budgeted to take 41.6 days but wait on weather and non-productive time delays were significant and accounted for 11.1 percent and 33.4 percent of total time. The most significant non-productive time delay occurred after a winter storm caused damage to the riser and a leak on the conduit line. During the investigation, the marine tension ring was dropped onto the slip joint and the entire riser had to be pulled. This incident caused a delay of 9.79 days. In addition, While attempting to displace the choke and kill lines after re-running and latching the BOP, the 20” casing was accidently ruptured and caused a delay of 7.37 days as the well had to be re-designed. There were 95 HSE and quality incidents reported. The most significant included 35 due to production equipment damage, 20 near misses, 4 significant near misses and 24 first aid cases. There were zero lost time incidents. Total depth of 3802 meters (MD) was reached after 6.69 days of drilling time. The ROP in the Jurassic reservoir and to total depth of 3802 meters (MD) was 11 meters per hour using a synthetic based mud with a weight of 1200 kg/m3. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling and it has been permanently plugged and abandoned (Petro-Canada Incorporated, 2003).

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Name: Petro-Canada et al Mizzen L-11

Well Summary

Well Date: February 7, 2003 - April 26, 2003 General Overvi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Flemish Pass Winter -Spring 1153.0 Exploration, Vertical Eirik Raude (Ocean Rig - 2002) 5th Gen, Semi-submersible, DP Plugged and Abandoned 95

Dr il li ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3802.0 3799.0 2650.0 1040 - 1200 Synthetic and Water Based

Time Anal ysi s (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

41.6 77.4 6.7 25.9 8.6 0.0 3.8 32.5

Perfor mance M etri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

34.2 29.2 36.0 33.4% 11.1%

Dr il li ng M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (m/hr)

M ini mum 11.0 18.0 11.0 11.0 1.1

Average 16.5 27.0 11.2 11.0 2.5

Maxi mum 29.0 28.0 28.0 11.0 3.8

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Mizzen L-11 - Time Distribution Drilling Time 9% Other Rig Operations 42% Non Productive Time 33%

Data Acquisition 5%

Wait on Weather 11%

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Tuckamore B-27 Tuckamore B-27, operated by Petro-Canada Incorporated, was an exploration well drilled during the spring of 2003 in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1134 meters, Tuckamore B-27 was drilled using Ocean Rig’s Eirik Raude, a fifth generation, dynamically positioned semi-submersible rig. The rig arrived on site on April 27, 2003 and the well was spudded on April 28, 2003. Operations were completed on June 10, 2003 after 46.2 days. The well was planned for 36.2 days but non-productive time accounted for 25 percent of time. There were no wait on weather or wait on ice delays during operations. The most significant delay was caused when pressure tests on the upper outer kill valve could not be achieved so the BOP had to be pulled and rerun. This incident caused 8.3 days in delay. As well, there were 36 reports of HSE incidents but none were lost time incidents. Total depth of 2903 meters (MD) was reached after 4.7 days in drilling time. The average ROP for the well was 15.5 meters per hour and at the total depth the rate was 5.6 meters per hour. Water based muds were used until a depth of 1676 meters (MD) and then synthetic based mud was used until total depth. The average mud weights ranged from 1040 to 1250 kg/m3. The well encountered Tertiary and Cretaceous aged intervals during drilling and it has been plugged and abandoned (Petro-Canada Incorporated, 2003).

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Well Name: Petro-Canada et al Tuckamore B-27

Well Summary

Well Date: April 27, 2003 - June 10, 2003


Eastern Newfoundland Flemish Pass Spring 1134.5 Exploration Eirik Raude (Ocean Rig - 2002) 5th Gen, Semi-submersible, DP Plugged and Abandoned 32


2903.0 2902.9 1743.5 1040 (WBM) - 1250 (SBM) Water and Synthetic Based


36.2 46.2 4.7 11.5 0.0 0.0 2.5 27.4


37.8 26.5 39.9 25.0% 0.0%


Mi ni mum 5.6 10.0 5.6 0.6

Aver a ge 15.5 17.6 8.5 2.7

M axi mum 64.6 22.5 10.0 7.5

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Tuckamore B-27 - Time Distribution Drilling Time 10%

Non Productive Time 25% Other Rig Operations 59%


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Great Barasway F-66 Great Barasway F-66, operated by Chevron Canada Limited, was an exploration well drilled during the summer and fall of 2006 and winter and spring of 2007 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 2338.2 meters, Great Barasway F-66 was drilled using Ocean Rig’s Eirik Raude, a fifth generation, dynamically positioned semi-submersible rig. The rig arrived on site on August 14, 2006 and the well was spudded on August 18, 2006. Total depth of 6751 meters (MD) was reached on January 27, 2007 but the well was not plugged and abandoned until April 22, 2007. Delays were caused when a controlled emergency disconnect of the lower marine riser package was required while pulling out of the hole with the 140mm drill pipe due to marine wire tensioner failures. While these repairs were taking place, a leak in the hull of the rig was found and the rig had to be mobilized off the well site for repairs. Plug and abandonment operations began on April 11, 2007 and completed on April 22, 207. The total time of well was 271.2 days. Wait on weather and non-productive time accounted for 1.3 percent and 37.7 percent of total time. The delay caused by the lower marine riser package disconnect and the repairs to the rig’s hull were the two major sources of time delay. There were no reports of ice delays and it was reported that there were zero HSE or lost time incidents during operations. Total depth of 6751 meters (MD) was reached after 41.7 days in drilling time. The average ROP for the well was 4.4 meters per hour and, at total depth, the rate was 1.7 meters per hour. Water based muds were used until 2888 meters (MD) and then synthetic based muds were used until total depth. The mud weight for the water based mud was 1030 kg/m3 and the synthetic based muds ranged from 1100 to 1380 kg/m3. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling and it has been plugged and abandoned (Chevron Canada Limited, 2009).

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Well Name: Chevron et al Great Barasway F-66

Well Summary

Well Date: August 14, 2006 - April 22, 2007 General Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Eastern Newfoundland Orphan Summer - Fall - Winter - Spring 2338.2 Exploration Eirik Raude (Ocean Rig - 2002) 5th Gen, Semi-submersible, DP Plugged and Abandoned None Reported


6751.0 NA 4390.0 1030 (WBM) - 1380 (SBM) Water and Synthetic Based

Tim e Anal ysi s (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

110.0 271.2 41.7 102.2 3.5 0.0 8.8 115.0

Performance M etr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

16.2 61.8 16.7 37.7% 1.3%

Dr il li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

M ini mum 1.7 4.6 12.7 1.7 2.5

Average 4.4 13.2 12.7 3.0 9.5

Max im um 16.5 16.5 12.7 12.7 24.1

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Great Barasway F-66 - Time Distribution Drilling Time 15% Other Rig Operations 43%

Non Productive Time 38% Data Acquisition 3% Wait on Weather 1%

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277


Mizzen O-16 Mizzen O-16, operated by Statoil Hydro Canada Limited, was an exploration well drilled during the winter of 2008 and 2009 on the Mizzen prospect located in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1095 meters, Mizzen O-16 was the second of three exploration wells drilled on the Mizzen prospect. Transocean’s Henry Goodrich, a third generation, moored semisubmersible rig was used to drill the well. The well commenced on December 7, 2008 and was completed on March 20, 2009 after 107.4 days. This was well over the budgeted 64.7 originally planned. The most significant source of non-productive time was due to the loss of BHA number 2 to the seabed while attempting to stab into the hole. Total depth was reached on February 4, 2009 but due to additional wireline logging and drill stem testing, the rig was moored until the end of March 2009. Other delays included wait on weather time at 24.4 percent and non-productive time at 7.4 percent. As this well was drilled during the winter season, the weather proved to be a significant delay factor accounting for 26 days of the total 107.4 days. There were no waiting on ice delays reported. There were 36 HSE incidents during operations but there were no lost time incidents as a result. Total depth of 3758 meters (MD) was reached after 5.63 days of drilling time. The average ROP for the well was 19.6 meters per hour using a both water and synthetic based muds with weights ranging from 1040 to 1250 kg/m3. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling and it has since been permanently plugged and abandoned (StatoilHydro Canada Limited, 2009).

278


Name: StatoilHydro et al Mizzen O-16

Well Summary

Well Date: December 7, 2008 - March 24, 2009 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Flemish Pass Fall - Winter 1095.0 Exploration, Vertical Henry Goodrich (Transocean - 1985) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned 36


3758.0 3757.2 2642.0 1040 - 1250 Water and Synthetic Based


86.3 107.4 5.6 7.9 26.2 7.4 60.3

Per for ma nce Metr i cs Meters/day (m) Days/1000 meters (m) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

24.6 40.7 26.4 7.4% 24.4%


Mi ni mum 12.5 26.6 12.5 12.5 1.0

Aver a ge 19.6 28.3 12.5 12.5 2.1

M axi mum 42.3 33.5 12.5 12.5 3.3

279


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Mizzen O-16 - Time Distribution Drilling Time Non Productive 5% Time 7%

Wait on Weather 25% Other Rig Operations 56%

Data Acquisition 7%

280


281


Lona O-55 Lona O-55, operated by Chevron Canada Limited, was an exploration well drilled during the spring and summer of 2010 in the Orphan basin of the Eastern Newfoundland area. Lona O-55 was drilled using Stena Drilling’s Stena Carron, a sixth generation drillship with dynamic positioning and mooring capabilities. This well was drilled in a water depth of 2602.4 meters, the second deepest water column drilled offshore Newfoundland to the date of this report. The rig arrived on site on May 7, 2010 and the well was spudded on May 10, 2010. Well operations were completed on August 26, 2010 after 121 days of operations. Wait on weather and non-productive time accounted for 5.5 percent and 34.4 percent of total time. Non-productive time varied but most issues revolved around fishing, subsea repairs and rig and equipment repairs. There were no wait on ice delays during this well and there were nine reports of HSE issues but there were no lost time incidents. Total depth of 5580 meters (MD) was reached after 11.2 days in drilling time. The average ROP for the well was 11 meters per hour and at the total depth the rate was 12.5 meters per hour. Water based mud was used until 3290 meters (MD) and synthetic based muds were used from 3290 meters (MD) until total depth. The water based mud was weighted at 1501 kg/m3 and the synthetic muds ranged from 1116 to 1357 kg/m3. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling and it has been plugged and abandoned (Chevron Canada Limited, 2010).

282


Well Name: Chevron et al Lona O-55

Well Summary

Well Date: May 7, 2010 - August 26, 2010 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Eastern Newfoundland Orphan Spring - Summer 2602.4 Exploration Stena Carron (Stena Drilling - 2008) 6th Gen, Drillship, DP & Mooring Plugged and Abandoned 9




120.0 121.0 11.2 41.6 6.7 0.0 12.1 49.4


24.4 41.1 27.1 34.4% 5.5%


Mi ni mum 5.2 14.3 7.0 7.0 2.2

Aver a ge 11.0 16.2 10.7 7.0 3.8

M axi mum 19.0 19.0 14.3 7.0 8.0

283


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Lona O-55 - Time Distribution Drilling Time 9% Other Rig Operations 41% Non Productive Time 34%


Wait on Weather 6%

284


285


Mizzen F-09 Mizzen F-09, operated by Statoil Canada Limited, was drilled during the summer season on the Mizzen prospect located in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1064.9 meters, Mizzen F-09 was the third well drilled on the Mizzen prospect. Transocean’s Henry Goodrich, a third generation, moored semi-submersible rig was used to drill the well. The well commenced on July 18, 2011 and was completed after 75.1 days on October 1, 2011. Despite 1.8 percent of total time spent on wait on weather and 5.8 percent on non-productive time delays, operations finished ahead of the scheduled 81 days of well time. There were no reported wait on ice delays. The most significant source of time delay was 39.2 hours due to a diverter leak on the main well bore. There were 16 HSE incidents during operations. Drilling operations began with an 8 ½” Pilot Hole in order to assess the potential of shallow gas or overpressured permeable zones present. It was found that there was no shallow gas present and the pilot hole was plugged and abandoned. The rig then moved to the main well location and commenced drilling operations to total depth of 3762 meters (MD) which was reached after 4.2 days of drilling time. The average rate of penetration while drilling was 26.7 metres per hour. During drilling, both water and synthetic based muds with weights ranging from 1050 to 1380 kg/m3 were used. The well encountered Tertiary, Cretaceous and Jurassic aged intervals. The well was permanently plugged and abandoned (Statoil Canada Limited, 2011).

286


Name: Statoil et al Mizzen F-09

Well Summary

Well Date: July 18, 2011 - October 1, 2011 General Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name Rig Type Current Well Status HSE Incidents

Eastern Newfoundland Flemish Pass Summer - Fall 1064.9 Delineation Henry Goodrich (Transocean - 1985) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned 16

Drilling Data Total Depth (MD) Total Depth (TVD) Total Meters Drilled Mud Weight (kg/m3) Drilling Fluid Type


Performance M etr ics (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Data Acquisition Other Rig Operations

81.0 75.1 4.2 4.4 1.4 4.7 60.5

Performance M etr ics Meters/day Days/1000 meters Meters/day (excluding data acquisition) Non-Productive Time Wait on Weather

35.6 28.1 38.0 5.8% 1.8%

Drilling Metrics ROP while drilling (m/hr) ROP - Tertiary ROP - Cretaceous ROP - Jurassic Days/1000 meters while drilling

M inimum 7.6 38.3 7.6 7.6 1.1

Average 26.7 38.8 32.5 12.1 1.6

Maximum 38.3 39.2 39.2 13.4 5.5

287


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Mizzen F-09 - Time Distribution Drilling Time Non Productive Time 6% 6% Wait on Weather 2% Data Acquisition 6%


288


289


Harpoon O-85 Harpoon O-85, operated by Statoil Canada Limited, was an exploration well drilled during the spring of 2013 on the Harpoon West prospect located in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1160.8 meters, the exploration well was spudded using Seadrill’s West Aquarius, a sixth generation, dynamically positioned semi-submersible rig. The rig arrived at the well site on March 28, 2013 and the well was completed on June 16th, 2013 after 83 days. The planned time of the well was 69.6 days, however, non-productive time and wait on weather accounted for 25.1 percent and 5.1 percent of well time. There were no reported wait on ice incidents. The most significant delays were caused when a leak was found on the BOP kill line jumper and when pressure tests were unable to be conducted on the 20” casing due to a leak in the casing. There were 15 HSE incidents during operations. Total depth of 3377 meters was reached after 6.49 days of drilling time. The average rate of penetration during drilling was 14.0 meters per hour. Both water and synthetic based muds with weights ranging from 1050 to 1150 kg/m3 were used to drill the well. During drilling, the well encountered Tertiary, Cretaceous and Jurassic aged intervals. The well was temporarily plugged and abandoned with the wellhead kept in place and has been classified as an oil discovery (Statoil Canada Limited, 2013). Note - Though rig move started on March 1, 2013, the rig was used for the Margaree A-49 well until March 28, 2013.

290


Name: Statoil et al Harpoon O-85

Well Summary

Well Date: March 1, 2013 - June 16, 2013 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Flemish Pass Winter - Spring 1160.84 Exploration West Aquarius (Seadrill - 2008) 6th Gen, Semi-submersible, DP Temporarily Plugged and Abandoned 15



Ti m e Ana l ysi s (days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Data Acquisition Other Rig Operations

69.6 83.0 6.5 20.8 4.2 6.6 44.8


26.3 38.0 28.6 25.1% 5.1%


Mi ni mum 4.0 4.0 4.0 15.2 2.2

Aver a ge 14.0 11.5 16.1 15.2 3.0

M axi mum 18.7 18.7 17.4 15.2 10.5

291


Harpoon O-85 - Time Depth Plot Time (days) 0

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Harpoon O-85 - Time Distribution Drilling Time 8% Non Productive Time 25% Other Rig Operations 54% Wait on Weather 5% Data Acquisition 8%

292


293


Margaree A-49 Margaree A-49, operated by Chevron Canada Limited, was drilled during the summer season of 2013 in the Orphan basin of the Eastern Newfoundland area. At a water depth of 2475.6 meters, the exploration well was drilled using the Stena Carron, a sixth generation, dynamically positioned drillship. The current day rate of the Stena Carron is $235,000 USD. While waiting for the Stena Carron drillship, the Seadrill West Aquarius, a sixth generation, dynamically positioned semi-submersible, was used to spud the well in order to comply with the well license expiration timeline. The entire well operations took 183.6 days. The West Aquarius rig arrived at the well site on March 6, 2013 and completed the spudding operations on March 28, 2013. The well was then suspended until July 6, 2013 when the Stena Carron began its move to the well site. The well was reentered on July 25 and left the well site on December 6, 2013, however total depth of 6158 meters (MD) was reached on October 23, 2013. Data regarding the budgeted planned time is unavailable, however, non-productive time and wait on weather accounted for 15.2 percent and 13.8 percent respectively. There were no delays related to waiting on ice reported. There were a total of 9.8 days of weather delay in March 2013 when the West Aquarius was spudding the well. Other significant delays were due to the pulling of the BOP when coil break faults on the monitoring system were unable to be cleared and the pulling of the lower marine riser package to inspect a leak. There were 13 HSE incidents during operations, including 8 near misses, 4 first aid cases and 1 spill incident. Total depth of 6158 meters (MD) was reached after 16.9 days of drilling time. The average rate of penetration while drilling was 9.0 meters per hour. Both water and synthetic based muds with weights ranging from 1031 to 1498 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals and it has been plugged and abandoned with the wellhead left in place (Chevron Canada Limited, 2014).

294


Name: Chevron et al Margaree A-49

Well Summary

Well Date: March 5, 2013 - December 13, 2013 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Orphan Spring - Summer - Fall 2475.6 Exploration Stena Carron (Stena Drilling - 2008) 6th Gen, Drillship, DP Temporarily Plugged and Abandoned 13




NA 183.6 16.9 27.9 25.4 5.1 108.2


19.9 50.3 20.5 15.2% 13.8%


Mi ni mum 1.4 9.4 5.9 1.4 1.0

Aver a ge 9.0 10.1 7.9 5.1 4.6

M axi mum 29.8 10.8 10.8 5.9 24.3

295


Margaree A-49 - Time Depth Plot Time (days) 0

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Margaree A-49 - Time Distribution Drilling Time 9% Non Productive Time 15%



296


297


Bay Du Nord C-78 Bay du Nord C-78, operated by Statoil Canada Limited, was an exploration well drilled during the summer of 2013. It was the first well drilled on the Bay du Nord structure in the Flemish Pass basin of the Eastern Newfoundland area. At a water depth of 1166.1 meters, the well was drilled using Seadrill’s West Aquarius, a sixth generation, dynamically positioned semi-submersible rig. The rig arrived at the well site on July 15, 2013 and completed operations after 59.1 days on September 12, 2013 ahead of the planned 73 days. Despite finishing ahead of schedule, there were 14.83 days of non-productive time delays. The most significant delay resulted from the pulling of the BOP to repair a leak on the subsea accumulator charge line valve. There were no wait on weather or wait on ice delays and in terms on HSE, there were 14 reported incidents but none were classified as lost time incidents. The total drilling time to total depth of 3510 meters (MD) was 3.55 days with an average rate of penetration while drilling of 31.8 meters per hour. Synthetic based muds with a maximum weight of 1400 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling. Upon completion of the plug and abandonment procedures, Bay du Nord C-78z, a geological sidetrack commenced. Bay du Nord C-78 was plugged and abandoned with the well classified as an oil discovery (Statoil Canada Limited, 2015).

298


Name: Statoil Bay Du Nord C-78

Well Summary

Well Date: July 15, 2013 - September 12, 2013 Gener a l Over vi ew Offshore Region Basin Well Season Water Depth (m) Well Classification Rig Name (Year Built) Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Flemish Pass Summer 1166.1 Exploration, Vertical West Aquarius (Seadrill - 2008) 6th Gen, Semi-submersible, DP Plugged and Abandoned 14


3510.0 3509.5 2315.3 1400.0 Synthetic Based


73.0 59.1 3.0 14.8 0.0 0.0 8.6 32.6


39.2 25.5 45.8 23.5% 0.0%


Mi ni mum 16.6 42.5 17.0 17.0 1.0

Aver a ge 31.8 42.9 26.8 21.3 1.3

M axi mum 44.2 44.2 42.5 24.3 2.5

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Bay du Nord C-78 - Time Distribution Drilling Time 6% Non Productive Time 23%



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301


Bay Du Nord C-78z Bay du Nord C-78z, operated by Statoil Canada Limited, was a geological sidetrack of the Bay du Nord C78 well. Once C-78 was completed during the summer season on September 12, 2013, the sidetrack operations began. At a water depth of 1166.1 meters, the C-78 well was drilled using Seadrill’s West Aquarius, a sixth generation, dynamically positioned semi-submersible rig. The sidetrack began on September 12, 2013 and completed after 25.1 days on October 7, 2013 when the rig moved off the well site. Non-productive time accounted for 2.1 percent of the sidetrack but there were no wait on weather or wait on ice delays. There were 4 HSE incidents and 13 quality incidents but no lost time incidents were reported. The purpose of the geological sidetrack was to identify the oil-water contact in the structure. The total depth of Bay du Nord C-78 was 3510 meters (MD) and for the sidetrack well, a whipstock was put in place and a hole from the 9 5/8” casing was milled from 2456.7 meters measured depth versus true vertical depth (MD/TVD) to 2462.78 meters (MD/TVD). The final total depth of Bay du Nord C-78z was 3664 meters (MD) (3435 meters TVD) with total meters drilled of 1201 meters away from the original C78 well. The rate of penetration (ROP) at total depth was 19.1 meters per hour using a synthetic based mud with a weight of 1260 kg/m3. The section of the geological sidetrack was permanently plugged and abandoned with the sidetrack well being classified as an oil discovery with an oil-water contact encountered (Statoil Canada Limited, 2013).

302


Name: Statoil Bay Du Nord C-78z

Well Summary

Well Date: September 12, 2013 - October 7, 2013 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name Rig Type Current Well Status Number of HSE Incidents

Eastern Newfoundland Flemish Pass Summer - Fall 1166.1 Exploration - Geological Sidetrack West Aquarius (Seadrill - 2008) 6th Gen, Semi-submersible, DP Plugged and Abandoned 4

Dr i l li ng Data Total Depth (MD) Total Depth (TVD) Total Meters Drilled Mud Weight (kg/m3) Drilling Fluid Type

3664.0 3435.0 1201.0 1260.0 Synthetic Based


NA 25.1 2.6 0.5 0.0 3.2 18.8

Pefor m ance Metri cs Meters/day Days/1000 meters Meters/day (excluding data acquisition) Non-Productive Time Wait on Weather

47.9 20.9 55.0 2.1% 0.0%


Mi ni mum 19.1 NA 19.1 19.1 1.0

Aver a ge 19.6 NA 19.9 19.1 2.1

M axi mum 42.2 NA 42.2 19.1 2.2

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Bay du Nord C-78z - Time Distribution Drilling Time Non Productive 10% Time 6% Wait on Weather 0% Data Acquisition 13%


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305


Appendix C: Individual Well Summary Reports – Jeanne d’Arc Area

306


Appendix C: Table of Contents Murre G-67 ........................................................................................................................................ 308 Cormorant N-83 ................................................................................................................................. 311 Adolphus 2K-41 .................................................................................................................................. 315 Egret K-36 .......................................................................................................................................... 319 Flying Foam I-13 ................................................................................................................................. 323 Hibernia P-15 ..................................................................................................................................... 327 Ben Nevis I-45 .................................................................................................................................... 330 South Tempest G-88 ........................................................................................................................... 334 Hebron I-13 ........................................................................................................................................ 337 Hibernia K-18 ..................................................................................................................................... 341 West Flying Foam L-23........................................................................................................................ 345 Rankin M-36 ....................................................................................................................................... 348 White Rose N-22 ................................................................................................................................ 352 Terra Nova K-18.................................................................................................................................. 356 Conquest K-09 .................................................................................................................................... 360 North Ben Nevis P-93 ......................................................................................................................... 364 North Trinity H-71 .............................................................................................................................. 368 Fortune G-57 ...................................................................................................................................... 372 South Merasheen K-55 ....................................................................................................................... 376 King's Cove A-26 ................................................................................................................................. 380 Brent's Cove I-30 ................................................................................................................................ 383 Hebron M-04 ...................................................................................................................................... 387 North Amethyst K-15 .......................................................................................................................... 391 Ballicatters M-96 ................................................................................................................................ 395 Searcher C-87 ..................................................................................................................................... 399 Federation K-87 .................................................................................................................................. 403

307


Murre G-67 Murre G-67, operated by Amoco Canada, was an exploration well drilled during the summer of 1971 in the Jeanne d’Arc basin. At a water depth of 64.6 meters, Murre G-67 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on July 14, 1971 and operations were completed on September 20, 1971 after 76 days. Wait on weather and non-productive time accounted for 4.8 percent and 5.1 percent of total time. The most significant non-productive time delays were due to fishing when a Wireline Formation Tester tool became stuck at 3054 meters (MD). Fishing operations were unsuccessful and the well had to be sidetracked. There were no reports of ice delays or HSE or lost time incidents. Total depth of 3337.3 meters (MD) was reached after 22.2 days in drilling time. The average rate of penetration for the well was 6.1 meters per hour and at the total depth the rate was 3.3 meters per hour. Water based muds with weights ranging from 1054.5 to 1282.1 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling. The well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1972).

308


Well Name: Amoco - I.O.E. A-1 Murre G-67

Well Summary



Jeanne d'Arc Jeanne d'Arc Summer 64.6 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3337.3 NA 3244.0 1054.5 - 1282.1 Water Based


NA 72.7 22.2 3.7 3.5 0.0 7.0 36.3


44.6 22.4 49.4 5.1% 4.8%


Mi ni mum 1.4 13.9 19.1 1.4 1.1

Aver a ge 6.1 24.5 24.9 4.6 6.9

M axi mum 37.7 37.7 37.7 10.3 29.0

309


*No Time Depth Plot Available

Murre G-67 - Time Distribution

Drilling Time 30%



310


Cormorant N-83 Cormorant N-83, operated by Amoco Canada Petroleum Company Limited, was an exploration well drilled during the summer and fall of 1972 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 65.8 meters, Cormorant N-83 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible. The well was spudded on August 30, 1972 and operations were completed on November 21, 1972 after 85.4 days. Wait on weather and non-productive time accounted for 10.1 percent and 26.2 percent of total time. The most significant non-productive time delays were due to fishing operations. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3160.5 meters (MD) was reached after 14.2 days in drilling time. The average ROP for the well was 9.0 meters per hour and at total depth the rate was 6.0 meters per hour. Water based muds with weights ranging from 1090.4 to 1593.7 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling. The well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

311


Well Name: Amoco-Imp A-1 Cormorant N-83

Well Summary



Jeanne d'Arc Jeanne d'Arc Summer - Fall 65.8 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3160.5 NA 3064.8 1090.4 - 1593.7 Water Based


NA 85.4 14.2 22.4 8.6 0.0 8.7 31.4


35.9 27.9 40.0 26.2% 10.1%


Mi ni mum 2.0 36.2 14.6 2.0 0.7

Aver a ge 9.0 36.2 23.3 7.2 4.6

M axi mum 57.9 36.2 36.2 17.9 20.5

312


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Cormorant N-83 - Time Distribution Drilling Time 17% Other Rig Operations 37%



Wait on Weather 10%

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314


Adolphus 2K-41 Adolphus 2K-41, operated by Mobil Oil Limited, was an exploration well drilled during the winter of 1972 and 1973 and the summer of 1973 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 114 meters, Adolphus 2K-41 was drilled using Sedco International’s Sedco J, a first generation, moored semi-submersible rig. The well was spudded on December 10, 1972 and operations were suspended on January 4, 1973 due weather and ice conditions. The well was re-entered on July 30, 1973 and operations completed on September 26, 1973 after 100.8 days. Wait on weather and non-productive time accounted for 8.9 percent and 1.7 percent of total time. The most significant non-productive time delays were due to rig repairs. Despite the well suspension for weather and ice, there were no reports of ice delays. As well, there were no HSE or lost time incidents during operations. Total depth of 3657.6 meters (MD) was reached after 14.7 days in drilling time. The average ROP for the well was 9.9 meters per hour and at the total depth the rate was 10.1 meters per hour. Water based muds with weights ranging from 1042.5 to 1617.7 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered as well as salt. Eight production tests were performed on this well and it was classified as an oil show. The well was plugged and abandoned (Mobil Oil Canada Limited, 1973).

315


Well Name: Mobil Gulf Adolphus 2K-41

Well Summary

Well Date: December 10, 1972 - September 26, 1973

Genera l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Jeanne d'Arc Jeanne d'Arc Winter - Summer 114.0 Exploration Sedco J (Sedco International - 1972) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3657.6 NA 3510.4 1042.5 - 1617.7 Water Based


NA 100.8 13.5 1.7 8.9 0.0 25.3 51.3


34.8 28.7 46.5 1.7% 8.9%

Dri l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

M i ni mum 2.2 5.5 2.2 3.2 5.1 1.4

Avera ge 10.8 18.4 4.4 5.9 8.5 3.8

M ax imum 30.1 30.1 5.5 6.4 14.6 18.6

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Adolphus 2K-41 - Time Distribution Drilling Time Non Productive 13% Time 2% Wait on Weather 9% Other Rig Operations 51% Data Acquisition 25%

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318


Egret K-36 Egret K-36, operated by Amoco Canada, was an exploration well drilled during the summer of 1973 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 68.0 meters, Egret K-36 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on July 12, 1973 and operations were completed on September 11, 1973 after 64.2 days. Non-productive time accounted for 13.6 percent of total time and was mostly caused by drilling equipment issues. There were no reports of wait on weather, ice delays or HSE or lost time incidents during operations. Total depth of 3352.8 meters (MD) was reached after 24.9 days in drilling time. The average ROP for the well was 5.4 meters per hour and at the total depth the rate was 2.5 meters per hour. Water based muds with weights ranging from 1066.5 to 1330.1 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling. The well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

319


Well Name: Amoco-Imp-Skelly B-1 Egret K-36

Well Summary



Jeanne d'Arc Jeanne d'Arc Summer 68.0 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3352.8 NA 3254.3 1066.5 - 1330.1 Water Based


NA 64.2 24.9 8.4 0.0 0.0 5.4 25.5


50.7 19.7 55.3 13.1% 0.0%

Dri l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

M i ni mum 1.4 13.8 6.1 1.4 1.5

Avera ge 5.4 23.2 10.8 2.9 7.7

M ax imum 27.9 27.9 25.6 8.8 30.3

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Egret K-36 - Time Distribution



Drilling Time 39%


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322


Flying Foam I-13 Flying Foam I-13, operated by Mobil Oil Canada Limited, was an exploration well drilled during the fall of 1973 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 91.4 meters, Flying Foam I-13 was drilled using Sedco International’s Sedco J, a first generation, semi-submersible rig. The well was spudded on September 28, 1973 and operations were completed on November 28, 1973 after 63 days. Wait on weather and non-productive time accounted for 2.4 percent and 2.4 percent of total time. The non-productive time delays were due to rig repairs. As well, there were no reports of wait on ice delays or HSE or lost time incidents during operations. The total depth of 3683.2 meters (MD) was reached after 22.5 days in drilling time. The average ROP for the well was 6.5 meters per hour and at the total depth, in the Upper Jurassic formation, the rate was 2.3 meters per hour. Water based muds with weights ranging from 1054.5 to 1401.9 kg/m3 were used to drill the well. The well was drilled through Quaternary, Tertiary, Cretaceous and Jurassic aged intervals. Upon evaluation, the well was found to be a dry hole and was plugged and abandoned (Mobil Oil Canada Limited, 1974).

323


Well Name: Mobil Gulf Flying Foam I-13

Well Summary

Well Date: September 28, 1973 - November 28, 1973


Eastern Newfoundland Jeanne d'Arc Fall 91.4 Exploration Sedco J (Sedco International - 1972) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3683.2 NA 3510.4 1054.5 - 1401.9 Water Based


50.0 63.0 22.5 2.4 2.4 0.0 5.2 30.4


55.7 17.9 60.7 3.9% 3.8%


Mi ni mum 0.2 12.8 2.5 0.2 1.2

Aver a ge 6.5 23.2 3.8 2.6 6.4

M axi mum 34.9 34.9 12.8 4.3 187.1

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Flying Foam I-13 - Time Distribution


Drilling Time 36%

Non Productive Time 4% Wait on Weather Data Acquisition 4% 8%

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326


Hibernia P-15 Hibernia P-15, operated by Chevron Standard Limited, was an exploration well drilled during the summer and fall of 1979 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 80.2 meters, Hibernia P-15 was drilled first using Global Marine’s Glomar Atlantic, a second generation, both moored and dynamically positioned drillship and then using Zapata Offshore Drilling Limited’s Zapata Ugland, a second generation, moored semi-submersible rig. The well was spudded on May 27, 1979 with the Glomar Atlantic and operations were temporarily suspended due to weather on October 22, 1979. The well was re-entered using the Zapata Ugland on November 4, 1979 and operations were completed on January 7, 1980 after a total of 204 days. Wait on weather and non-productive time accounted for 9.0 percent and 9.8 percent of total time. The most significant non-productive time delays were due to subsea equipment repairs and fishing operations. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4406.8 meters (MD) was reached after 38.8 days in drilling time. The average ROP for the well was 4.6 meters per hour and at the total depth the rate was 2.2 meters per hour. Water based muds with weights ranging from 1150 to 1860 kg/m3 were used to drill the well. The well was drilled through Tertiary, Cretaceous and Jurassic aged intervals. There were significant hydrocarbons found in this well and twelve drill stem tests were performed. It was classified as an oil well and has been plugged and abandoned (Chevron Standard Limited, 1980).

327


Well Name: Chevron et al Hibernia P-15

Well Summary

Well Date: May 27, 1979 - January 7, 1980



Jeanne d'Arc Jeanne d'Arc Summer - Fall 80.2 Exploration Glomar Atlantic (Global Marine - 1978) Zapata Ugland (Zapata Offshore Drilling - 1974) 2nd Gen, Drillship, DP 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

D r illing Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

4406.8 NA 4314.8 1150-1860 Water Based

Time Analysis (D ays) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 204.0 38.8 20.1 18.4 0.0 52.6 74.2

Perfor mance M etri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

21.1 47.3 28.5 9.8% 9.0%

D r illing Metr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

M ini mum 0.3 11.5 0.6 0.3 1.6

Rig Name (Owner - Year Built) Rig Type

Aver ag e 4.6 22.1 4.1 1.1 9.0

Ma ximum 26.6 26.6 12.0 2.2 159.0

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*No Time Depth Plot

Hibernia P-15 - Time Distribution Drilling Time 19%



Wait on Weather 9%


329


Ben Nevis I-45 Ben Nevis I-45, operated by Mobil Oil Limited, was an exploration well drilled during the winter, spring and summer of 1980 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 100 meters, Ben Nevis I-45 was drilled using Zapata Offshore Drilling Limited’s Zapata Ugland, a second generation, moored semi-submersible rig. The well was spudded on January 10, 1980 and operations were completed on August 30, 1980 after 247 days. Wait on weather and non-productive time accounted for 3.6 percent and 7.6 percent of total time. The most significant non-productive time delays were due to rig repairs and fishing operation. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4932 meters (MD) was reached after 62 days in drilling time. The average ROP for the well was 3.2 meters per hour and at the total depth the rate was 1.4 meters per hour. Water based muds with weights ranging from 1040 to 1780 kg/m3 were used to drill the well. Quaternary, Tertiary, Cretaceous and Jurassic aged intervals were encountered while drilling Ben Nevis I-45. Thirteen drill stem tests were performed on Ben Nevis I-45 and the well has been classified as an oil and gas well. A total of 67.4 days were attributed to data acquisition (Mobil Oil Canada Limited, 1981).

330


Well Name: Mobil et al Ben Nevis I-45

Well Summary

Well Date: January 10, 1980 - August 30, 1980



Jeanne d'Arc Jeanne d'Arc Winter - Spring - Summer 100.0 Exploration Zapata Ugland (Zapata Offshore Drilling Limited - 1974) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4932.0 NA 4804.6 1040 - 1780 Water Based


NA 247.0 62.0 18.8 8.9 0.0 67.4 89.9


19.5 51.4 26.8 7.6% 3.6%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.5 0.5 1.0 2.1


Aver a ge 3.2 2.5 1.4 12.9

M axi mum 20.3 15.2 1.7 79.7

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Drilling Time 25%



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333


South Tempest G-88 South Tempest G-88, operated by Mobil Oil Canada Limited, was an exploration well drilled during the fall of 1980 and the winter and spring of 1981 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 158.2 meters, South Tempest G-88 was drilled using Zapata Offshore Drilling Limited’s Zapata Ugland, a second generation, moored semi-submersible. The well was spudded on September 16, 1980 and operations were completed on April 28, 1981 after 230.2 days. Wait on weather and non-productive time accounted for 2.8 percent and 3.1 percent of total time. Non-productive delays were caused by fishing operations and rig repairs. There were no wait on ice delays during operations and there were no reports of HSE or lost time incidents. Total depth of 4674 meters (MD) was reached after 55 days of drilling time. The average ROP for the well was 3.3 meters per hour and at the total depth the rate was 0.9 meters per hour in the Jurassic interval. Water based muds with weights ranging from 1080 to 2020 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered while drilling South Tempest G-88. Seven drill stem tests were conducted to evaluate this well. The well has been plugged and abandoned but was classified as an oil well (Mobil Oil Canada Limited, 1982).

334


Well Name: Mobil et al South Tempest G-88

Well Summary

Well Date: September 16, 1980 - April 28, 1981 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Eastern Newfoundland Jeanne d'Arc Fall - Winter - Spring 158.2 Exploraiton Zapata Ugland (Zapata Offshore Drilling Ltd - 1974) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4674.5 NA 4489.1 1080 - 2020 Water Based


NA 230.2 55.0 7.3 6.5 0.0 45.9 115.5


19.5 51.3 24.4 3.1% 2.8%


Mi ni mum 0.3 1.6 0.3 1.9


Aver a ge 3.3 2.8 1.6 12.8

M axi mum 21.9 3.8 2.8 123.0

335



South Tempest G-88 - Time Distribution Drilling Time 24%




336


Hebron I-13 Hebron I-13, operated by Mobil Oil Canada Limited, was an exploration well drilled during the winter, spring and summer of 1981 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 94 meters, Hebron I-13 was drilled using Sedco International’s Sedco 706, a second generation, moored semi-submersible rig. The well was spudded on January 14, 1981 and operations were completed on September 9, 1981 after 242.7 days. Wait on weather and non-productive time accounted for 0.6 percent and 5.6 percent of total time. The most significant non-productive time delays were due to fishing operations. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4723.5 meters (MD) was reached after 61.4 days in drilling time. The average ROP for the well was 3.1 meters per hour and at the total depth the rate was 3.1 meters per hour. Water based muds with weights ranging from 1054.4 to 1977 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling. Ten drill stem tests were performed on Hebron I-13 and five showed significant hydrocarbon potential. The well was classified as an oil well and was suspended (Mobil Oil Canada Limited, 1982).

337


Well Name: Mobil et al Hebron I-13

Well Summary

Well Date: January 14, 1981 - September 9, 1981


Jeanne d'Arc Jeanne d'Arc Winter - Spring - Summer 94.0 Exploration Sedco 706 (Sedco International - 1976) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4723.5 NA 4602.2 1054.4 - 1977 Water Based


NA 242.7 61.4 13.6 1.5 0.0 34.1 132.1


19.0 52.7 22.1 5.6% 0.6%


Mi ni mum 0.6 1.1 0.6 3.3

Aver a ge 3.1 3.6 1.4 13.3

M axi mum 12.5 12.5 3.0 71.9

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Hebron I-13 - Time Depth Plot Time (days) 0

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Jeanne d'Arc Area Maximum (m) Hebron I-13

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Hebron I-13 - Time Distribution Drilling Time 25%



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340


Hibernia K-18 Hibernia K-18, operated by Mobil Oil Canada Limited, was an exploration well drilled during 1981 in the Jeanne d’Arc area. At a water depth of 78.3 meters, Hibernia K-18 was first drilled using Odeco’s Ocean Ranger and later drilled using Zapata Offshore Drilling Limited’s Zapata Ugland. Both rigs are second generation, moored semi-submersibles. The well was spudded on February 26, 1981 and operations were completed on November 6, 1981 after 253 days. Wait on weather and non-productive time accounted for 3.7 percent and 1.6 percent of total time. The most significant non-productive time delays were due to rig operations. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 5039 meters (MD) was reached after 63.7 days of drilling time. The average rate of penetration for the well was 3.2 meters per hour and at the total depth the rate was 1.7 meters per hour. Water based muds with weights ranging from 1050 to 1905 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in this well. The well was classified as an oil well and has been plugged and abandoned (Mobil Oil Canada Limited, 1982).

341


Well Name: Mobil et al Hibernia K-18

Well Summary

Well Date: February 26, 1981 - November 6, 1981

Genera l Overview Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built)

Jeanne d'Arc Jeanne d'Arc Winter - Spring - Summer - Fall 78.3 Exploration Ocean Ranger (Odeco - 1976) Zapata Ugland (Zapata Offshore Drilling Company - 1974)


Both 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dri lli ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

5039.5 NA 4931.4 1050 - 1905 Water Based

Ti me Ana lysi s (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 253.0 63.7 4.1 9.5 0.0 50.2 125.5

Perf orma nce Metri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

19.5 51.3 24.3 1.6% 3.7%

Dri lli ng Metri cs ROP while drilling (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mini mum 0.1 0.1 0.4 1.6

Avera g e 3.2 3.0 1.6 12.9

Ma ximum 26.7 16.5 2.4 615.2

342


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Hibernia K-18 - Time Distribution




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344


West Flying Foam L-23 West Flying Foam L-23, operated by Mobil Oil Canada Limited, was an exploration well drilled during the fall of 1981 and the winter and spring of 1982 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 92 meters, West Flying Foam L-23 was drilled using Zapata Offshore Drilling Limited’s Zapata Ugland, a second generation, moored semi-submersible rig. The well was spudded on November 8, 1981 and operations were completed on April 15, 1982 after 188 days. The well had to be re-spudded on November 11, 1981 due to stuck pipe. Wait on weather and non-productive time accounted for 6.8 percent and 29.1 percent of total time. The most significant source of non-productive delay was when the rig was removed from the well site from February 18 until April 15, 1982 for a safety inspection. Total depth of 4554 meters (MD) had been reached prior to the safety inspection and when the rig returned to site, the hole had to be reamed from 3750 meters to total depth again. However, while pulling out at 3795 meters (MD), the pipe stuck and fishing operations were unsuccessful so the well operations were suspended. There were no reports of wait on ice or HSE or lost time incidents during operations. Total depth of 4554 meters (MD) was reached after 40.9 days in drilling time. The average ROP for the well was 4.5 meters per hour and water based muds with weights ranging from 1020 to 1115 kg/m3 were used to drill the well. Tertiary and Cretaceous aged intervals were encountered in this well. Upon evaluation of the Cretaceous formations, no hydrocarbon bearing reservoirs were found and the well was plugged and abandoned (Mobil Oil Canada Limited, 1982). Assumptions: There was no bit record in the end of well report for West Flying Foam L-23, therefore, not all drilling metrics have been calculated. Drilling time is taken from the stated drill time in the well report. A ROP while drilling and days per 1000 meters while drilling has been calculated based on the drill time given and the total number of meters drilled. As well, due to lack of information, days versus depth plot has not be calculated for this well.

345


Well Name: Mobil et al West Flying Foam L-23

Well Summary

Well Date: November 8, 1981 - May 7, 1982



Eastern Newfoundland Jeanne d'Arc Fall - Winter - Spring 92.0 Exploration Zapata Ugland (Zapata Offshore Drilling Ltd - 1974) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4554.0 NA 4435.2 1020 - 1115 Water Based


NA 188.0 40.9 54.7 12.8 0.0 12.1 67.6


23.6 42.4 25.2 29.1% 6.8%

Dr i l li ng M etr ics ROP while drilling (m/hr) Days/1000 meters while drilling (days)

Mi ni mum NA NA


Aver a ge 4.5 9.2

M axi mum NA NA

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West Flying Foam L-23 - Time Distribution



Drilling Time 22%


347


Rankin M-36 Rankin M-36, operated by Mobil Oil Canada Limited, was an exploration well drilled during the spring and summer of 1983 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 72 meters, Rankin M-36 was drilled using Zapata Offshore Drilling Company’s Zapata Ugland, a second generation, moored semi-submersible rig. The well was spudded on April 2, 1983 and operations were completed on August 6, 1983 after 129.5 days. Wait on weather and non-productive time accounted for 0.4 percent and 29.3 percent of total time. Non-productive time delays were mainly as a result of 31.1 days of ice related delays. There were no reports of HSE or lost time incidents during operations. Total depth of 3967 meters (MD) was reached after 33.3 days in drilling time. The average ROP for the well was 4.9 meters per hour and at the total depth the rate was 1.3 meters per hour. Water based muds with weights ranging from 1018.5 to 1294.1 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Jurassic aged intervals but there were no significant hydrocarbons found and the well was plugged and abandoned (Mobil Oil Canada Limited, 1984).

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Well Name: Mobil et al Rankin M-36

Well Summary


General Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Jeanne d'Arc Jeanne d'Arc Spring - Summer 72.4 Exploration Zapata Ugland (Zapata Offshore Drilling - 1974) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dri ll i ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3967.3 NA 3881.6 1018.5 - 1294.1 Water Based

Ti me Anal ysi s (D ays) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

120.0 129.5 33.3 6.9 0.5 31.1 10.4 47.4

Per for mance M etri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

30.0 33.4 32.6 29.3% 0.4%

Dri ll i ng Metr ics ROP while drilling (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

M inimum 0.5 4.4 0.5 1.8

Avera ge 4.9 7.0 3.1 8.6

Ma xi mum 23.8 15.2 4.4 82.0

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Drilling Time 26%


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351


White Rose N-22 White Rose N-22, operated by Husky Oil Operations Limited, was an exploration well drilled during the summer and fall of 1984 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 122 meters, White Rose N-22 was drilled using Sedco International’s Sedco 706, a second generation, moored semi-submersible rig. The well was spudded on June 27, 1984 and operations were completed on January 5, 1985 after 193.1 days. Wait on weather and non-productive time accounted for 1.9 percent and 11.3 percent of total time. The most significant non-productive time delays were due to 10 days in ice delays and 4 days on hole stability issues. There were no reports of HSE or lost time incidents during operations. Total depth of 4627.8 meters (MD) was reached after 63.2 days in drilling time. The average ROP for the well was 3.0 meters per hour and at the total depth the rate was 1.4 meters per hour. Water based muds with weights ranging from 1030.5 to 1545.8 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals. Drill stem tests were performed over six zones of the well and five showed measurable hydrocarbons. The well was classified as an oil and gas well and plugged and abandoned (Husky/Bow Valley East Coast Project, 1985).

352


Well Name: Husky/Bow Valley et al White Rose N-22

Well Summary

Well Date: June 27, 1984 - January 5, 1985


Jeanne d'Arc Jeanne d'Arc Summer - Fall - Winter 122.0 Exploration Sedco 706 (Sedco International - 1976) 2nd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4627.8 NA 4478.4 1030.5 - 1545.8 Water Based


160.0 193.1 63.2 11.9 3.6 10.0 45.8 58.7


23.2 43.1 30.4 11.3% 1.9%


Mi ni mum 0.9 2.4 0.9 0.9 1.9

Aver a ge 3.0 13.2 1.8 1.4 14.1

M axi mum 22.4 22.4 8.4 1.7 46.0

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White Rose N-22 - Time Distribution Other Rig Operations 30%


Drilling Time 33%


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Terra Nova K-18 Terra Nova K-18, operated by Petro-Canada Incorporated, was a delineation well drilled during the summer and fall of 1984 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 91.4 meters, Terra Nova K-18 was drilled using Sedco International’s Sedco 710, a third generation, semi-submersible with dynamic positioning and mooring capabilities. The well was spudded on July 19, 1984 and operations were completed on November 25, 1984 after 129.3 days. Wait on weather and non-productive time accounted for 2.6 percent and 27.6 percent of total time. The most significant non-productive time delays were due to BOP repairs and problems with the wellhead. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3925 meters (MD) was reached after 32.0 days in drilling time. The average ROP for the well was 5.0 meters per hour and at the total depth the rate was 2.6 meters per hour. Water based muds with weights ranging from 1020 to 1162 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered while drilling Terra Nova K-18. There were hydrocarbons found while drilling the well and five drill stem tests were performed. The well was classified as an oil show and has been plugged and abandoned (Petro-Canada Incorporated, 1985).

356


Well Name: Petro-Canada et al Terra Nova K-18

Well Summary

Well Date: July 19, 1984 - November 25, 1984

Genera l Overview Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Jeanne d'Arc Jeanne d'Arc Summer -Fall 91.4 Delineation Sedco 710 (Sedco International - 1982) 3rd Gen, Semi-submersible, DP & Moored Plugged and Abandoned None Reported

D rill ing Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3925.0 3915.0 3809.0 1020 - 1162 Water Based

Time Analysi s (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 129.3 32.0 35.0 3.3 0.0 25.1 33.9

Performance Metri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

29.5 33.9 36.6 27.1% 2.6%

D rill ing Metrics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.4 4.5 3.2 0.4 0.9

Avera ge 5.0 27.2 6.0 2.4 8.4

M aximum 45.4 45.4 9.5 4.5 109.0

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Terra Nova K-18 - Time Distribution Other Rig Operations 26%


Drilling Time 25%


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359


Conquest K-09 Conquest K-09, operated by Husky Oil Operations Limited, was an exploration well drilled from the fall of 1984 until the summer of 1985 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 136 meters, Conquest K-09 was drilled using Bow Valley Offshore Drilling’s Bow Drill 2, a third generation, moored semi-submersible rig. The well was spudded on November 13, 1984 and operations were completed on July 26, 1985 after 255.9 days. Wait on weather and non-productive time accounted for 2.9 percent and 55.8 percent of total time. The non-productive delays were mostly attributed to wait on ice time which totaled 104 days. As well there were other issues such as well control issues due to problems with high gas units and fishing and casing issues. There were no reports of HSE or lost time incidents. Total depth of 4968 meters (MD) was reached after 37.2 days in drilling time and the average ROP for the well was 5.4 meters per hour and at the total depth the rate was 2.1 meters per hour. Water based muds with weights ranging from 1030 to 2001 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered while drilling Conquest K-09. There were no significant hydrocarbon accumulations encountered during drilling and the well was plugged and abandoned (Husky Oil Operations Limited, 1986).

360


Well Name: Husky-Bow Valley et al Conquest K-09

Well Summary

Well Date: November 13, 1984 - July 26, 1985

Genera l Overview Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Eastern Newfoundland Jeanne d'Arc Fall - Summer 136.0 Exploration Bow Drill 2 (Bow Valley Offshore Drilling - 1983) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dril l ing Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

4968.0 NA 4809.6 1030 - 2001 Water Based


191.0 255.9 37.2 38.8 7.5 104.0 6.5 61.9


18.8 53.2 19.3 55.8% 2.9%

Dril l ing M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.5 0.5 2.5 1.1 1.2


Aver age 5.4 6.9 3.3 4.4 7.7

M axi mum 34.0 34.0 4.9 5.2 78.1

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Conquest K-09 - Time Distribution Other Rig Operations 24%

Drilling Time 15%



362


363


North Ben Nevis P-93 North Ben Nevis P-93, operated by Husky Oil Operations Limited, was an exploration well drilled during 1984 and 1985 in the Jeanne d’Arc basin on the Newfoundland Grand Banks. At a water depth of 99.0 meters, North Ben Nevis P-93 was drilled using Bow Valley Industry’s Bow Drill 3, a third generation, moored semi-submersible rig. The well was spudded on December 18, 1984 and operations were completed on November 1, 1984 after 289.5 days. Wait on weather and non-productive time accounted for 1.7 percent and 31.5 percent of total time. The most significant non-productive time delay was caused by wait on ice which accounted for 68.6 of the 91.2 days of problem time. There were no reports of HSE or lost time incidents during operations. Total depth of 5282.2 meters (MD) was reached after 70.3 days in drilling time. The average rate of penetration for the well was 3.1 meters per hour and at the total depth the rate was 1.2 meters per hour. The well encountered Tertiary, Cretaceous and Jurassic aged intervals and there were five drill stem tests performed on the well. It has been classified as an oil and gas well and has been plugged and abandoned (Husky Oil Operations Limited, 1985).

364


Well Name: Husky-Bow Valley et al North Ben Nevis P-93

Well Summary

Well Date: December 18, 1984 - November 1, 1985


Jeanne d'Arc Jeanne d'Arc Winter - Spring - Summer - Fall 99.0 Exploration Bow Drill 3 (Bow Valley Industries - 1984) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


5282.2 5273.3 5160.9 NA NA


196.0 289.5 70.3 22.6 5.0 68.6 44.3 78.6


17.8 56.1 21.1 31.5% 1.7%

Dri l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

M i ni mum 0.1 7.7 0.1 1.2 1.5

Avera ge 3.1 15.0 2.1 1.2 13.6

M ax imum 28.5 28.5 7.7 1.2 355.4

365


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North Ben Nevis P-93 - Time Distribution Other Rig Operations 27%


Drilling Time 24%


366


367


North Trinity H-71 North Trinity H-71, operated by Petro Canada Incorporated, was a delineation well drilled during the winter through the summer of 1985 in the Jeanne d’Arc basin on the Newfoundland Grand Banks. At a water depth of 97.8 meters, North Trinity H-71 was drilled using Sverre Ditlev-Simonsen SDS Vinland, a third generation, semi-submersible rig. The well was spudded on January 27, 1985 and operations were temporarily abandoned due to ice for 45 days until March 27, 1985. The well was completed on September 2, 1985 after 217.9 days. Wait on weather and non-productive time accounted for 1.1 percent and 39.3 percent of total time. The most significant non-productive time delays were due to wait on ice which accounted for 63.6 of the 85.7 days of problem time. There were no reports of HSE or lost time incidents during operations. Total depth of 4758 meters (MD) was reached after 50.3 days in drilling time. The average rate of penetration for the well was 3.8 meters per hour and at the total depth the rate was 2.5 meters per hour. Synthetic based muds with weights ranging from 1055 to 2109 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered while drilling North Trinity H-71. The well has been classified as an oil show and was plugged and abandoned (Petro-Canada Incorporated, 1985).

368


Well Name: Petro Canada et al North Trinity H-71

Well Summary

Well Date: January 27, 1985 - September 2, 1985


Jeanne d'Arc Jeanne d'Arc Winter - Spring - Summer 97.8 Delineation SDS Vinland (Sverre Ditlev-Simonsen - 1982) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4758.0 NA 4622.0 1055 - 2109 Synthetic Based


NA 217.9 50.3 22.0 2.5 63.6 21.3 58.1


21.2 47.1 23.5 39.3% 1.1%


Mi ni mum 0.7 12.5 0.7 0.8 2.1

Aver a ge 3.8 12.8 3.8 2.0 10.9

M axi mum 20.1 13.2 12.5 3.4 64.0

369


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North Trinity H-71 - Time Distribution Other Rig Operations 27%

Drilling Time 23%



370


371


Fortune G-57 Fortune G-57, operated by Husky Oil Operations Limited, was an exploration well drilled during the winter through to the summer of 1986 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 113.4 meters, Fortune G-57 was drilled using Bow Valley Offshore’s Bow Drill 3, a third generation, moored semi-submersible rig. The well was spudded on February 5, 1986 and operations were completed on September 9, 1986 after 201.5 days. Wait on weather and non-productive time accounted for 0.2 percent and 22.8 percent of total time. The rig had to be moved off location twice due to ice conditions. Other non-productive time delays included formation evaluation issues and BOP equipment repairs. There were no reports of HSE or lost time incidents during operations. Total depth of 4995.1 meters (MD) was reached after 55.4 days in drilling time. The average ROP for the well was 3.6 meters per hour and at the total depth, in the Jurassic aged formations, the rate was 3.4 meters per hour. Water based muds with weights ranging from 1210 to 2070 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in the well. Upon evaluation, hydrocarbons were found and Fortune G-57 was classified as an oil well. It has been plugged and abandoned (Husky Oil Operations Limited, 1987).

372


Well Name: Husky-Bow Valley et al Fortune G-57

Well Summary

Well Date: February 5, 1986 - September 9, 1986


Jeanne d'Arc Jeanne d'Arc Winter - Spring - Summer 113.4 Exploration Bow Drill 3 (Bow Valley Offshore - 1984) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4995.1 4925.3 4856.2 1210 - 2070 Water Based


130.0 201.5 55.4 35.7 0.4 10.3 37.5 62.2


24.1 41.5 29.6 22.8% 0.2%


Mi ni mum 0.6 0.6 0.6 0.6 0.8

Aver a ge 3.6 11.8 2.6 2.3 11.4

M axi mum 53.5 53.5 8.3 3.8 69.8

373


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Fortune G-57 - Time Distribution Other Rig Operations 31%


Drilling Time 27%

Wait on Weather 0%


374


375


South Merasheen K-55 South Merasheen K-55, operated by Texaco Canada Enterprises Limited, was an exploration well drilled during the fall of 1988 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 167 meters, South Merasheen K-55 was drilled using Maersk Company Limited’s Vinlander, a third generation, moored semi-submersible rig. The well was spudded on October 25, 1988 and operations were completed on December 23, 1988 after 61.2 days. Wait on weather and non-productive time accounted for 3.6 percent and 11.9 percent of total time. The most significant non-productive time delays were due to rig and equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3545.1 meters (MD) was reached after 26.5 days in drilling time. The average ROP for the well was 5.3 meters per hour and at the total depth the rate was 2.0 meters per hour. Water based muds with weights ranging from 1030 to 1282 kg/m3 were used to drill the well until 2165.6 meters (MD) when it was switched to a synthetic based mud with weights ranging from 1066 to 1258 kg/m3 until total depth. Tertiary, Cretaceous and Jurassic aged intervals were encountered in the well but there were no hydrocarbons found during drilling and the well was plugged and abandoned without conducting testing (Texaco Canada Enterprises Limited, 1989).

376


Well Name: Texaco et al South Merasheen K-55

Well Summary

Well Date: October 25, 1988 - December 23, 1988

Genera l Overvi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Jeanne d'Arc Jeanne d'Arc Fall 167.0 Exploration Maersk Vinlander (Maersk Company Ltd - 1983) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dr il l i ng D ata Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type


Ti me Ana l ysis (D ays) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 61.2 26.5 7.3 2.2 0.0 2.9 22.3

Performa nce Metr i cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

54.9 18.2 57.7 11.9% 3.6%

Dr il l i ng M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) Days/1000 meters while drilling (days)

Mini mum 2.0 5.2 17.6 2.0 1.6

Aver ag e 5.3 8.5 17.6 2.6 7.9

Max i mum 25.9 25.9 17.6 17.6 21.2

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South Merasheen K-55 - Time Distribution



Drilling Time 43%


378


379


King's Cove A-26 King’s Cove A-26, operated by Petro-Canada Incorporated, was an exploration well drilled during the spring of 1990 in the Jeanne d’Arc Basin on the Newfoundland Grand Banks. At a water depth of 91.9 meters, King’s Cove A-26 was drilled using Sedco International’s Sedco 710, a third generation, semisubmersible rig with dynamic positioning and mooring capabilities. The well was spudded on March 6, 1990 and operations were completed on June 17, 1990 after 109 days. Wait on weather and non-productive time accounted for 5 percent and 48.2 percent of total time. The most significant non-productive time delays were due to wait on ice which accounted for 41.4 days of delay. There were no reports of HSE or lost time incidents during operations. Total depth of 3092 meters (MD) was reached after 14.8 days in drilling time. The average ROP for the well was 8.4 meters per hour and at the total depth the rate was 4.0 meters per hour. Water based muds with weights ranging from 1066.5 to 1138.4 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in King’s Cove A-26. Hydrocarbons were indicated in this well and three drill stem tests were performed but two were misruns. The well has been classified as an oil well and was plugged and abandoned (Petro-Canada Incorporated, 1990).

380


Well Name: Petro-Canada et al King's Cove A-26

Well Summary

Well Date: March 6, 1990 - June 17, 1990


Jeanne d'Arc Jeanne d'Arc Spring 91.9 Exploration Sedco 710 (Sedco International - 1982) 3rd Gen, Semi-submersible, DP & Moored Plugged and Abandoned None Reported


3092.0 NA 2976.0 1066.5 - 1138.4 Water Based


NA 109.0 14.8 11.1 5.5 41.4 12.5 23.7


27.3 36.6 30.8 48.2% 5.0%


Mi ni mum 4.0 10.3 5.0 4.0 1.6

Aver a ge 8.4 18.3 6.3 4.3 5.0

M axi mum 26.3 19.8 10.3 5.5 10.4

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King's Cove A-26 - Time Distribution Other Rig Operations 22%

Drilling Time 14%



382


Brent's Cove I-30 Brent’s Cove I-30, operated by Petro-Canada Incorporated, was an exploration well drilled during the spring and summer of 1999 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 91 meters, Brent’s Cove I-30 was drilled using Glomar International’s Glomar Grand Banks, a third generation, moored semi-submersible rig. The well was spudded on May 12, 1999 and operations were completed on July 10, 1999 after 60.5 days. Wait on weather and non-productive time accounted for 20.5 percent of total time. The most significant non-productive time delays were due to data acquisition issues. There were no reports of ice delays and one report of a HSE incident during operations but it was not a lost time incident. Total depth of 4070 meters (MD) was reached after 22.2 days in drilling time. The average ROP for the well was 7.4 meters per hour and at the total depth the rate was 2.3 meters per hour. Water based muds with weights ranging from 1018.5 to 1437.9 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in the well. No tests were performed and the well was plugged and abandoned (Petro-Canada Incorporated, 1999).

383


Well Name: Petro-Canada et al Brent's Cove I-30

Well Summary

Well Date: May 12, 1999 - July 10, 1999



Jeanne d'Arc Jeanne d'Arc Spring - Summer 91.0 Exploration Glomar Grand Banks (Glomar International - 1984) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned 1


4070.0 4065.7 3956.2 1018.5 - 1437.9 Water Based


NA 60.5 22.2 12.4 0.0 0.0 4.0 21.9


65.4 15.3 70.0 20.5% 0.0%


Mi ni mum 2.3 24.0 3.7 2.3 0.8


Aver a ge 7.4 24.8 8.5 3.5 5.6

M ax i mum 49.6 49.6 24.0 4.4 18.4

384


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Brent's Cove I-30 - Time Distribution



Drilling Time 37%


385


386


Hebron M-04 Hebron M-04, operated by Chevron Canada Resources Limited, was a delineation well drilled during the winter and spring of 2000 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 92.8 meters, Hebron M-04 was drilled using Glomar International’s Glomar Grand Banks, a third generation, moored semi-submersible rig. The well was spudded on February 12, 2000 and operations were completed on May 31, 2000 after 110.2 days. Wait on weather and non-productive time accounted for 1.3 percent and 21.4 percent of total time. The most significant non-productive time delays were due to wait on ice and data acquisition issues. There was one report of a HSE incident during operations but it was not considered a lost time incident. Total depth of 4587 meters (MD) was reached after 29 days in drilling time. The average ROP for the well was 6.4 meters per hour and at the total depth the rate was 1.9 meters per hour. Synthetic based muds with weights ranging from 1138.4 to 1557.7 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in the well and it has been plugged and abandoned (Chevron Canada Resources Limited, 2000).

387


Well Name: Chevron et al Hebron M-04

Well Summary

Well Date: February 12, 2000 - May 31, 2000



Jeanne d'Arc Jeanne d'Arc Winter - Spring 92.8 Delineation Glomar Grand Banks (Glomar International - 1984) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned 1


4587.0 NA 4471.0 1138.4 - 1557.7 Synthetic Based


NA 110.2 29.0 15.0 1.4 8.5 14.8 41.4


40.6 24.6 46.9 21.4% 1.3%


Mi ni mum 1.1 9.7 2.5 1.1 0.7


Aver a ge 6.4 45.9 7.2 2.6 6.5

M ax i mum 60.4 60.4 43.8 17.3 36.7

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Hebron M-04 - Time Distribution

Drilling Time 26%




389


390


North Amethyst K-15 North Amethyst K-15, operated by Husky Oil Operations Limited, was an exploration well drilled during the fall of 2006 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 119 meters, North Amethyst K-15 was drilled using Rowan Companies’ Rowan Gorilla VI, a high specification jack-up rig. The well was spudded on October 16, 2006 and operations were completed on November 12, 2006 after 27 days. Wait on weather and non-productive time accounted for 1.6 percent and 3.2 percent of total time. There were no ice-related or HSE incidents reported during operations. Total depth of 2566 meters (MD) was reached after 3.2 days in drilling time. The average ROP for the well was 31.5 meters per hour and at the total depth the rate was 10.6 meters per hour. Synthetic based muds with weights ranging from 1180 to 1200 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals and the well was plugged and abandoned (Husky Oil Operations Limited, 2007).

391


Well Name: Husky Oil et al North Amethyst K-15

Well Summary

Well Date: October 16, 2006 - November 12, 2006

General Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Jeanne d'Arc Jeanne d'Arc Fall 119.0 Exploration Rowan Gorilla VI (Rowan Companies - 2000) High Specification Jack-up Plugged and Abandoned None Reported


2566.0 2565.9 2400.0 1180 - 1200 Synthetic Based

Ti me Anal ysi s (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

34.2 27.0 3.2 0.9 0.4 0.0 4.4 18.1

Per formance Metr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

89.0 11.2 106.4 3.2% 1.6%

Dri ll i ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

M ini mum 10.6 20.8 10.6 0.8

Avera ge 31.5 38.7 15.9 1.3

M axi mum 53.2 53.2 34.0 3.9

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North Amethyst K-15 - Time Distribution Drilling Time Non Productive 12% Time 3% Wait on Weather 2% Data Acquisition 16%


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394


Ballicatters M-96 Ballicatters M-96, operated by Petro-Canada Incorporated, was an exploration well drilled during the summer and fall of 2009 in the Jeanne d’Arc basin on the Newfoundland Grand Banks. At a water depth of 101.4 meters, Ballicatters M-96 was drilled using Transocean’s Henry Goodrich, a third generation, moored semi-submersible rig. The well was spudded on July 23, 2009 and operations were completed on October 27, 2009 after 98.1 days. Wait on weather and non-productive time accounted for 3.9 percent and 10.8 percent of total time. Non-productive time varied from delays caused by casing and wellhead issues and well control problems. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4017 meters (MD) was reached after 19.1 days in drilling time. The average ROP for the well was 8.5 meters per hour and at the total depth the rate was 5.5 meters per hour. Synthetic based muds with weights ranging from 1200 to 1690 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals during drilling and it has been plugged and abandoned (PetroCanada Incorporated, 2010).

395


Well Name: Petro-Canada et al Ballicatters M-96

Well Summary



Jeanne d'Arc Jeanne d'Arc Summer - Fall 101.4 Exploration Henry Goodrich (Transocean - 1985) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4017.0 3890.6 3896.0 1200 -1690 Synthetic Based


67.0 98.1 19.1 10.6 3.8 0.0 8.9 55.6


39.7 25.2 43.7 10.8% 3.9%


Mi ni mum 0.4 2.9 0.4 1.1

Aver a ge 8.5 5.2 4.7 4.9

M axi mum 36.6 29.6 24.3 104.2

396


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Ballicatters M-96 - Time Distribution Drilling Time 19%



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398


Searcher C-87 Searcher C-87, operated by Husky Oil Operations Limited, was an exploration well drilled during the summer and fall of 2012 and 2013 in the Jeanne d’Arc basin on the Newfoundland Grand Banks. At a water depth of 121.2 meters, Searcher C-87 was drilled using Transocean’s Henry Goodrich and GSF Grand Banks, both third generation, semi-submersible rigs. The well was spudded on August 3, 2012 and operations were temporarily abandoned on August 23, 2012. The well was re-entered on November 15, 2012 and completed operations on January 15, 2013 after 116.5 days. Wait on weather and non-productive time accounted for 29.6 percent and 23.1 percent of total time. The most significant non-productive time delays were due to problems with both the temporary and final abandonment of the well. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 2033 meters (MD) was reached after 8 days in drilling time. The average ROP for the well was 9.9 meters per hour and at total depth the rate was 5.5 meters per hour. Synthetic based muds with weights ranging from 1030 to 1500 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in the well and it has been plugged and abandoned (Husky Oil Operations Limited, 2009).

399


Well Name: Husky Oil Exploration Searcher C-87

Well Summary

Well Date: August 3, 2012 - January 15, 2013


Jeanne d'Arc Jeanne d'Arc Summer - Fall 121.2 Exploration Henry Goodrich (Transocean - 1985) GSF Grand Banks (Transocean - 1984) Both 3rd Gen, Semi-submersibles Plugged and Abandoned None Reported


2033.0 2033.0 1889.5 1030 - 1500 Synthetic Based


49.8 116.5 8.0 26.9 34.5 0.0 4.0 43.2


16.2 61.7 16.8 23.1% 29.6%


Mi ni mum 1.2 1.2 5.5 5.5 2.1

Aver a ge 9.9 12.5 5.5 5.5 4.2

M ax i mum 19.7 19.7 5.5 5.5 35.2

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Searcher C-87 - Time Distribution Drilling Time 7% Other Rig Operations 37%

Data Acquisition 3%


Wait on Weather 30%

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402


Federation K-87 Federation K-87, operated by Statoil Canada Limited, was an exploration well drilled during the summer of 2013 in the Jeanne d’Arc area on the Newfoundland Grand Banks. At a water depth of 103.0 meters, Federation K-87 was drilled using Seadrill’s West Aquarius, a sixth generation, semi-submersible with dynamic positioning and mooring capabilities. The well was spudded on June 16, 2013 and operations were completed on July 13, 2013 after 27.2 days. Non-productive time accounted for 2.5 percent of total time. There were no reports of wait on weather or ice delays during this well. There were two HSE incidents but neither was classified as lost time incidents. Total depth of 1874.0 meters (MD) was reached after 2.5 days in drilling time. The average ROP for the well was 29.4 meters per hour and at the total depth the rate was 19.9 meters per hour. Synthetic based muds with weights ranging from 1030 to 1150 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered in the well but there were no significant hydrocarbons found and the well was plugged and abandoned (Statoil Canada Limited, 2013).

403


Well Name: Statoil et al Federation K-87

Well Summary

Well Date: June 16, 2013 - July 13, 2013


Jeanne d'Arc Jeanne d'Arc Summer 103.0 Exploration West Aquarius (Seadrill - 2009) 6th Gen, Semi-submersible, DP & Moored Plugged and Abandoned 2


1874.0 1874.0 1740.0 1030 - 1150 Synthetic Based


34.3 27.2 2.5 0.7 0.0 0.0 2.7 21.3


64.1 15.6 71.1 2.5% 0.0%


Mi ni mum 12.9 12.9 19.9 19.9 0.8

Aver a ge 29.4 41.7 19.9 19.9 1.4

M axi mum 51.2 51.2 19.9 19.9 3.2

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Federation K-87 - Time Distribution Drilling Time 9%

Non Productive Time 3% Data Acquisition 10% Wait on Weather 0%


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406


Appendix D: Individual Well Summary Reports – South Newfoundland Area

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Appendix D: Table of Contents Tors Cove D-52 ................................................................................................................................... 409 Grand Falls H-09 ................................................................................................................................. 413 Eider M-75 ......................................................................................................................................... 417 Gannet O-54 ....................................................................................................................................... 421 Puffin B-90 ......................................................................................................................................... 425 Hermine E-94 ..................................................................................................................................... 429 Petrel A-62 ......................................................................................................................................... 433 Shearwater J-20.................................................................................................................................. 437 Bittern M-62 ....................................................................................................................................... 440 Kittiwake P-11 .................................................................................................................................... 444 Heron H-73......................................................................................................................................... 448 Jaeger A-49 ........................................................................................................................................ 452 Gull F-72 ............................................................................................................................................. 455 Merganser I-60 ................................................................................................................................... 458 Tern A-68 ........................................................................................................................................... 462 Mallard M-45 ..................................................................................................................................... 466 Razorbill F-54 ..................................................................................................................................... 470 Sandpiper J-77 .................................................................................................................................... 474 Sandpiper 2J-77 .................................................................................................................................. 478 Heron J-72 .......................................................................................................................................... 482 Osprey G-84 ....................................................................................................................................... 486 Spoonbill C-30 .................................................................................................................................... 490 Pelican J-49 ........................................................................................................................................ 494 Brant P-87 .......................................................................................................................................... 498 Bonnition H-32 ................................................................................................................................... 502 Emerillon C-56 .................................................................................................................................... 506 Coot K-56 ........................................................................................................................................... 510 Twillick G-49 ....................................................................................................................................... 514 Carey J-34........................................................................................................................................... 518 Skua E-41 ........................................................................................................................................... 522 Phalarope P-62 ................................................................................................................................... 526 St. George J-55 ................................................................................................................................... 530 Narwhal F-99 ...................................................................................................................................... 534 Lewis Hill G-85 .................................................................................................................................... 538 East Wolverine G-37 ........................................................................................................................... 542

408


Tors Cove D-52 Tors Cove D-52, operated by Pan American Petroleum Corporation, was the first exploration well drilled offshore Newfoundland and Labrador. It was drilled during the spring and summer of 1966 in the South Whale basin of the Southern Newfoundland area. At a water depth of 89.3 meters, Tors Cove D-52 was drilled using Global Marine’s Glomar Sirte, a first generation, moored drillship. The well was spudded on June 7, 1966 and operations were completed on August 12, 1966 after 69 days. Wait on weather and non-productive time accounted for 18.8 percent and 10.1 percent of total time. There were no reports of ice delays or HSE or lost time incidents. Total depth of 1473.4 meters (MD) was reached after 4.5 days in drilling time. The average rate of penetration for the well was 12.8 meters per hour and at the total depth the rate was 8.5 meters per hour. Water based muds with weights ranging from 1114.4 to 1306.1 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Jurassic aged intervals as well as salt. The well was plugged and abandoned (Pan American Petroleum Corporation, 1967). Assumptions: There was no time breakdown for this well so the time for wait on weather, non-productive time, data acquisition and other rig operations was calculated based on the daily planner for the well. This means that if a day was classified as wait on weather, 24 hours were added to wait on weather. If it says wait on weather and logging, 12 hours were added to wait on weather and 12 to data acquisition. Drill time was calculated based on the bit record.

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Well Name: Pan Am - 10E - A-1 Tors Cove D-52

Well Summary


General Overview Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Newfoundland South Whale Spring - Summer 89.3 Exploration Glomar Sirte (Global Marine - 1965) 1st Gen, Drillship Plugged and Abandoned None Reported


1473.4 NA 1384.1 1114.4 - 1306.1 Water Based


NA 69.0 4.5 7.0 13.0 0.0 5.0 39.5

Perfor manc e M etri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

20.1 49.9 21.6 10.1% 18.8%

Dr il li ng M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi nim um 4.4 4.4 11.3 7.7 6.8 1.4

Averag e 12.8 16.9 11.3 9.4 7.3 3.3

Ma xim um 29.5 29.5 11.3 11.3 8.5 9.5

410


Tors Cove D-52 - Time Depth Plot Time (days) 0

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1000 South NL Area Minimum (m) 2000

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Tors Cove D-52 - Time Distribution Drilling Time Non Productive 7% Time 10%


Wait on Weather 19%

Data Acquisition 7%

411


412


Grand Falls H-09 Grand Falls H-09, operated by Pan American Petroleum Corporation, was an exploration well drilled during the summer and fall of 1966 in the Whale basin of the South Newfoundland area. At a water depth of 78 meters, Grand Falls H-09 was drilled using Global Marine’s Glomar Sirte, a first generation, moored drillship. The well was spudded on August 16, 1966 and operations were completed on October 20, 1966 after 65 days. Non-productive time accounted for 1.3 percent of total time and was caused by fishing operations. Wait on weather delays made up 31.3 percent of total time. At one point, the rig was moved off site to wait out bad weather and weather ultimately prevented the well from reaching the targeted total depth. There were no reports of ice delays or HSE or lost time incidents. Total depth of 1600.2 meters (MD) was reached after 7.0 days of drilling time. The average ROP for the well was 9.7 meters per hour and at the total depth the rate was 5.3 meters per hour. Water based muds with weights ranging from 1078.4 to 1222.2 kg/m3 were used to drill the well. Tertiary, Cretaceous and Jurassic aged intervals were encountered. The well was plugged and abandoned (Pan American Petroleum Corporation, 1968). Assumptions: The well was drilled to 1585.9 meters (MD) and then had to be plugged and sidetracked at 1463.0 meters (MD) until total depth of 1600.2 meters. There was no time breakdown for this well so the time for wait on weather, non-productive time, data acquisition and other rig operations was calculated based on the daily planner for the well. This means that if a day was classified as wait on weather, 24 hours were added to wait on weather. If it says wait on weather and logging, 12 hours were added to wait on weather and 12 to data acquisition. Drill time was calculated based on the bit record.

413


414


Grand Falls H-09 - Time Depth Plot Time (days) 0

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South NL Area Maximum (m) Grand Falls H-09

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Grand Falls H-09 - Time Distribution Drilling Time 11%



Wait on Weather 31%

Data Acquisition 4%

415


416


Eider M-75 Eider M-75, operated by Amoco Imperial, was an exploration well drilled during the spring and summer of 1971 in the Whale basin of the South Newfoundland area. At a water depth of 77.7 meters, Eider M75 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on April 18, 1971 and operations were completed on July 9, 1971 after 83.5 days. Wait on weather and non-productive time accounted for 2.2 percent and 1.7 percent of total time. Nonproductive time was mostly because of repairs to subsea equipment but there were no significant issues on this well. As well, there were no reports of ice delays or HSE or lost time incidents. Total depth of 3530.2 meters (MD) was reached after 37.8 days in drilling time. The average ROP for the well was 3.8 meters per hour and at the total depth the rate was 1.4 meters per hour. Water based muds with weights ranging from 1078.4 to 1282.1 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals, however, there were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited , 1972).

417


Well Name: Amoco - I.O.E A-1 Eider M-75

Well Summary

Well Date: April 18, 1971 - July 9, 1971


South Eastern Newfoundland Whale Spring - Summer 77.7 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3530.2 NA 3401.3 1078.4 - 1282.1 Water Based


67.0 83.5 37.8 1.5 1.8 0.0 7.3 35.2


40.8 24.5 44.6 1.7% 2.2%


Mi ni mum 1.2 17.5 17.7 1.2 2.1

Aver a ge 3.8 17.6 19.4 3.1 11.1

M ax i mum 20.2 20.2 20.2 17.7 33.4

418


Eider M-75 - Time Depth Plot Time (days) 0

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1000 South NL Area Minimum (m) South NL Area Maximum (m) Eider M-75

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Eider M-75 - Time Distribution


Drilling Time 45%

Data Acquisition 9%

Non Productive Wait on Weather Time 2% 2%

419


420


Gannet O-54 Gannet O-54, operated by Amoco Canada, was an exploration well drilled during the fall of 1971 and winter and spring of 1972 in the Whale basin of the South Newfoundland area. At a water depth of 100 meters, Gannet O-54 was drilled using Sedco International’s Sedco I, a first generation, moored semisubmersible rig. The well was spudded on September 24, 1971 and operations were suspended on September 27, 1971 after 4 days. The well was re-entered on March 6, 1972 and completed on April 24, 1972 with a total time of well of 61.6 days. Wait on weather and non-productive time accounted for 7.6 percent and 11.9 percent of total time. The most significant non-productive time delays were due to fishing operations. As well, there were no reports of ice delays or HSE or lost time incidents. Total depth of 3048 meters (MD) was reached after 16.8 days in drilling time. The average ROP for the well was 7.2 meters per hour and at the total depth the rate was 3.5 meters per hour. Water based muds with weights ranging from 1066.5 to 1306.1 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Paleozoic aged intervals but no significant hydrocarbons were found. The well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1972).

421


Well Name: Amoco - IOE A-1 Gannet O-54

Well Summary

Well Date: September 24, 1971 - April 24, 1972 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Newfoundland Whale Fall - Winter - Spring 100.0 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None


3048.0 3041.6 2918.2 1066.5 - 1306.1 Water Based


42.0 61.6 16.8 7.3 4.7 0.0 3.7 29.1


47.3 21.1 50.4 11.9% 7.6%


Mi ni mum 1.0 23.2 6.0 1.0 0.9

Aver a ge 7.2 37.7 16.1 3.3 5.8

M ax i mum 47.0 47.0 33.9 5.5 42.1

422


Gannet O-54 - Time Depth Plot Time (days) 0

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1000 South NL Area Minimum (m) South NL Area Maximum (m)

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Gannet O-54 3000

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Gannet O-54 - Time Distribution



Wait on Weather 8%

423


424


Puffin B-90 Puffin B-90, operated by Amoco Canada, was an exploration well drilled during the fall of 1971 and winter of 1972 in the South Whale Basin of the South Newfoundland area. At a water depth of 106.7 meters, Puffin B-90 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on September 29, 1971 and operations were completed on January 5, 1972 after 100 days. Wait on weather and non-productive time accounted for 15.6 percent and 3.5 percent of total time. There were no significant non-productive delays for this well. Fishing operations were required at total depth when the drill pipe twisted off and 13.5 hours were lost in this time before it was decided to plug the well. As well, there were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4701.5 meters (MD) was reached after 26.9 days in drilling time. The average ROP for the well was 7.0 meters per hour and at the total depth the rate was 1.7 meters per hour. Water based muds with weights ranging from 1030.5 to 1270.2 kg/m3 were used to drill the well. The well penetrated Tertiary and Cretaceous aged intervals but there were no significant hydrocarbon shows found. The well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

425


Well Name: Amoco I.O.E. A-1 Puffin B-90

Well Summary

Well Date: September 29, 1971 - January 5, 1972


Southern Newfoundland South Whale Fall - Winter 106.7 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4701.5 NA 4540.6 1030.5 - 1270.2 Water Based


NA 99.9 26.9 3.5 15.5 0.0 5.7 48.3


45.5 22.0 48.2 3.5% 15.6%


Mi ni mum 1.5 11.1 1.5 0.9

Aver a ge 7.0 37.5 4.1 5.9

M axi mum 48.0 48.0 11.1 27.6

426


Puffin B-90 - Time Depth Plot Time (days) 0

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South NL Area Maximum (m) Puffin B-90

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Puffin B-90 - Time Distribution

Drilling Time 27% Other Rig Operations 48% Non Productive Time 3% Wait on Weather 16% Data Acquisition 6%

427


428


Hermine E-94 Hermine E-94, operated by Elf Oil Exploration and Production Canada Limited, was an exploration well drilled during the fall and winter of 1971 in the South Whale basin of the South Newfoundland area. At a water depth of 82.6 meters, Hermine E-94 was drilled using Sea Drilling Netherlands Company’s Sedneth 1, a first generation, moored semi-submersible rig. The well was spudded on October 22, 1971 and operations were completed on December 31, 1971 after 88 days. Wait on weather and non-productive time accounted for 17.4 percent and 5.5 percent of total time. The most significant non-productive time delay was during initial operations after the hole was spudded, the drill string got stuck at 246.9 meters and after unsuccessful fishing attempts, the hole had to be spud again 61 meters south of the original site. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3267.5 meters (MD) was reached after 20.4 days in drilling time. The average ROP for the well was 6.4 meters per hour and at the total depth the rate was 8.2 meters per hour. Water based muds with weights ranging from 1126.4 to 1366 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Paleozoic aged intervals and encountered salt at total depth. There were no significant hydrocarbons found and the well has been plugged and abandoned (Elf Oil Exploration and Production Canada Limited, 1972).

429


Well Name: Elf Hermine E-94

Well Summary

Well Date: October 22, 1971 - December 31, 1971

Genera l Overview Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Southern Newfoundland South Whale Fall - Winter 82.6 Exploration Sedneth 1 (Sea Drilling Netherlands Company - 1967) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dril l ing Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3267.5 NA 3152.9 1126.4 - 1366 Water Based

Tim e Ana l ysi s (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 87.7 20.4 4.8 15.3 0.0 4.0 43.2

Perf orm a nce M etr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

36.0 27.8 37.7 5.5% 17.4%

Dril l ing M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Paleozoic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 1.6 22.8 8.1 1.6 3.0 1.8


Aver a g e 6.4 22.8 13.2 3.1 5.9 6.5

M a xi mum 23.0 22.8 22.8 4.4 8.2 25.9

430


Hermine E-94 - Time Depth Plot Time (days) 0

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South NL Area Maximum (m) Hermine E-94

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Hermine E-94 - Time Distribution Drilling Time 23% Other Rig Operations 49%


431


432


Petrel A-62 Petrel A-62, operated by Amoco Canada, was an exploration well drilled during the winter of 1972 in the South Whale basin of the South Newfoundland area. At a water depth of 86.0 meters, Petrel A-62 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on January 10, 1972 and operations were completed on March 1, 1972 after 55.5 days. Wait on weather and non-productive time accounted for 42.2 percent and 13.1 percent of total time. A total of 23.5 days were lost due to weather delays but none were reported as ice related. As well, there were 5.4 days spent on repairing the subsea equipment. There were no HSE or lost time incidents during operations. Total depth of 1945.8 meters (MD) was reached after 4.3 days in drilling time. The average ROP for the well was 17.7 meters per hour and at the total depth the rate was 11.1 meters per hour. Water based muds with weights ranging from 1054.5 to 1425.9 kg/m3 were used to drill the well. The well penetrated Tertiary and Cretaceous aged intervals and it encountered salt until total depth of 1945.8 meters (MD). There were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1972).

433


Well Name: Amoco-Imp-A-1 Petrel A-62

Well Summary

Well Date: January 10, 1972 - March 1, 1972 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Newfoundland South Whale Winter 86.0 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


1945.8 NA 1830.0 1054.5 - 1425.9 Water Based


25.0 55.5 4.3 7.3 23.5 0.0 2.1 18.4


32.9 30.4 34.2 13.1% 42.2%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 6.4 37.3 6.4 11.1 0.7

Aver a ge 17.7 47.2 12.5 11.1 2.4

M ax i mum 56.7 56.7 37.3 11.1 6.5

434


Petrel A-62 - Time Depth Plot Time (days) 0

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South NL Area Maximum (m) Petrel A-62

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Petrel A-62 - Time Distribution Drilling Time 8% Other Rig Operations 33%



435


Meters Petrel A-62 - ROP vs. Depth Axis Title (m/hr) Rate of Penetration 0

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Cenozoic

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436


Shearwater J-20 Shearwater J-20, operated by Amoco Imperial, was an exploration well drilled during the spring of 1972 in the South Whale basin of the South Newfoundland area. At a water depth of 98.1 meters, Shearwater J-20 was drilled using Sea Drilling Netherlands Company’s Sedneth 1, a first generation, moored semisubmersible rig. The well was spudded on April 11, 1972 and operations were completed on June 18, 1972 after 79 days. Wait on weather and non-productive time accounted for 10.5 percent and 9.5 percent of total time. There were significant hole issues on this well as it had to be sidetracked twice because of hole problems and unsuccessful fishing attempts. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 2330.8 meters (MD) was reached after 13.2 days in drilling time. The total meters drilled for this well was 3024.1 meters since the well was sidetracked first at 1744.5 meters and then again at 1833.2 meters. The average ROP for the well was 9.6 meters per hour and at the total depth the rate was 4.5 meters per hour. Water based muds with weights ranging from 1066.5 to 1581.7 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals but there were no hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1972).

437


Well Name: Amoco Imp A-1 Shearwater J-20

Well Summary

Well Date: March 31, 1972 - June 18, 1972


Southern Newfoundland South Whale Spring 98.1 Exploration


Sedneth 1 (Sea Drilling Netherlands Company - 1967)


1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


2330.8 NA 3024.1 1066.5 - 1581.7 Water Based


NA 79.1 13.2 7.5 8.3 0.0 1.6 48.5


38.2 26.2 39.0 9.5% 10.5%


Mi ni mum 1.7 19.6 3.7 0.7

Aver a ge 9.6 30.5 9.2 4.4

M ax i mum 61.3 53.4 21.2 24.6

438


*No Time Depth Plot

Shearwater J-20 - Time Distribution Drilling Time 17% Non Productive Time 9%



439


Bittern M-62 Bittern M-62, operated by Amoco Canada, was an exploration well drilled during the spring and summer of 1972 in the Horseshoe basin of the South Eastern Newfoundland area. At a water depth of 68.9 meters, Bittern M-62 was drilled using Sedco International’s Sedco I, a first generation, semisubmersible rig. The well was spudded on April 27, 1972 and operations were completed on July 29, 1972 after 95 days. Non-productive time accounted for 3.8 percent of total time. There were no reports of wait on weather, ice delays or HSE or lost time incidents during operations. Total depth of 4778.7 meters (MD) was reached after 48.5 days in drilling time. The average rate of penetration for the well was 4.0 metres per hour and at the total depth the rate was 1.9 metres per hour. Water based muds with weights ranging from 1018.5 to 1198.3 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals during drilling. Hydrocarbon shows were found in this well but none were considered significant. The well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973). Assumptions: The end of well report for Bittern M-62 has been manually updated to change the total depth to 4780.2 meters but the bit record reflects a total depth of 4778.7 meters so the bit record depth will be used.

440


Well Name: Amoco - Imp A-1 Bittern M-62

Well Summary

Well Date: April 27, 1972 - July 29, 1972 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

South Eastern Newfoundland Horseshoe Spring - Summer 68.9 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4778.7 NA 4679.9 1018.5 - 1198.3 Water Based


NA 95.0 48.5 3.6 0.0 0.0 6.8 36.1


49.2 20.3 53.0 3.8% 0.0%


Mi ni mum 0.6 10.8 26.9 0.6 1.5

Aver a ge 4.0 17.0 27.5 3.5 10.4

M ax i mum 28.7 31.7 31.7 26.9 68.4

441


Bittern M-62 - Time Depth Plot Time (days) 0

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Bittern M-62 - Time Distribution


Drilling Time 51%

Data Acquisition 7% Wait on Weather Non Productive 0% Time 4%

442


443


Kittiwake P-11 Kittiwake P-11, operated by Amoco Canada, was an exploration well drilled during the summer of 1972 in the South Whale basin of the South Newfoundland area. At a water depth of 95.7 meters, Kittiwake P11 was drilled using Sea Drilling Netherlands Sedneth 1, a first generation, moored semi-submersible rig. The well was spudded on June 20, 1972 and operations were completed on August 3, 1972 after 45.2 days. Non-productive time accounted for 9 percent of total time. The most significant non-productive time delays were due to fishing operations and rig equipment repairs. There were no reports of wait on weather, ice delays or HSE or lost time incidents during operations. Total depth of 3550 meters (MD) was reached after 45.2 days in drilling time. The average ROP for the well was 8.3 meters per hour and at the total depth the rate was 3.6 meters per hour. Water based muds with weights ranging from 1078.4 to 1402 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Jurassic aged intervals as well as salt to total depth of 3550 meters (MD). There were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

444


Well Name: Amoco Imp A-1 Kittiwake P-11

Well Summary


Ge nera l Overview Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Southern Newfoundland South Whale Summer 95.7 Exploration Sedneth 1 (Sea Drilling Netherlands Company - 1967) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dr il li ng Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3550.0 NA 3429.0 1078.4 - 1402 Water Based

Tim e Ana l ysi s (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 45.2 17.3 4.1 0.0 0.0 4.6 19.2

Perfor ma nc e M etri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

75.8 13.2 84.5 9.0% 0.0%

Dr il li ng M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi nim um 1.1 16.1 1.1 3.1 3.6 0.6


Avera g e 8.3 23.0 4.5 5.1 11.6 5.0

Ma xim um 71.3 71.3 16.1 9.8 16.7 37.2

445


Kittiwake P-11 - Time Depth Plot Time (days) 0

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South NL Area Maximum (m) Kittiwake P-11

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Kittiwake P-11 - Time Distribution

Drilling Time 38%




446


447


Heron H-73 Heron H-73, operated by Amoco Canada Petroleum Company Limited, was an exploration well drilled during the summer and fall of 1972 in the South Whale basin of the South Newfoundland area. At a water depth of 105.5 meters, Heron H-73 was drilled using Sea Drilling Netherlands Company’s Sedneth 1, a first generation, moored semi-submersible rig. The well was spudded on August 5, 1972 and operations were completed on December 5, 1972 after 124.5 days. Wait on weather and non-productive time accounted for 17.3 percent and 8.0 percent of total time. The most significant non-productive time delays were due to fishing operations. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3657.6 meters (MD) was reached after 21.3 days in drilling time. The average ROP for the well was 6.9 meters per hour and at the total depth the rate was 7.2 meters per hour. Water based muds with weights ranging from 1042.5 to 1234.2 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Jurassic aged intervals before encountering salt until total depth. Upon evaluation using a drill stem test, hydrocarbons were found. The well has been classified as an oil well and was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

448


Well Name: Amoco Imp A-1 Heron H-73

Well Summary

Well Date: August 5, 1972 - December 5, 1972



Southern Newfoundland South Whale Summer - Fall 105.5 Exploration Sedneth 1 (Sea Drilling Netherlands Company - 1967) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3657.6 NA 3526.2 1042.5 - 1234.2 Water Based


NA 124.5 21.3 10.0 21.5 0.0 25.0 46.7


28.3 35.3 35.4 8.0% 17.3%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.4 9.7 6.2 0.4 7.2 0.7


Aver a ge 6.9 22.1 9.5 3.1 7.2 6.0

M ax i mum 64.0 64.0 11.9 6.2 7.2 98.7

449


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Heron H-73 - Time Distribution Drilling Time 17% Other Rig Operations 38%



450


451


Jaeger A-49 Jaeger A-49, operated by Amoco Canada Petroleum Company Limited, was an exploration well drilled during the summer of 1972 in the South Newfoundland area. At a water depth of 57.9 meters, Jaeger A49 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on August 16, 1972 and operations were completed on August 27, 1972 after 12.7 days. Wait on weather and non-productive time accounted for 3.9 percent and 8.7 percent of total time. The non-productive delays were because of drilling equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 938.5 meters (MD) was reached after 1.0 day in drilling time. The average ROP for the well was 35.4 meters per hour and at the total depth the rate was 21.4 meters per hour. Water based muds with weights ranging from 1114.4 to 1234.2 kg/m3 were used to drill the well. Tertiary, Cretaceous and Paleozoic aged intervals were encountered in the well. There were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

452


Well Name: Amoco - Imp A-1 Jaeger A-49

Well Summary

Well Date: August 16, 1972 - August 27, 1972


South Eastern Newfoundland Interbasinal Shelf Region Summer 57.9 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


938.5 NA 850.7 1114.4 - 1234.2 Water Based

Ti me Anal ysi s (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 12.7 1.0 1.1 0.5 0.0 0.5 9.5

Per formance M etri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

67.0 14.9 70.0 8.7% 3.9%

Dri l li ng M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

M i ni mum 21.4 21.4 21.4 0.4

Aver age 35.4 46.9 21.4 1.2

M a xi mum 105.2 105.2 21.4 1.9

453


*No Time Depth Plot

Jaeger A-49 - Time Distribution Drilling Time 8%



454


Gull F-72 Gull F-72, operated by Amoco Canada Petroleum Company Limited, was an exploration well drilled during the fall of 1972 and winter of 1973 in the South Whale basin of the South Newfoundland area. At a water depth of 96.6 meters, Gull F-72 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on December 1, 1972 and operations were completed on January 12, 1973 after 51.8 days. Wait on weather and non-productive time accounted for 22.3 percent and 5.9 percent of total time. The most significant non-productive time delays were due to subsea and drilling equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 2500.9 meters (MD) was reached after 7.0 days in drilling time. The average ROP for the well was 14.1 meters per hour and at the total depth the rate was 13 meters per hour. Water based muds with weights ranging from 1042.5 to 1342.1 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals as well as salt until total depth. There were no significant hydrocarbons found for this well and it was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

455


Well Name: Amoco-Imp A-1 Gull F-72

Well Summary

Well Date: December 1, 1972 - January 12, 1973


Southern Newfoundland South Whale Fall - Winter 96.6 Exploration Sedco I (Sedco International -1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


2500.9 2497.8 2377.4 1042.5 - 1342.1 Water Based


NA 51.8 7.0 3.1 11.6 0.0 2.6 27.6


45.9 21.8 48.3 5.9% 22.3%


Mi ni mum 1.1 14.4 1.1 8.2 0.8

Aver a ge 14.1 28.0 8.7 12.4 3.0

M ax i mum 52.6 52.6 14.4 13.0 38.0

456


*No Time Depth Plot

Gull F-72 - Time Distribution Drilling Time 14% Non Productive Time 6%


Wait on Weather 22%

Data Acquisition 5%

457


Merganser I-60 Merganser I-60, operated by Amoco Canada Petroleum Company Limited, was an exploration well drilled during the fall of 1972 and winter of 1973 in the Whale basin of the South Newfoundland area. At a water depth of 78.6 meters, Merganser I-60 was drilled using Sea Drilling Netherlands Company’s Sedneth 1, a first generation, moored semi-submersible rig. The well was spudded on December 8, 1972 and operations were completed on January 17, 1973 after 43.4 days. Wait on weather and non-productive time accounted for 17.3 percent and 17.5 percent of total time. The most significant non-productive time delays were due to subsea equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 1903.5 meters (MD) was reached after 4.7 days in drilling time. The average ROP for the well was 16.0 meters per hour and at the total depth the rate was 16.8 meters per hour. Water based muds with weights ranging from 1042.5 to 1330.1 kg/m3 were used to drill the well. The well drilled through Tertiary, Cretaceous and Jurassic aged intervals as well as salt. There were no significant hydrocarbons found and the well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

458


Well Name: Amoco-Imp A-1 Merganser I-60

Well Summary

Well Date: December 8, 1972 - January 17, 1973 Genera l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Southern Newfoundland Whale Fall - Winter 78.6 Exploration Sedneth 1 (Sea Drilling Netherlands Company - 1967) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dr il l i ng D ata Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

1903.5 NA 1798.9 1042.5 - 1330.1 Water Based

Ti me Ana lysi s (Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 43.4 4.7 7.6 7.5 0.0 2.2 21.4

Perfor ma nce Metr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

41.5 24.1 43.7 17.5% 17.3%

Dr il l i ng Metr i cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi nimum 3.4 37.6 8.8 3.4 3.4 1.1


Aver ag e 16.0 37.6 15.7 6.1 12.6 2.6

Maxi mum 37.6 37.6 37.6 8.8 16.8 12.1

459


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Merganser I-60 - Time Distribution Drilling Time 11% Non Productive Time 18%



460


461


Tern A-68 Tern A-63, operated by Amoco Canada, was an exploration well drilled during the winter and spring of 1973 in the South Whale basin of the South Newfoundland area. At a water depth of 114.6 meters, Tern A-63 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on January 17, 1973 and operations were completed on April 16, 1973 after 94.8 days. Wait on weather and non-productive time accounted for 15.3 percent and 12.9 percent of total time. The most significant non-productive time delays were due to subsea equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4188.9 meters (MD) was reached after 23.3 days in drilling time. The average ROP for the well was 7.2 meters per hour and at the total depth the rate was 4.6 meters per hour. Water based muds with weights ranging from 1030.5 to 1306.1 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals as well as salt. There were no significant hydrocarbons found and the well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

462


Well Name: Amoco-Imp-Skelly A-1 Tern A-68

Well Summary

Well Date: January 17, 1973 - April 16, 1973 General Over view Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Newfoundland South Whale Winter - Spring 114.6 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4188.9 4169.4 4044.4 1030.5 - 1306.1 Water Based


NA 94.8 23.3 12.2 14.5 0.0 3.6 41.2


42.7 23.4 44.3 12.9% 15.3%

Dr il li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

M ini mum 0.8 2.8 3.4 0.8 4.6 1.0

Averag e 7.2 15.1 6.4 2.6 4.6 5.8

Max im um 40.8 36.2 9.9 6.0 4.6 49.4

463


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Data Acquisition 4%

Wait on Weather 15%

464


465


Mallard M-45 Mallard M-45, operated by Amoco Canada, was an exploration well drilled during the winter and spring of 1973 in the South Whale basin of the South Newfoundland area. At a water depth of 84.7 meters, Mallard M-45 was drilled using Sea Drilling Netherlands Company’s Sedneth 1, a first generation, moored semi-submersible rig. The well was spudded on February 26, 1973 and operations were completed on May 2, 1973 after 65.4 days. Wait on weather and non-productive time accounted for 5.0 percent and 11.0 percent of total time. The most significant non-productive time delays were due to fishing and equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3522 meters (MD) was reached after 20.8 days in drilling time. The average ROP for the well was 6.8 meters per hour and at the total depth the rate was 2.1 meters per hour. Water based muds with weights ranging from 1066.5 to 1258.2 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals. There were no indications of hydrocarbons and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

466


Well Name: Amoco-Imp-Skelly A-1 Mallard M-45

Well Summary

Well Date: February 26, 1973 - May 2, 1973



Southern Newfoundland South Whale Winter - Spring 84.7 Exploration Sedneth 1 (Sea Drilling Netherlands Company - 1967) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3522.0 NA 3410.4 1066.5 - 1258.2 Water Based


NA 65.4 20.8 7.2 3.3 0.0 3.9 30.3


52.2 19.2 55.5 11.0% 5.0%


Mi ni mum 0.4 28.2 3.0 0.4 0.6


Aver a ge 6.8 39.7 6.7 1.7 6.1

M ax i mum 65.7 65.7 28.2 3.0 102.5

467


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Drilling Time 32%


Data Acquisition 6%


468


469


Razorbill F-54 Razorbill F-54, operated by Amoco Canada, was an exploration well drilled during the spring and summer of 1973 in the Whale basin of the South Newfoundland area. At a water depth of 69.2 meters, Razorbill F-54 was first drilled using Sedco International’s Sedco I and was then drilled using Sea Drilling Netherlands Company’s Sedneth 1. Both rigs were first generation, moored semi-submersible units. The well was spudded on April 29, 1973 and operations were completed on July 4, 1973 after 77.8 days. Wait on weather and non-productive time accounted for 1.0 percent and 12.5 percent of total time. The most significant non-productive time delays were due to ice. Specifically, the Sedco I was released due to ice conditions on May 1, 1973 and the Sedneth 1 was brought on to site on May 2, 1973. There were no reports of HSE or lost time incidents during operations. Total depth of 3135.2 meters (MD) was reached after 25 days of drilling time. The average ROP for the well was 5.0 meters per hour and at the total depth the rate was 1.1 meters per hour. Water based muds with weights ranging from 1078.4 to 1402 kg/m3 were used to drill the well. Tertiary, Cretaceous, Jurassic and Precambrian aged intervals were encountered. The well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1973).

470


Well Name: Amoco-Imp-Skelly A-1 Razorbill F-54

Well Summary




Southern Newfoundland Whale Spring - Summer 69.2 Exploration Sedco I (Sedco International - 1980) Sedneth 1 (Sea Drilling Netherlands Ltd - 1967) Both - 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3135.2 3126.6 3031.8 1078.4 - 1402 Water Based


NA 77.8 25.0 0.9 0.8 8.8 5.9 36.4

Per for ma nce M etr i cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

39.0 25.7 42.1 12.5% 1.0%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Precambrian (m/hr) Days/1000 meters while drilling (days)

M i ni mum 0.5 44.5 11.1 1.1 0.5 0.9

Rig Name (Owner - Year Built) Rig Name (Owner - Year Built)

Aver a ge 5.0 44.5 20.0 3.1 0.8 8.3

M ax i mum 44.5 44.5 44.5 11.1 1.1 78.9

471


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Drilling Time 32%

Non Productive Time Data AcquisitionWait on Weather 12% 1% 8%

472


473


Sandpiper J-77 Sandpiper J-77, operated by Amoco Canada, was an exploration well drilled during the spring of 1973 in the Whale basin of the South Newfoundland area. At a water depth of 90.5 meters, Sandpiper J-77 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. Well operations began on May 1, 1973 but the well was not spudded until May 22, 1973 because of wait on ice delays and the rig’s annual inspection. Operations were abandoned on June 15, 1973 after 44.6 days. Wait on weather and non-productive time accounted for 4.3 percent and 48.3 percent of total time. Ice was the cause of 13.9 days of non-productive time. There was also 3.4 days spent on repairing the subsea equipment. There were no reports of HSE or lost time incidents during operations. Total depth of 803.1 meters (MD) was reached after 1 day in drilling time. The well was abandoned at this depth after the casing collapsed while pressure tests were being conducted on the 13 3/8” seal assembly. The average ROP for the well was 27.3 meters per hour and at the total depth the rate was 27.6 meters per hour. Water based muds with weights ranging from 1246.2 to 1258.2 kg/m3 were used to drill the well. Samples were taken starting at 289.6 meters and Cretaceous aged intervals were encountered. The well was abandoned following the casing collapse (Amoco Canada Petroleum Company Limited, 1974).

474


Well Name: Amoco-Imp-Skelly A-1 Sandpiper J-77

Well Summary

Well Date: May 1, 1973 - June 15, 1973


South Eastern Newfoundland Whale Spring 90.5 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


803.1 NA 682.8 1246.2 - 1258.2 Water Based


NA 44.6 1.0 7.7 1.9 13.9 0.4 19.7


15.3 65.3 15.4 48.3% 4.3%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 24.0 27.6 1.3

Aver a ge 27.3 27.6 1.5

M axi mum 33.1 27.6 1.7

475


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Sandpiper J-77 - Time Distribution Drilling Time 3%

Other Rig Operations 44% Non Productive Time 48%


476


477


Sandpiper 2J-77 Sandpiper 2J-77, operated by Amoco Canada, was an exploration well drilled during the summer and fall of 1973 in the Whale basin of the South Newfoundland area. At a water depth of 90.2 meters, Sandpiper 2J-77 was first drilled using Sedco International’s Sedco I, and was then drilled using Sea Drilling Netherlands Company’s Sedneth 1. Both rigs were first generation, moored semi-submersible units. The well was spudded on June 15, 1973 with Sedco I and operations were suspended on June 19th, 1973 after 4 days. The well was re-entered with the Sedneth 1 on August 21, 1973 and operations completed on October 31, 1973. The total time of well was 79.5 days. Wait on weather and non-productive time accounted for 4.4 percent and 6.8 percent of total time. The most significant non-productive time delays were due to subsea equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3531.4 meters (MD) was reached after 32.1 days of drilling time. The average rate of penetration for the well was 4.4 meters per hour and at the total depth the rate was 1.5 meters per hour. Water based muds with weights ranging from 1126.4 to 1461.9 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous, Jurassic and Paleozoic aged intervals but there were no significant hydrocarbons found. The well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

478


Well Name: Amoco-Imp-Skelly Sandpiper 2J-77

Well Summary

Well Date: June 15, 1973 - October 30, 1973

Gene ra l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built)


South Eastern Newfoundland Whale Summer - Fall 90.2 Exploration Sedco I (Sedco International - 1970) Sedneth 1 (Sea Drilling Netherlands Ltd - 1967) Both - 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dri ll i ng Da ta Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

3531.4 NA 3405.2 1126.4 - 1461.9 Water Based

Ti me Ana l ysi s ( Da ys) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 79.5 32.1 5.4 3.5 0.0 3.8 34.7

Per form a nc e Me tr ic s Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

42.8 23.3 45.0 6.8% 4.4%

Dri ll i ng M etr ic s ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Paleozoic (m/hr) Days/1000 meters while drilling (days)

M ini m um 0.8 41.1 5.5 0.9 0.8 0.6


Avera g e 4.4 41.1 24.4 6.4 1.1 9.4

M a xi m um 73.9 41.1 41.1 9.5 1.5 51.3

479


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Drilling Time 40%

Data Acquisition 5%

Wait on Weather 4%


480


481


Heron J-72 Heron J-72, operated by Amoco Canada, was an exploration well drilled during the summer of 1973 in the South Whale basin of the South Newfoundland area. At a water depth of 109.7 meters, Heron J-72 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on June 23, 1973 and operations were completed on July 8, 1973 after 18.6 days. Wait on weather and non-productive time accounted for 2.2 percent and 8.8 percent of total time. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 1382.3 meters (MD) was reached after 1.9 days of drilling time. The average ROP for the well was 27.2 meters per hour and at the total depth the rate was 14.6 meters per hour. Water based muds with weights ranging from 1174.3 to 1234.2 kg/m3 were used to drill the well. The well encountered Tertiary and Jurassic aged intervals as well as salt. The well has been plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

482


Well Name: Amoco-Imp-Skelly A-2 Heron J-72

Well Summary

Well Date: June 23, 1973 - July 8, 1973


Southern Newfoundland South Whale Summer 109.7 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


1382.3 NA 1242.7 1174.3 - 1234.2 Water Based


NA 18.6 1.9 1.6 0.4 0.0 2.2 12.4


66.9 15.0 75.7 8.8% 2.2%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Jurassic(m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 1.9 24.8 1.9 7.9 0.7

Aver a ge 27.2 40.3 8.8 12.9 1.5

M axi mum 57.5 53.6 24.8 14.6 22.0

483


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Heron J-72 - Time Distribution Drilling Time Non Productive 10% Time 9% Wait on Weather 2%

Data Acquisition 12% Other Rig Operations 67%

484


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485


Osprey G-84 Osprey G-84, operated by Amoco Canada, was an exploration well drilled during the summer of 1973 in the Carson basin of the South Eastern Newfoundland area. At a water depth of 61.3 meters, Osprey G84 was drilled using Sea Drilling Netherlands Company’s Sedneth 1, a first generation, moored semisubmersible rig. The well was spudded on July 9, 1973 and operations were completed on August 16, 1973 after 38.8 days. Wait on weather and non-productive time accounted for 0.3 percent and 6.3 percent of total time. Non-productive time was mainly due to rig equipment and subsea equipment repairs and there was a half day delay due to wait on ice. There were no reports of HSE or lost time incidents during operations. Total depth of 3473.8 meters (MD) was reached after 12.7 days in drilling time. The average rate of penetration for the well was 11.1 meters per hour and at the total depth the rate was 0.6 meters per hour. Water based muds with weights ranging from 1078.4 to 1425.9 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals as well as salt but there were no significant hydrocarbons found. The well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

486


Well Name: Amoco-Imp-Skelly Osprey G-84

Well Summary

Well Date: July 9, 1973 - August 16, 1973 General Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification


South Eastern Newfoundland Carson Summer 61.3 Exploration Sedneth 1 (Sea Drilling Netherlands Ltd - 1967) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3473.8 NA 3386.6 1078.4 - 1425.9 Water Based

Ti me Anal ysi s (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 38.8 12.7 1.9 0.1 0.5 3.2 20.3

Per formance Metr ics Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

87.3 11.5 95.0 6.3% 0.3%

Dri ll i ng M etr ics ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

M ini mum 0.6 13.7 13.7 7.6 6.5 0.9


Avera ge 11.1 43.0 13.7 8.6 14.6 3.8

M axi mum 45.5 45.5 13.7 13.7 19.9 68.4

487


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Drilling Time 33%



488


489


Spoonbill C-30 Spoonbill C-30, operated by Amoco Canada, was an exploration well drilled during the fall of 1973 in the Horseshoe basin of the South Newfoundland area. At a water depth of 65.2 meters, Spoonbill C-30 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on September 12, 1973 and operations were completed on October 14, 1973 after 34.1 days. Wait on weather and non-productive time was minimal and accounted for 0.2 percent and 1.7 percent of total time. Non-productive time delays were due to equipment repairs and miscellaneous items. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 2757.2 meters (MD) was reached after 13.2 days in drilling time. The average ROP for the well was 8.4 meters per hour and at the total depth the rate was 3.7 meters per hour. Water based muds with weights ranging from 1114.4 to 1354 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals as well as salt but there were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

490


Well Name: Amoco-Imp-Skelly Spoonbill C-30

Well Summary


General Overvi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

South Eastern Newfoundland Horseshoe Fall 65.2 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported

Dril li ng Data Total Depth MD (m) Total Depth TVD (m) Total Meters Drilled (m) Mud Weight (kg/m3) Drilling Fluid Type

2757.2 NA 2662.1 1114.4 - 1354.0 Water Based

Tim e Analysis (Days) Planned Time of Well Actual Time of Well Drilling Time Non Productive Time Wait on Weather Wait on Ice Data Acquisition Other Rig Operations

NA 34.1 13.2 0.6 0.1 0.0 3.2 17.1

Perform ance Metri cs Meters/day (m) Days/1000 meters (days) Meters/day (excluding data acquisition) (m) Non-Productive Time Wait on Weather

78.1 12.8 86.2 1.7% 0.2%

Dril li ng Metri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) ROP - Jurassic (m/hr) ROP - Salt (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 1.2 36.9 17.4 9.0 2.7 2.1

Averag e 8.4 36.9 31.6 11.9 7.6 4.9

M axi m um 36.9 36.9 36.9 17.4 13.4 36.1

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Non Productive Time Wait on Weather Data Acquisition 0% 2% 9%

492


493


Pelican J-49 Pelican J-49, operated by Amoco Canada, was an exploration well drilled during the fall of 1973 in the Whale basin of the South Newfoundland area. At a water depth of 91.4 meters, Pelican J-49 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on October 19, 1973 and operations were completed on November 8, 1973 after 24.6 days. Wait on weather and non-productive time accounted for 26.5 percent and 6 percent of total time. The most significant non-productive time delays were due to issues with the subsea equipment. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 1298.5 meters (MD) was reached after 2.1 days in drilling time. The average rate of penetration for the well was 22.9 meters per hour and at the total depth the rate was 17.0 meters per hour. Water based muds with weights ranging from 1126.4 to 1186.3 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals and salt. No significant hydrocarbons were found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

494


Well Name: Amoco-Imp-Skelly Pelican J-49

Well Summary

Well Date: October 19, 1973 - November 8, 1973


Southern Newfoundland Whale Fall 91.4 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


1298.5 NA 1177.1 1126.4 - 1186.3 Water Based


NA 24.6 2.1 1.5 6.5 0.0 1.9 12.6


47.92 20.87 51.93 6.0% 26.5%


Mi ni mum 17.0 28.3 18.0 17.0 1.2

Aver a ge 22.9 28.3 26.0 17.3 1.8

M ax i mum 35.6 28.3 28.3 18.8 2.5

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Pelican J-49 - Time Distribution Drilling Time Non Productive 9% Time 6%


Wait on Weather 26%

Data Acquisition 8%

496


497


Brant P-87 Brant P-87, operated by Amoco Canada, was an exploration well drilled during the fall of 1973 in the South Whale basin of the South Newfoundland area. At a water depth of 98.8 meters, Brant P-87 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on November 14, 1973 and operations were completed on December 22, 1973 after 43.4 days. Wait on weather and non-productive time accounted for 6.9 percent and 5.9 percent of total time. The most significant non-productive time delays were due to subsea equipment repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3587.8 meters (MD) was reached after 13.2 days in drilling time. The average ROP for the well was 10.9 meters per hour and at the total depth the rate was 1.5 meters per hour. Water based muds with weights ranging from 1090.4 to 1246.2 kg/m3 were used to drill the well. The well penetrated Tertiary and Cretaceous aged intervals but there were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

498


Well Name: Amoco-Imp-Skelly Brant P-87

Well Summary

Well Date: November 14, 1973 - December 22, 1973


Southern Newfoundland South Whale Fall 98.8 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3587.8 NA 3459.2 1090.4 - 1246.2 Water Based


NA 43.4 13.2 2.6 3.0 0.0 4.9 19.7


79.8 12.5 90.0 5.9% 6.9%


Mi ni mum 1.5 15.1 4.1 0.8

Aver a ge 10.9 28.3 8.9 3.8

M axi mum 51.7 51.7 16.2 27.5

499


Brant P-87 - Time Depth Plot Time (days) 0

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Brant P-87 - Time Distribution

Drilling Time 31%




500


501


Bonnition H-32 Bonnition H-32, operated by Mobil Oil Canada Limited, was an exploration well drilled during the fall of 1973 and winter of 1974 in the Carson basin of the South Newfoundland area. At a water depth of 101.8 meters, Bonnition H-32 was drilled using Sedco International’s Sedco J, a first generation, moored semisubmersible rig. The well was spudded on December 2, 1973 and operations were completed on January 2, 1974 after 31.1 days. Wait on weather and non-productive time accounted for 4.5 percent and 0.3 percent of total time. There were no significant non-productive time delays during operations. As well, there were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3048 meters (MD) was reached after 12.6 days in drilling time. The average ROP for the well was 9.7 meters per hour and at the total depth the rate was 3.9 meters per hour. Water based muds with weights ranging from 1090.4 to 1150.3 kg/m3 were used to drill the well. The well encountered Quaternary, Tertiary, Cretaceous and Jurassic aged intervals. There were no significant hydrocarbons found and the well was plugged and abandoned (Mobil Oil Canada Limited, 1974).

502


Well Name: Mobil Gulf Bonnition H-32

Well Summary



South Eastern Newfoundland Carson Fall - Winter 101.8 Exploration Sedco J (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3048.0 NA 2916.3 1090.4 - 1150.3 Water Based


NA 31.1 12.6 0.1 1.6 0.0 2.9 13.9


93.8 10.7 103.3 0.3% 5.3%


Mi ni mum 3.4 4.3 3.9 0.8

Aver a ge 9.7 11.2 4.0 4.3

M axi mum 51.1 29.1 4.4 10.8

503


Bonnition H-32 - Time Depth Plot Time (days) 0

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Bonnition H-32 3000

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Bonnition H-32 - Time Distribution

Drilling Time 41%


Data Acquisition 9%


504


505


Emerillon C-56 Emerillon C-56, operated by Elf Canada, was an exploration well drilled during the fall of 1973 and winter of 1974 in the South Whale basin of the South Newfoundland area. At a water depth of 119.8 meters, Emerillon C-56 was drilled using Sedco International’s Sedco H, a first generation, moored semisubmersible rig. The well was spudded on December 7, 1973 and operations were completed on January 26, 1974 after 51.3 days. Wait on weather and non-productive time accounted for 8.6 percent and 1.3 percent of total time. Non-productive time delays were due to fishing and rig maintenance. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3276.6 meters (MD) was reached after 20.1 days in drilling time. The average ROP for the well was 6.5 meters per hour and at the total depth the rate was 3.2 meters per hour. Water based muds with weights ranging from 1042.5 to 1162.3 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals but there were no significant hydrocarbons found and the well was plugged and abandoned (Elf Oil Exploration and Production Canada Limited, 1974).

506


Well Name: Elf et al Emerillon B-56

Well Summary



Southern Newfoundland South Whale Fall - Winter 119.8 Exploration Sedco H (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3276.6 NA 3126.9 1042.5 - 1162.3 Water Based


NA 51.3 20.1 0.6 4.4 0.0 2.7 23.6


60.9 16.4 64.3 1.3% 8.6%


Mi ni mum 1.8 16.6 4.8 1.8 1.1

Aver a ge 6.5 29.2 9.8 3.4 6.4

M axi mum 37.4 37.4 32.6 4.8 23.3

507


Emerillon C-56 - Time Depth Plot Time (days) 0

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Emerillon C-56 3000

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Emerillon C-56 - Time Distribution

Drilling Time 39%


Data Acquisition 5%


508


509


Coot K-56 Coot-K-56, operated by Amoco Canada, was an exploration well drilled during the winter of 1973 and 1974 in the Whale basin of the South Newfoundland area. At a water depth of 79.9 meters, Coot K-56 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on December 24, 1973 and operations were suspended on March 21, 1974 for the ice season. The well was reentered on July 9th, 1974 and operations were completed on July 12, 1974 after 95.6 days. Wait on weather and non-productive time accounted for 8.3 percent and 15.4 percent of total time. The non-productive time was mostly due to mechanical failures with the subsea and drilling equipment and fishing operations. There were zero reports of ice delays but the well was temporarily abandoned on March 21, 1974 to allow for the ice season to pass. During this time the rig was moved to drill the Twillick and Carey wells. There were also no reports of HSE or lost time incidents during operations. Total depth of 3535.7 meters (MD) was reached after 26.4 days in drilling time. The average ROP for the well was 5.4 meters per hour and at the total depth the rate was 3.3 meters per hour. Water based muds with weights ranging from 1114.4 to 1378.0 kg/m3 were used to drill the well. The well encountered Cretaceous and Jurassic aged intervals. There were oil stained intervals present in the well and it was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

510


Well Name: Amoco-Imp-Skelly Coot K-56

Well Summary

Well Date: December 24, 1973 - July 12, 1974


Southern Newfoundland Whale Winter 79.9 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3535.7 NA 3423.8 1114.4 - 1378.0 Water Based


NA 95.6 26.4 14.7 7.9 0.0 6.3 40.2


35.8 27.9 38.4 15.4% 8.3%


Mi ni mum 0.8 8.4 0.8 0.8

Aver a ge 5.4 21.5 4.6 7.7

M axi mum 52.2 23.6 8.6 55.5

511


Coot K-56 - Time Depth Plot Time (days) 0

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Coot K-56 3000

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Coot K-56 - Time Distribution

Drilling Time 28%



Wait on Weather 8%

512


513


Twillick G-49 Twillick G-49, operated by Amoco Canada, was an exploration well drilled during the spring of 1974 in the shelf region between basins of the South Newfoundland area. At a water depth of 74.4 meters, Twillick G-49 was drilled using Sedco International’s Sedco I, a first generation, moored semisubmersible rig. The well was spudded on March 31, 1974 and operations were completed on April 14, 1974 after 24.4 days. Wait on weather and non-productive time accounted for 23.2 percent and 3.2 percent of total time. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 1301.5 meters (MD) was reached after 1.9 days in drilling time. The average ROP for the well was 26.2 meters per hour and at the total depth the rate was 5.4 meters per hour. Water based mud with a weight of 1114.4 kg/m3 was used to drill the well. The well encountered Tertiary and Cretaceous aged intervals but there were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

514


Well Name: Amoco-Imp-Skelly Twillick G-49

Well Summary

Well Date: March 31, 1974 - April 14, 1974


South Eastern Newfoundland Interbasinal Shelf Region Spring 74.4 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


1301.5 NA 1197.3 1114.4 Water Based


NA 24.4 1.9 0.8 5.7 0.0 2.0 14.0


49.1 20.4 53.6 3.2% 23.2%

Dril l ing M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 5.4 37.9 5.4 0.9

Aver age 26.2 37.9 17.9 5.4

M axi mum 44.7 37.9 37.9 7.7

515


Twillick G-49 - Time Depth Plot Time (days) 0

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80

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Twillick G-49 3000

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Twillick G-49 - Time Distribution Drilling Time 8%


Other Rig Operations 58% Data Acquisition 8%

516


517


Carey J-34 Carey J-34, operated by Amoco Canada, was an exploration well drilled during the spring and summer of 1974 in the Whale basin of the South Newfoundland area. At a water depth of 100.6 meters, Carey J-34 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on April 17, 1974 and operations were completed on July 6, 1974 after 82.8 days. Wait on weather and non-productive time accounted for 0.5 percent and 11.4 percent of total time. The most significant non-productive time delays were due to drilling equipment repairs which attributed to 9.4 days of delays. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3689.3 meters (MD) was reached after 34.3 days in drilling time. The average ROP for the well was 4.3 meters per hour and at the total depth the rate was 1.9 meters per hour. Water based muds with weights ranging from 1114.4 to 1186.2 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Jurassic aged intervals. There were no significant hydrocarbons found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1974).

518


Well Name: Amoco-Imp-Skelly Carey J-34

Well Summary



Southern Newfoundland Whale Spring - Summer 100.6 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3689.3 NA 3558.8 1114.4 - 1186.2 Water Based


NA 82.8 34.3 9.4 0.4 0.0 6.7 31.8


43.0 23.3 46.8 11.4% 0.5%


Mi ni mum 1.8 31.8 10.6 1.8 1.1

Aver a ge 4.3 31.8 23.5 3.1 9.6

M axi mum 36.6 31.8 31.8 10.6 22.7

519


Carey J-34 - Time Depth Plot Time (days) 0

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Carey J-34 3000

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Carey J-34 - Time Distribution


Drilling Time 42%



520


521


Skua E-41 Skua E-41, operated by Amoco Canada, was an exploration well drilled during the summer and fall of 1974 in the Carson basin of the South Newfoundland area. At a water depth of 82.9 meters, Skua E-41 was drilled using Sedco International’s Sedco I, a first generation, moored semi-submersible rig. The well was spudded on August 31, 1974 and operations were completed on October 21, 1974 after 53.3 days. Non-productive time accounted for 4.3 percent of total time. The most significant nonproductive time delays were due to fishing operations. There were no reports of wait on weather, ice delays or HSE or lost time incidents during operations. Total depth of 3238.8 meters (MD) was reached after 25.4 days in drilling time. The average ROP for the well was 5.1 meters per hour and at the total depth the rate was 2.5 meters per hour. Water based muds with weights ranging from 1078.4 to 1162.3 kg/m3 were used to drill the well. The well penetrated Tertiary, Cretaceous and Jurassic aged intervals. No significant hydrocarbons were found and the well was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1975).

522


Well Name: Amoco-Imp-Skelly Skua E-41

Well Summary

Well Date: August 31, 1974 - October 21, 1974 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

South Eastern Newfoundland Carson Summer - Fall 82.9 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3238.8 NA 3126.0 1078.4 - 1162.3 Water Based


NA 53.3 25.4 2.3 0.0 0.0 3.4 22.2


58.7 17.0 62.6 4.3% 0.0%


Mi ni mum 1.2 20.5 7.0 1.2 1.0

Aver a ge 5.1 28.3 10.0 3.4 8.1

M axi mum 43.2 43.2 20.5 7.0 34.2

523


Skua E-41 - Time Depth Plot Time (days) 0

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Skua E-41 - Time Distribution


Drilling Time 48%

Data Acquisition 6% Wait on Weather Non Productive Time 0% 4%

524


525


Phalarope P-62 Phalarope P-62, operated by Amoco Canada, was an exploration well drilled during the fall of 1974 and into the winter of 1975 in the Whale basin of the South Newfoundland area. At a water depth of 73.2 meters, Phalarope P-62 was drilled using Sedco International’s Sedco I, a first generation, moored semisubmersible. The well was spudded on October 24, 1974 and operations were completed on January 5, 1975 after 76.9 days. Wait on weather and non-productive time accounted for 5.4 percent and 9.0 percent of total time. The most significant non-productive time delays were due to fishing operations. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 3161.7 meters (MD) was reached after 28.5 days in drilling time. The average ROP for the well was 4.5 meters per hour and at the total depth the rate was 3.6 meters per hour. Water based muds with weights ranging from 1090.4 to 1270.2 kg/m3 were used to drill the well. The well encountered Tertiary, Cretaceous and Paleozoic aged intervals however, no significant hydrocarbons were found in this well and it was plugged and abandoned (Amoco Canada Petroleum Company Limited, 1975).

526


Well Name: Amoco-Imp-Skelly Phalarope P-62

Well Summary

Well Date: October 24, 1974 - January 5, 1975


South Eastern Newfoundland Whale Fall - Winter 73.2 Exploration Sedco I (Sedco International - 1970) 1st Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


3161.7 NA 3058.7 1090.4 - 1270.2 Water Based


NA 76.9 28.5 6.9 4.1 0.0 4.3 33.0


39.8 25.1 42.2 9.0% 5.4%

Dr i l li ng M etr ics ROP while drilling (m/hr) ROP - Cretaceous(m/hr) ROP - Jurassic (m/hr) ROP - Paleozoic (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 0.8 9.8 1.1 0.8 1.7

Aver a ge 4.5 19.5 3.9 2.5 9.3

M axi mum 24.6 24.6 12.5 3.9 51.3

527


Phalarope P-62 - Time Depth Plot Time (days) 0

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Phalarope P-62 - Time Distribution

Drilling Time 37%


Data Acquisition 6%

Wait on Weather 5%


528


529


St. George J-55 St. George J-55, operated by Canterra Energy Limited, was an exploration well drilled during the spring of 1986 in the Carson basin of the South Newfoundland area. At a water depth of 106.1 meters, St. George J-55 was drilled using the SDS Vinland, a third generation, moored semi-submersible rig. The well was spudded on April 9, 1986 and operations were completed on May 27, 1986 after 53.5 days. Wait on weather and non-productive time accounted for 3.3 percent and 1.4 percent of total time. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4100 meters (MD) was reached after 53.5 days in drilling time. The average rate of penetration for the well was 6.7 meters per hour and at the total depth the rate was 2.9 meters per hour. Water based muds with weights ranging from 1020 to 1200 kg/m3 were used to drill the well. The well encountered Quaternary, Tertiary, Cretaceous and Jurassic aged intervals. There were no significant hydrocarbons found and the well was plugged and abandoned (Canterra PCI, 1986).

530


Well Name: Canterra PCI St. George J-55

Well Summary

Well Date: April 9, 1986 - May 27, 1986 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

South Eastern Newfoundland Carson Spring 106.1 Exploration SDS Vinland (S.D.S - 1982) 3rd Gen, Semi-submersible, Moored Plugged and Abandoned None Reported


4100.0 NA 3972.0 1020 - 1200 Water Based


NA 53.5 24.9 0.8 1.8 0.0 4.7 21.5


74.2 13.5 81.3 1.4% 3.3%


Mi ni mum 2.9 2.5 2.9 1.0

Aver a ge 6.7 6.2 2.9 6.3

M axi mum 41.4 12.0 3.5 14.5

531


St. George J-55 - Time Depth Plot Time (days) 0

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St. George J-55 - Time Distribution


Drilling Time 47%

Data Acquisition 9%


532


533


Narwhal F-99 Narwhal F-99, operated by North Energy Limited, was a deepwater exploration well drilled during the summer of 1987 in the South Whale basin of the South Newfoundland area. At a water depth of 1577 meters, Narwhal F-99 was drilled using Sedco International’s Sedco 710, a third generation, dynamically positioned semi-submersible rig. The well was spudded on July 17, 1987 and operations were completed on September 23, 1987 after 61.3 days. Wait on weather and non-productive time accounted for 2.0 percent and 2.2 percent of total time. Non-productive delays were mainly due to minor rig repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 4585 meters (MD) was reached after 22.2 days in drilling time. The average ROP for the well was 7.6 meters per hour and at the total depth the rate was 3.1 meters per hour. Water based muds with weights ranging from 1078.4 to 1198.3 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals during drilling. The well was plugged and abandoned (Anadrill/Schlumberger, 1988).

534


Well Name: Northcor et al Narwhal F-99

Well Summary



Southern Newfoundland South Whale Summer 1577.0 Exploration Sedco 710 (Sedco International - 1983) 3rd Gen, Semi-submersible, DP Plugged and Abandoned None Reported


4585.0 4584.0 2974.0 1078.4 - 1198.3 Water Based


NA 61.3 17.7 1.4 1.2 0.0 1.8 39.1


48.6 20.6 50.1 2.2% 2.0%

Dril l ing M etri cs ROP while drilling (m/hr) ROP - Tertiary (m/hr) ROP - Cretaceous (m/hr) Days/1000 meters while drilling (days)

Mi ni mum 2.3 12.2 2.3 2.0

Aver age 7.0 18.1 3.9 6.0

M axi mum 20.4 20.4 4.5 18.5

535


Narwhal F-99 - Time Depth Plot Time (days) 0

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Narwhal F-99 - Time Distribution

Drilling Time 29%



536


537


Lewis Hill G-85 Lewis Hill G-85, operated by Husky Oil Operations Limited, was an exploration well drilled during the summer of 2005 in the South Whale basin of the South Newfoundland area. At a water depth of 100 meters, Lewis Hill G-85 was drilled using Rowan Companies Incorporated’s Rowan Gorilla VI, a high specification jack-up rig. The rig arrived on site on July 6, 2005 and the well was spudded on July 11, 2005. Operations were completed on August 18, 2005 after 47.4 days. Wait on weather and non-productive time accounted for 5.0 percent and 11.8 percent of total time. The most significant non-productive time delays were due to BOP repairs and logging operational issues. There were no reports of ice delays during operations. As well, there were no HSE or lost time incidents but multiple safety meetings were held during operations. Total depth of 3218 meters (MD) was reached after 6.8 days in drilling time. The average ROP for the well was 18.9 meters per hour and at the total depth the rate was 9.0 meters per hour. Water based muds with weights ranging from 1020 to 1306 kg/m3 were used to drill the well. The well encountered Tertiary and Cretaceous aged intervals but the well has been plugged and abandoned (Husky Energy, 2005).

538


Well Name: Husky Oil Lewis Hill G-85

Well Summary

Well Date: July 6, 2005 - August 18, 2005 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification


Southern Newfoundland South Whale Summer 100.0 Exploration Rowan Gorilla VI (Rowan Companies Inc - 2000) High Specification Jack-up Plugged and Abandoned None Reported


3218.0 3218.0 3071.0 1020 - 1306 Water Based


NA 47.4 6.8 5.6 2.4 0.0 1.8 30.9


64.7 15.4 67.3 11.8% 5.0%


Mi ni mum 3.7 13.1 3.7 1.2


Aver a ge 18.9 33.5 12.2 2.2

M axi mum 39.3 39.3 39.3 11.3

539


Lewis Hill G-85 - Time Depth Plot Time (days) 0

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South NL Area Maximum (m) Lewis Hill G-85

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Lewis Hill G-85 - Time Distribution Drilling Time 14% Non Productive Time 12%



540


541


East Wolverine G-37 East Wolverine G-37, operated by ConocoPhillips Canada Resources Corporations, was an exploration well drilled during the fall of 2009 and winter and spring of 2010. The well was the first drilled in the Laurentian basin of the Southern Newfoundland area. At a water depth of 1890.6 meters, East Wolverine G-57 was drilled using Stena Drilling’s Stena Carron, a sixth generation, drillship with dynamic positioning and mooring capabilities. The well was spudded on November 24, 2009 and operations were completed on April 27, 2010 after 157.9 days. Wait on weather and non-productive time accounted for 18.6 percent and 26.3 percent of total time. The most significant non-productive time delays were due to weather related BOP repairs. There were no reports of ice delays or HSE or lost time incidents during operations. Total depth of 6857 meters (MD) was reached after 15.8 days in drilling time. The average rate of penetration for the well was 13.0 meters per hour and at the total depth the rate was 7.3 meters per hour. Water based muds with weights ranging from 1031 to 1438 kg/m3 were used to drill the well until 3535.2 meters (MD) and then synthetic based muds with weights ranging from 1198 to 1702 kg/m3 were used until total depth. The well encountered Tertiary, Cretaceous and Jurassic aged intervals and the well was plugged and abandoned (ConocoPhillips Canada Resources Corporation, 2010).

542


Well Name: East Wolverine G-37

Well Summary

Well Date: November 24, 2009 - April 27, 2010 Gener a l Over vi ew Offshore Region Basin Drilling Season Water Depth (m) Well Classification Rig Name (Owner - Year Built) Rig Type Current Well Status HSE Incidents

Southern Newfoundland Laurentian Fall - Winter - Spring 1890.6 Exploration Stena Carron (Stena Drilling - 2008) 6th Gen, Drillship, DP & Moored Plugged and Abandoned None Reported




164.4 157.9 15.8 41.5 29.4 0.0 2.8 68.4


31.3 32.0 31.8 26.3% 18.6%


Mi ni mum 4.4 16.7 9.8 4.4 1.3

Aver a ge 13.0 19.4 13.5 8.2 3.2

M axi mum 32.9 22.6 16.7 13.0 9.5

543


East Wolverine G-37 - Time Depth Plot Time (days) 0

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East Wolverine G-37 3000

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East Wolverine G-37 - Time Distribution Drilling Time 10% Other Rig Operations 43%


Data Acquisition 2%

Wait on Weather 19%

544


545

Drilling Performance Review Final

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