.
JANGKRIK COMPLEX PROJECT
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
00 Rev Number
EX-DE Validity Status
13/05/16
First Issue
Fang Ping
A.Suryodipuro
R. Panighello
Date
Description Descriptio n
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Revision Index
Company logo and business name
Eni Muara Bakau B.V.
Facility Sub Facility Name
Project name Jangkrik
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220800DPRVE0198 Job N. Scale n.a.
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JANGKRIK SYSTEM INTEGRATION Document Title
Supersedes N.
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
Superseded by N. Plant Area n.a
This document is property of Eni Muara Bakau B. V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
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220800DPRVE0198
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TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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Jangkrik Complex Project
The document covers event description related to the requirement of SSIV re-opening T C
under high differential pressure, identifications of possible negative impacts, and A R T
discussions on several potential solutions. The aim is to find the optimum solution to be S B A
implemented in current design and operating procedure.
Document Verification Prepared by y
Unit
d n
er Fang Ping a
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Unit
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Engineering
a p
Signature
p m
er Main contributions o P C
w
Rafi’ i, Muhammad Vaulzan, Francesco Roccaforte
ei v
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Alberto Bellini
Projects
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Bobby Weliyanto
Engineering
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Reinwardt Firdaus
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e y R n . a pi p c m is o DC r et nI
y a
d Andika Diwaji Suryodipuro e m
e
n k p
Engineering
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h Checked by o C C
d
Approved by
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e Roberto Panighello v
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p Endorsed by
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n or p o C A
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Tumiran
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REVISION List 00
First Issue
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
Eni Muara Bakau B.V
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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TABLE OF CONTENTS
1. INTRODUCTION .................................................................................................... 4 1.1 Background........................................................................................................... 4 1.2 Acronyms/Abbreviations ...................................................................................... 4 1.3 Referenced Documents ......................................................................................... 5 1.4 Scope of the Document ......................................................................................... 5 2. EXECUTIVE SUMMARY ........................................................................................... 6 3. NEW PIPELINE FROM ORF TO KM-21.65 ............................................................... 7 3.1 Schematic of Segregation ..................................................................................... 7 3.2 Feed Basis............................................................................................................. 8 3.3 Design Option ....................................................................................................... 8 4. CONCLUSIONS .................................................................................................... 11
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
Eni Muara Bakau B.V
1.
INTRODUCTION
1.1
BACKGROUND
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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Jangkrik Field (also abbreviated as JKK) is located about 70 km from the coast, in the Muara Bakau permit area, Makassar Strait, offshore Borneo of Indonesia, at a water depth ranging from 250 to 500 m. Current production capacity of Jangkrik is 450 MMSCFD. Jangkrik lean gas production flows through 42” pipeline and gets mixed with rich gas from other producers (TEPI, VICO, Mubadala) in the region. In order to equalize the produced lean gas, LPG Injection of approximately 40.000 ton conducts before the lean gas entering LNG Bontang Plant. LPG Injection process cost a lot; it costs about 500 USD/ton (equal to 20 million USD per month or 240 million USD per year). in 42" pipeline it causes in total loss production revenue. Besides that, potential back When shutdown happens pressure in 42” pipeline to TEPI facility in case the export gas pressure from TEPI going down as their production profile will naturally decrease significantly after passing through the plateau phase. Contrary to the above, the increment of TEPI production will limit the production of Jangkrik in term of the 42” Pipeline capacity. Jangkrik maximum production is limited by the available amount of rich gas that can enter Bontang LNG plant to ‘enrich’ the lean gas due operational limitation. By maximizing lean gas to domestic and swapping with existing rich gas, Jangkrik production can be increased temporarily without modifying Bontang LNG plant. 1.2
ACRONYMS/ABBREVIATIONS Acronyms
Abbreviation
BEM
Badak Export Manifold
FPU
Floating Production Unit
JKK
Jangkrik Main
JNE
Jangkrik North East
MMSCFD
Million Standard Cubic Feet per Day
ORF
Onshore Receiving Facility
P&ID
Piping and Instrumentation Diagram
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
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1.3
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REFERENCED DOCUMENTS [1]
[2]
Floating Production Unit - EPCI-1 Process Basis of
220801DPSP10000_EXDE02_32-
Design for Jangkrik FPU
BOD
Floating Production Unit – EPCI-1 Topside process
220801DPRV1009_EXDE03_57
Description
1.4
[3]
Integrated Process Flow Diagram
[4]
Technical Justification 20” to 36”
220800DGFQE0063_EXDE01_01
SCOPE OF THE DOCUMENT
The document covers description of the event, identifications of possible negative impacts, and discussions on several potential solutions. Most importantly, this document is aiming to find the optimum solution to be implemented in current design and operating procedure.
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
Eni Muara Bakau B.V
2.
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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EXECUTIVE SUMMARY
To increase jangkrik production, the possible scenario is by changing ENI’s lean gas with rich gas because ENI existing lean gas is mixed by rich gas from other producer resulting ENI’s lean gas to be contaminated. To make sure the productivity of ENI’s lean gas is not disturbed, lean gas pipeline should be converted into new pipeline that will not contaminate the gas. The new pipeline will connect from Onshore Receiving Facility (ORF) to Badak Export Manifold (BEM) through Nilam. The selection of the pipe will be chosen by simulating different pipeline size from 20”, 24”, 30”, 32”, and 36” with OLGA. The simulation using several basis to determine the optimum pipeline size to deliver 600 MMSCFD jangkrik gas to BEM. The result shows that the usable pipeline size is 30”, 32”, and 36” because the FPU departure pressure to deliver 600 MMSCFD is under specified basis (Max. 103 barg) and maximum gas flowrate is 310 MMSCFD for the three pipeline size. The pipeline size 20” and 24” can’t be used as the maximum gas flowrate is only 260 and 290 MMSCFD. Technically, the pipeline size 30” is already capable to deliver the required gas flowrate, but for further consideration as the Jangkrik production will be improved to 1000 MMSCFD, the pipeline size 36” is chosen to accommodate increased capacity. Based on simulation results, review, and analysis, using 36” pipeline is considered to be the best solution By using OLGA simulation, there’re several important points:
The optimum pipeline size for delivering 300 MMSCFD from ORF to KM-21.65 is 30.
Nilam pressure by delivering 300 MMSCFD to KM-21.65 by using:
o
New 30” pipeline
: 641 psig (44.2 barg)
o
New 36” pipeline
: 641 psig (44.2 barg)
KM-21.65 pressure by delivering 300 MMSCFD to KM-21.65 by using: o
New 30” pipeline
: 925.7 psig (63.8 barg)
o
New 36” pipeline
: 925.6 psig (63.8 barg)
The bottle neck for delivering 600 MMSCFD Jangkrik gas to BEM is on 20” Handil-Nilam pipeline. This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
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220800DPRVE0198 TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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NEW PIPELINE FROM ORF TO KM-21.65
For the development, 60 km long pipeline from Onshore Receiving Facility (ORF) to KM-21.65, through Nilam will be built and the existing 42” pipeline from PPA to BEM will be adjusted, in order to reduce LPG injection and increasing production capacity of Jangkrik. 3.1
SCHEMATIC OF SEGREGATION 600 MMscfd
ORF
PKT KDM SKG
36” 15 km
SAPI SOUTH MAHAKAM
KPA KPI
310 MMscfd
KMI
290 MMscfd
PLN
42” 75 km
PECIKO
BME 450 MMscfd
1st Tie-In
KM53 Station
SEMBERAH
MUTIARA 20” 45 km
16” 36” 15 km
HANDIL 2nd Tie-In
NILAM
20”
BADAK MANIFOLD
CPU (Tambora) NPU
New Line Existing Line
TRF
42” C/D 42”H 36”AB 36” F
24”
KM-29 PTB
SANTAN TERMINAL
Sisi Nubi
IDD
The new pipeline concept will replace existing design by creating new 36” pipeline. From ORF to Nilam, 15 km 36” pipeline will be connected to the existing 20” pipeline in the 2 nd Tie-In. In order to do that, the Handil and Mutiara stream will be diverted into the 42” pipeline from Peciko into Badak Manifold. From Nilam to Badak Manifold will be connected by 15 km 36” pipeline. From Badak Manifold, the stream will be diverted to PTB and SKG by 36” AB pipeline.
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
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3.2
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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FEED BASIS The new pipeline from ORF to KM-21.65 builds to replace existing 42” pipeline. The
basis for new pipeline from ORF to KM-21.65 is:
3.3
FPU departure pressure
: 103 barg
LNG Badak arrival pressure : 41.2 barg (598 psig)
Gas Flowrate: o
From FPU
: 600 MMSCFD
o
From Nilam
: 30 MMSCFD
o
To SKG
: 450 MMSCFD (adjusted rich gas top-up will be from BEM)
o
42” PPA-BEM
: adjusted
DESIGN OPTIONS
There’re five new pipeline options that purposed. The proposed pipelines size ranging from 20”, 24”, 30”, 32”, and 36”. The proposed options were simulated based on OLGA simulation using assigned basis. Table 3-1 Simulation of 20” Pipeline
Table 3-1 represents simulation result of 20” pipeline. With 600 MMSCFD gas flow rate from FPU, 30 MMSCFD from Nilam, and 450 MMSCFD to SKG it needs 102.2 barg departure FPU pressure (departure pressure in the pipeline should be lower than assigned basis). The maximum gas flowrate that could pass the 20” pipe is 210 MMSCFD, which is smaller than expected. As result, 20” pipeline can’t be use to replace the existing pipeline.
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
Eni Muara Bakau B.V
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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Table 3-2 Simulation of 24” Pipeline
Table 3-2 shows the second proposed pipeline sized 24” . The gas flowrate from FPU is 600 MMSCFD, Nilam 30 MMSCFD, and 450 MMSCFD to SKG. Departure pressure from the FPU in 24” pipeline is 102.4 barg. Final flowrate in 24” pipeline is 290 MMSCFD. Although the flowrate bigger than the first option, the flowrate still smaller than expected. In short, 24” pipeline doesn’t fit for replacing the existing pipeline. Table 3-3 Simulation of 30” Pipeline
For 30” pipeline in table 3-3, when 600 MMSCFD from FPU, 30 MMSCFD from Nilam, and 450 MMSCFD to SKG gases flow into the pipeline, it will have 102.9 barg departure pressure from FPU. 310 MMSCFD final flowrate generates form this pipeline, which is bigger than the previous options. So, it considered technically acceptable. Although 30” pipeline generates 310 MMSCFD flow rate, this pipeline still not feasible to replace the existing one, beca use it can’t occupy gas flowrate higher than 600 MMSCFD in the future.
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
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TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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Table 3-4 Simulation of 32” Pipeline
The 32” pipeline simulation shown in table 3-4. In 32” pipeline, the gas flow from the FPU is 600 MMSCFD 600 MMSCFD from FPU, 30 MMSCFD from Nilam, and 450 MMSCFD to SKG. It has 102.7 barg departure pressures from FPU. The Maximum flowrate in 32” pipeline is equal with 30” pipeline, reaches 310 MMSCFD. The 32” pipeline considered technically feasible, although it can’t handle more than 600 MMSCFD flowrate in future development. Table 3-5 Simulation of 36” Pipeline
The last & biggest new pipeline option sized 36”. As shown in table 3-5, the gas flowrate in this pipeline is same with other pipeline which is 600 MMSCFD from FPU, 30 MMSCFD from Nilam, and 450 MMSCFD to SKG. The maximum gas flowrate in this pipeline is same with 30” & 32” pipeline. The 36” pipeline is technically acceptable. But, unlike 30” & 32” pipeline, this pipeline is considered feasible to replace the existing 42” pipeline because this pipeline could handle more than 600 MMSCFD flowrate.
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
220800DPRVE0198
Eni Muara Bakau B.V
4.
TECHNICAL NOTE New Pipeline from ORF to KM-21.65
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CONCLUSIONS
Based on five simulations from different pipeline sizes for first phase development, there’re several important points:
The optimum pipeline size for delivering 300 MMSCFD from ORF to KM-21.65 is 30.
Nilam pressure by delivering 300 MMSCFD to KM-21.65 by using:
o
New 30” pipeline
: 641 psig (44.2 barg)
o
New 36” pipeline
: 641 psig (44.2 barg)
KM-21.65 pressure by delivering 300 MMSCFD to KM-21.65 by using: o
New 30” pipeline
: 925.7 psig (63.8 barg)
o
New 36” pipeline
: 925.6 psig (63.8 barg)
The bottle neck for delivering 600 MMSCFD Jangkrik gas to BEM is on 20” Handil-Nilam pipeline.
This document is property of Eni Muara Bakau B.V. It shall neither be shown to Third Parties not used for purposes other than those for which it has been sent.
