Chart Book Wft037399

Wireline Services Log Interpretation

Chart Book

Wireline Services Log Interpretation

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Table of Contents

Char t

Page

Section 1 - General Information

Borehole Environment and Formation Formation Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . . . . . 2 Unit Conversions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 . . . . . . . . . . 3 Logging Tool Response Response in Sedimentary Minerals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 . . . . . . . . . . 6

Section 2 - Temperature and Fluids

Estimation of Formation Temperature Temperature (English). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 . . . . . . . . . 10 Estimation of Formation Temperature Temperature (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 . . . . . . . . . 11 Resistivity vs. Temperature Temperature – NaCl Solutions (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 . . . . . . . . . 12 Resistivity vs. Temperature Temperature – NaCl Solutions (Metric). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 . . . . . . . . . 13 Resistivity of Equivalent NaCl Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 . . . . . . . . . 14 Estimation of R mf and Rme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 . . . . . . . . . 15

Section 3 - Spontaneous Potential

SP Bed Thickness Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 . . . . . . . . . 18 Rwe Determination from Static SP (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 . . . . . . . . . 19 Rwe Determ Determinati ination on from Static Static SP (Metric) (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 . . . . . . . . . 20 Rw vs. Rwe (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 . . . . . . . . . 21 Rw vs. Rwe (Met (Metric) ric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 . . . . . . . . . 22

Section 4 - Natural Radioactivity

Gamma Ray Borehole Correction Correction Chart for Borehole Size and Mud Weight (English) . . . . . . . . . . . . . 4-1 . . . . . . . . . 24 Gamma Ray Borehole Correction Correction Chart for Borehole Size and Mud Weight (Metric) . . . . . . . . . . . . . . 4-2 . . . . . . . . . 25 Spectral Gamma Ray Response Response Borehole Size and Mud Weight Correction Correction (English) . . . . . . . . . . . . . 4-3 . . . . . . . . . 26 Spectral Gamma Ray Response Borehole Size and Mud Weight Correction (Metric) . . . . . . . . . . . . . . 4-4 . . . . . . . . . 27 Spectral Gamma Ray Potassium Potassium Response Borehole Size Size and Mud Weight Correction (English) . . . . . 4-5 . . . . . . . . . 28

Table of Contents (continued)

Spectral Gamma Ray Potassium Response Borehole Size and Mud Weight Correction (Metric). . . . . . 4-6 . . . . . . . . . 29 Spectral Gamma Ray Uranium Response Borehole Size and Mud Weight Correction (English) . . . . . . 4-7 . . . . . . . . . 30 Spectral Gamma Ray Uranium Response Borehole Size and Mud Weight Correction (Metric) . . . . . . . 4-8 . . . . . . . . . 31 Spectral Gamma Ray Thorium Response Borehole Size and Mud Weight Correction (English) . . . . . . . 4-9 . . . . . . . . . 32 Spectral Gamma Ray Thorium Response Borehole Size and Mud Weight Correction (Metric) . . . . . . . 4-10 . . . . . . . . 33 Spectral Gamma Ray Correction for KCI Mud (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11 . . . . . . . . 34 Spectral Gammy Ray Correction for KCI Mud (Metric). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12 . . . . . . . . 35 Spectral Gamma Ray Potassium Response Correction for KCI Mud (English) . . . . . . . . . . . . . . . . . . . 4-13 . . . . . . . . 36 Spectral Gamma Ray Potassium Response Correction for KCI Mud (Metric) . . . . . . . . . . . . . . . . . . . 4-14 . . . . . . . . 37

Section 5 - Resistivity

Guidelines for Choosing Induction Logs or Dual Laterologs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 . . . . . . . . . 40 Mudcake Correction for Micro Spherically Focused Log (MSFL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 . . . . . . . . . 41 Rxo from Micro Spherically Focused Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 . . . . . . . . . 42 Borehole Correction for Spherically Focused Log (SFL) as part of the STI Tool Combination . . . . . . . . 5-4 . . . . . . . . . 43 Borehole Correction for Simultaneous Triple Induction (STI) Tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5 . . . . . . . . . 44 Simultaneous Triple Induction (STI) Bed Thickness Correction Medium Induction, Bed Thickness 2–4 ft (0.6–1.2 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 . . . . . . . . . 45 Simultaneous Triple Induction (STI) Bed Thickness Correction Medium Induction, Bed Thickness > 4 ft (1.2 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7 . . . . . . . . . 46 Simultaneous Triple Induction (STI) Bed Thickness Correction Deep Induction, Bed Thickness 2–4 ft (0.6–1.2 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8 . . . . . . . . . 47 Simultaneous Triple Induction (STI) Bed Thickness Correction Deep Induction, Bed Thickness > 4 ft (1.2 m) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 . . . . . . . . . 48 Rt and Rxo from Simultaneous Triple Induction (STI) Spherically Focused Log (SFL), Rxo /Rm = 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10 . . . . . . . . 49 Rt and Rxo from Simultaneous Triple Induction (STI) Spherically Focused Log (SFL), Rxo /Rm = 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11 . . . . . . . . 50 Borehole Correction for Dual Laterolog (DLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12 . . . . . . . . 51 Rt and Rxo from Dual Laterolog (DLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13 . . . . . . . . 52


Section 6 - Porosity and Lithology

Porosity Determination from Sonic Log (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 . . . . . . . . . 54 Porosity Determination from Sonic Log (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2 . . . . . . . . . 55 Compensated Neutron Lithology Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 . . . . . . . . . 56 Compensated Neutron Standoff Correction (6- and 8-in. bh) (English) . . . . . . . . . . . . . . . . . . . . . . . . 6-4 . . . . . . . . . 57 Compensated Neutron Standoff Correction (10- and 12-in. bh) (English) . . . . . . . . . . . . . . . . . . . . . . 6-5 . . . . . . . . . 58 Compensated Neutron Standoff Correction (14- and 16-in. bh) (English) . . . . . . . . . . . . . . . . . . . . . . 6-6 . . . . . . . . . 59 Compensated Neutron Standoff Correction (150- and 200-mm bh) (Metric). . . . . . . . . . . . . . . . . . . . 6-7 . . . . . . . . . 60 Compensated Neutron Standoff Correction (250- and 300-mm bh) (Metric). . . . . . . . . . . . . . . . . . . . 6-8 . . . . . . . . . 61 Compensated Neutron Standoff Correction (350- and 400-mm bh) (Metric). . . . . . . . . . . . . . . . . . . . 6-9 . . . . . . . . . 62 Compensated Neutron Mud Weight Correction for Calcite Mud (English and Metric). . . . . . . . . . . . . . 6-10 . . . . . . . . 63 Compensated Neutron Mud Weight Correction for Barite Mud (English and Metric) . . . . . . . . . . . . . . 6-11 . . . . . . . . 64 Compensated Neutron Mud Weight Correction for Hematite Mud (English and Metric) . . . . . . . . . . . . 6-12 . . . . . . . . 65 Compensated Neutron Mudcake Correction for Calcite Mud (English and Metric). . . . . . . . . . . . . . . . 6-13 . . . . . . . . 66 Compensated Neutron Mudcake Correction for Barite Mud (English and Metric) . . . . . . . . . . . . . . . . 6-14 . . . . . . . . 67 Compensated Neutron Mudcake Correction for Hematite Mud (English and Metric) . . . . . . . . . . . . . . 6-15 . . . . . . . . 68 Compensated Neutron Formation Salinity Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16 . . . . . . . . 69 Compensated Neutron Formation Matrix Capture Cross Section Correction . . . . . . . . . . . . . . . . . . . . 6-17 . . . . . . . . 70 Compensated Neutron Temperature Correction (English and Metric) . . . . . . . . . . . . . . . . . . . . . . . . . 6-18 . . . . . . . . 71 Compensated Neutron Pressure Correction (English and Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19 . . . . . . . . 72 Compensated Neutron Borehole Size and Salinity Correction (6- and 8-in. bh) (English) . . . . . . . . . . . 6-20 . . . . . . . . 73 Compensated Neutron Borehole Size and Salinity Correction (10- and 12-in. bh) (English) . . . . . . . . . 6-21 . . . . . . . . 74 Compensated Neutron Borehole Size and Salinity Correction (14- and 16-in. bh) (English) . . . . . . . . . 6-22 . . . . . . . . 75 Compensated Neutron Borehole Size and Salinity Correction (150- and 200-mm bh) (Metric) . . . . . . . 6-23 . . . . . . . . 76 Compensated Neutron Borehole Size and Salinity Correction (250- and 300-mm bh) (Metric) . . . . . . . 6-24 . . . . . . . . 77 Compensated Neutron Borehole Size and Salinity Correction (350- and 400-mm bh) (Metric). . . . . . . 6-25 . . . . . . . . 78 Porosity and Lithology from Compensated Neutron and Spectral P e Density (SPeD) Log—Fresh Mud System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26 . . . . . . . . 79 Porosity and Lithology from Compensated Neutron and Spectral P e Density (SPeD) Log—Salt Mud System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27 . . . . . . . . 80 Porosity and Lithology from Compensated Neutron and Sonic Log (English) . . . . . . . . . . . . . . . . . . . 6-28 . . . . . . . . 81


Porosity and Lithology from Compensated Neutron and Sonic Log (Metric) . . . . . . . . . . . . . . . . . . . . 6-29 . . . . . . . . 82 Porosity and Lithology from Sonic and Spectral P e Density (SPeD) Log—Fresh Water (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30 . . . . . . . . 83 Porosity and Lithology from Sonic and Spectral P e Density (SPeD) Log—Fresh Water (Metric). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31 . . . . . . . . 84 Spectral P e Density (SPeD) Photoelectric Correction for Borehole Size . . . . . . . . . . . . . . . . . . . . . . . 6-32 . . . . . . . . 85 Porosity and Lithology from Spectral P e Density (SPeD) Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33 . . . . . . . . 86 Apparent Matrix Volumetric Photoelectric Factor Spectral P e Density (SPeD) Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34 . . . . . . . . 87 Matrix Identification Plot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-35 . . . . . . . . 88

Section 7 - Pulsed Neutron

Determination of Sigma Gas—English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 . . . . . . . . . 90 Determination of Sigma Gas—Metric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 . . . . . . . . . 91 Determination of Sigma Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 . . . . . . . . . 92 Neutron Capture Cross Section of Wet Gas. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4 . . . . . . . . . 93 Correction of Sigma Gas for Condensate Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 . . . . . . . . . 94

Section 8 - Miscellaneous

Reservoir Permeability Estimate from Log Data—Morris & Biggs Equation . . . . . . . . . . . . . . . . . . . . 8-1 . . . . . . . . . 96 Reservoir Permeability Estimate from Log Data—Timur Equation . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 . . . . . . . . . 97 Conductivity Derived Water Filled Porosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3 . . . . . . . . . 98 Cement Bond Log Interpretation Chart (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4 . . . . . . . . . 99 Cement Bond Log Interpretation Chart (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5 . . . . . . . . 100 Formation Strength Parameter Equations Used in Well Logging Terms. . . . . . . . . . . . . . . . . . . . . . . . 8-6 . . . . . . . . 101 Formation Strength Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7 . . . . . . . . 102 Formation Strength Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8 . . . . . . . . 103 Mineral Identification from Spectral Gamma Ray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9 . . . . . . . . 104 Shale Volume from Radioactivity Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10 . . . . . . . 105 Tool Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11 . . . . . . . 106

Section 1

General Information

Borehole Environment and Formation Parameters

Transition Zone Rannulus

1-1 © 2006–2007 Weatherford. All rights reserved.

2

Unit Conversions

Length

Oil Gravity in degrees API is computed as:

1 1 1 1

˚API =

inch (in.) . . . . . . . . . . . . . . . . . . . . . . . . 2.540 cm foot (ft) . . . . . . . . . . . . . . . . . . . . . . . . . 30.48 cm meter (m) . . . . . . . . . . . . . . . . . . . . . . . 39.37 in. meter (m) . . . . . . . . . . . . . . . . . . . . . . . 3.281 ft

141.5 Spec. Grav. @ 60 ˚F

- 131.5

Pressure Volume

1 atmosphere (atm) . . . . . . . . . . . . . . . . . 14.70 psi 1.0332 kPa

1 barrel (bbl) of oil . . . . . . . . . . . . . . . . . . 42 U.S. gal 5.6154 ft 3 158.98 L

1 pound per square inch (psi) . . . . . . . . . . 6.89 kPa .06894 bar

1 U.S. gallon (gal) . . . . . . . . . . . . . . . . . . . 231.00 in. 3 0.1337 ft 3 3.785 L

1 kilogram per square centimeter (kg/cm 2) . . . . . . . . . . . . . . . . . 14.22 psi

1 L (1000 cm 3 ) . . . . . . . . . . . . . . . . . . . . 0.03532 ft 3 0.2642 U.S. gal 0.001 m3

Pressure Gradient psi/ft

1 acre . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,758 bbl 43,560 ft 3 1233 m3

kPa

1 cubic foot (ft 3 ). . . . . . . . . . . . . . . . . . . . 7.481 U.S. gal 28.32 L

= = =

0.433 x kPa/m lb/ft3 /144 l b/gal/19.27

= =

0.433 x kPa psi/ft x 0.231

= = = =

1.8˚C + 32 (˚F - 32)/1.8 x ˚C ˚F + 459.69 ˚C + 273.16

Temperature Conversions

˚F ˚C ˚R (Rankine)

1 imperial gal (England, Canada, Australia, etc) . . . . . . . . 1.2009 U.S. gal 4.546 L

K (kelvin)

Mass

Concentration

1 grain . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0001429 (or 1/7000 lb) 0.6480 g

1 grain/U.S. gal . . . . . . . . . . . . . . . . 17.118 ppm 1 gram/L . . . . . . . . . . . . . . . . . . . . . 58.417 grains/gal

1 pound (lb) . . . . . . . . . . . . . . . . . . . . . . . 0.4536 kg 1 metric ton (1000 kg) . . . . . . . . . . . . . . . 2205 lb

Density, Specific, Gravity, etc.

1 gram per cubic centimeter (g/ cm3 ) . . . . . 62.43 lb/ft 3 8.345 lb/gal

1 U.S. gallon of liquid weighs (in lb) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.345 multiplied by density in g/cm3

1 imperial gallon of water at 62˚F weighs . . . . . . . . . . . . . . . . . . . . . 10 lb

1 barrel of oil weighs (in lb) . . . . . . . . . . . . 350 multiplied by density of oil in g/cm 3


3

Unit Conversions

Oil Gravity Specif ic Gravity @ 60˚F

˚API

R vity Conductivity C R (mmho - m) (ohm - m)

0

8

0

esistiPressure

MPa 0

Temperature

psi

˚C

˚F

0

0

32

Depth

m

Temperature Gradient Conversion

ft

˚F/100 ft

0

˚C /100 m

2.0

50 1.0

10

1.9

20

100

5,000

0.9

1.8 5,000

50 150 2,000

40

0.5

3.0

100 1,000

100

10,000 1.5

15,000

250 4,000

70

1.4 2.5

80 141. 5

1.6 3,000

1

60

sp. gr. @ 60˚F

1.7

200

50

API =

2,000

10,000

0.8

0.7

1,000

50 30

3.5

20,000

150

300

200

350

5 25,000 200

100

1.2

6,000 400

20,000

2.0

1.0 30,000

450

7,000

psi = MPa x 145.038 250

25,000 500

0.9 1.5

8,000

0.8

˚C = (˚F - 32) • 5 /9 ˚F = (˚C • 9 /5) + 32 50

0.7

9,000

10

1.1

10 200

20

1.3

5,000

150

-131.5

15,000

30,000

1 m = 3.28 ft

100

0.6 1.0 1˚F/100 ft = 1.822˚C /100 m 1˚C /100 m = 0.5488 ˚F/100 ft

5 4 3 2

500

1

1,000


4

Unit Conversions

Mud Weight or Pressure Gradient g/cm3

lb/ft3

lb/gal

psi/ft

NaCl Solution Concentration grains/gal

ppm

(@ 77˚F) 1.0

62.4

8.345

0.433

5.8

g/L

ppm

(@ 77˚F)

100

0.1

100

500

0.5

500

0.45 1.1

9 70

10 0.50 10

1.2

1.3

0.55

80

20

11 30

0.60

1.0 90

12

40 50

0.65

1.5 13 1.6

100

1,000

1

1,000

5,000

5

5,000

0.70 100

14 1.7 0.75

110

150

15

1.8

200 0.80

1.9

120

250 300

16 0.85

2.0

400 500

17 130

0.90

2.1

10,000

10

10,000

50,000

50

50,000

18 1,000

0.95

2.2 140 19 2.3

1.00 20

2.4

1 g/cm3 = 62.43 lb/ft3 = 8.345 lb/gal (U.S.) psi/ft = 0.433 g/cm = lb/ft3 /144 = lb/gal/19.27

5,000

•

100,000

10,000 200,000

300,000


5

100

200

300

100,000

200,000

300,000

Logging Tool Response in Sedimentary Minerals

ρ

Name

Formula

LOG

φ

CNT

∆t c

∆t s

Pe

U

GR

Σ

g/cm3

p.u.

µs/ft

µs/ft

barn/ elect

barn/cm3

API units

c.u.

55

77

1.81

4.78

—

4.26

1.81

4.16

—

3.75

1.75

3.71

—

4.80

Silicates

Quartz

SiO2

2.64

-1.9

Cristobalite

SiO2

2.30

-2.9

Opal (3.5% H 20)

SiO2 (H20).1209

2.12

2.0

58

Garnet

Fe3 Al2 (SiO4)3

4.31

6.0

36

64

11.09

47.80

—

45.0

Hornblende

Ca2 NaMg2 Fe2 AlSi8 O22 (O,OH)2

3.15

7.0

44

82

5.99

18.87

—

18.0

Tourmaline

NaMg3Al6B3Si6O2(OH)4

2.98

21

2.14

6.38

—

7485

Calcite

CaCO3

2.71

0

48

89

5.08

13.77

—

7.10

Dolomite

CaCO3 MgCO3

2.87

1.8

43

73

3.14

9.01

—

4.70

Ankerite

Ca(Mg,Fe)(CO3)2

2.90

1.0

53

84

9.32

27.03

—

21.0

Siderite

FeCO3

3.89

11.5

45

85

14.69

57.14

—

52.5

Hematite

Fe2 O3

5.18

10.0

45

74

21.48

111

—

101

Magnetite

Fe3 O4

5.09

8.0

73

155

22.24

113

—

103

Geothite

FeO(OH)

4.28

60+

19.02

81.41

—

84.0

Limonite

FeO(OH)(H2O)2.05

3.60

60+

13.00

46.80

—

71.0

Gibbsite

Al(OH)3

2.49

60+

1.10

2.74

—

26.0

Hydroxyapatite

Ca5(PO4)3OH

3.17

7.5

43

5.81

18.42

—

10.50

Chlorapatite

Ca5(PO4)3Cl

3.18

-1.0

42

6.06

19.27

—

131

Fluorapatite

Ca5(PO4)3F

3.21

-1.5

44

5.82

18.68

—

9.00

Carbonapatite

(Ca5(PO4)3)2CO3H2O

3.13

8.0

5.58

17.47

—

9.09

Carbonates

Oxidates

57

103

Phosphates

70

80

Reference: “Radioactive Logging Parameters for Common Minerals”; 1979; Edmundson, H. and Raymer, L.L., SPWLA 20th Annual Logging Symposium, June, 1979, Tulsa.


6


ρ

Name

Formula

LOG

φ

CNT

∆t c

∆t s

Pe

U

GR

Σ

API units

c.u.

g/ cm3

p.u.

µs / ft

µs / ft

barn / e lect

barn / cm3

212

328

1.83

4.76

80 - 130

13.2

Clays

Kaolinite

Al4Si4O10(OH)8

2.60

40

Chlorite

(Mg,FeAl)6(Si,Al)4O10(OH)8

2.76

52

6.30

17.39

180 - 250

25.0

Illite

K1-15 Al4(Si7-6.5,Al1-1.5O20(OH)4

2.61

20

3.45

9.00

250 - 300

17.0

2.12

40

2.04

4.32

150 - 200

14.4

Smectite

(Ca,Na)7(Al,Mg,Fe)4 (Si,Al)8O20(OH)4(H2O)n

Coals

Anthracite

CH.358N.009O.022

1.55

40

105

0.16

0.25

—

9.21

Bituminous

CH.793N.015O.078

1.30

60+

120

0.17

0.23

—

16.2

Lignite

CH.849N.015O.211

1.05

55

160

0.20

0.21

—

12.8

Muscovite

KAl2 (Si3AlO10)(OH)2

2.82

18.0

50

~ 270

16.9

Glauconite

K2(Mg,Fe)2Al6(Si4OH10)3(OH)2

2.54

30

Biotite

K(Mg,Fe)3(AlSi3O10(OH)2

2.99

20

Phlogopite

KMg3(AlSi3O10(OH)2

Micas

100

51

220

50

207

2.40

6.77

6.37

16.18

6.27

18.75

24.1 ~ 275

30.0 33.3

Felds pars

Orthoclase

KAlSi3O8

2.53

-2.5

69

2.86

7.24

~ 2 20

15.5

Anorthoclase

KAlSi3O8

2.56

-1.8

69

2.86

7.32

~ 2 20

15.9

Microcline

KAlSi3O8

2.56

-2.5

45

2.86

7.32

~ 2 20

15.3

Albite

NaAlSi3O8

2.60

-1.5

49

1.68

4.37

—

7.52

Anorthite

CaAl2Si2O8

2.75

-1.7

45

3.13

8.61

—

7.33


7

85


ρ Name

Formula

LOG

φ

CNT

∆t c

∆t s

g/cm3

p.u.

µs/ft

µs/ft

Pe

U

GR

Σ

barn/ elect

barn/cm3

API units

c.u.

Evaporites

Halite

NaCl

2.04

-2.5

67

116

4.65

9.49

—

762

Anhydrite

CaSO4

2.98

-1.5

50

98

5.05

15.05

—

12.4

Gypsum

CaSO4(H2O)2

2.35

60+

53

3.99

9.38

—

18.6

Trona

Na2CO3NaHCO3H2O

2.09

40

65

1.48

—

16.9

Tachydrite

CaCl2(MgCl2)2(H2O)12

1.66

60+

92

3.84

6.37

—

406

Sylvite

KCl

1.87

-3.0

74

8.51

15.91

500+

561

Carnalite

KClMgCl2(H2O)6

1.57

60+

79

4.09

6.42

~ 220

369

Langbenite

K2SO4(MgSO4)2

2.82

-1.5

52

3.56

10.04

~ 290

24.1

Polyhalite

K2SO4(MgSO4)2(CaSO4)2(H2O)2

2.79

23

58

4.32

12.05

~ 200

23.7

Kainite

MgSO4KCl(H2O)3

2.13

60+

3.50

7.46

~ 245

196

Kieserite

MgSO4H2O

2.59

40

1.83

4.74

—

14.0

Epsomite

MgSO 4(H2O)7

1.71

60+

1.15

1.97

—

21.5

Bischofite

MgCl2(H2O)6

1.54

60+

100

2.59

3.99

—

323

Barite

BaSO4

4.09

-1.5

69

133

267

1092

—

21.0

Celestite

SrSO4

3.79

-1.0

60

149

55.2

209

—

22.4

Pyrite

FeS2

5.00

-2.5

38

59

16.96

84.85

—

90.3

Marcasite

FeS2

4.87

-2.6

16.97

82.64

—

88.4

Pyrrhotite

Fe7S8

4.54

-2.6

65

111

20.55

93.30

—

94.2

Sphalerite

ZnS

3.93

-2.7

57

108

35.93

141

—

41

Chalopyrite

CuFeS 2

4.07

-2.3

26.72

109

—

101

Galena

PbS

6.39

-2.8

1631

10422

—

13.4

0.71

140

Phosphates


8

Section 2

Temperature and Fluids

Estimation of Formation Temperature

English 0

2500

5000

7500 Geothermal gradient 10,000 ) t f ( h t p e D

12,500

15,000 Gradient ˚F/100 ft

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

17,500

20,000 80 Mean Surface Temperature, T ms

60 40

100

150

100

200

150 100

250

200 150

300

250 200

350

300 250

400

350 300

450

400 350

450 400

450

Formation Temperature, T f (˚F) Example : Given the following conditions: formation temperature = 220˚F, mean surface temperature = 60˚F, total well depth = 13,500 ft.

What is the geothermal gradient and formation temperature at 10,000 ft? Enter y-axis at 13,500 ft, draw horizontal line. Enter the x-axis at 220˚F (T ms = 60) and draw a vertical line and intersect the horizontal line at 1.2 (deg/100 ft). Follow the 1.2 (Deg) per 100 ft geothermal gradient line to 10,000 ft and draw a vertical line down to intersect at 180˚F.


10

Estimation of Formation Temperature

Metric

0

1000

2000

3000 ) m ( h t p e D

Geothermal gradient

4000

5000

1.0

Gradient ˚C/100 m

1.25

1.5

1.75

2.0

2.25

2.5

2.75

3.0

3.25

6000

7000 25 Mean Surface Temperature, T ms

15 5

50

75

50

25 25

100

75 50

125

100 75

150

125 100

175

150 125

175 150

Formation Temperature, T f (˚C)


11

200

225

200 175

250

225 200

250 225

250

Resistivity vs. Temperature - NaCl Solutions

English

0.005 500

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

100

2

5

10

20

50

100

200

100

50 5 0 ˚ F

) m p p k ( n o i t a r t n e c n o C l C a N

(˚F)

1 0 0 1 5 0

20

2 5 0 3 5 0

10

5

7 5 1 2 5

2 0 0 3 0 0 4 0 0

2

1

.5

.2

.1 0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

Resistivity (ohm-m)

Example: Resistivity of a water sample is 0.4 ohm-m at 100˚F. What is the resistivity at 200˚F?

Enter the chart at 0.4 ohm-m resistivity; follow the line upwards to intersect 100˚F. The intersection yields 12,000 ppm salinity. Move horizontally to 200˚F and move down from the intersection to read 0.2 ohmn at 200˚F.

Rw2 = Rw1

(

T1 + 6.77 T2 + 6.77

)

; ˚F


12

Resistivity vs. Temperature - NaCl Solutions

Metric

0.005 500

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

100

5

10

20

50

100

200

100

50 1 0 ˚ C 3 5

20 ) m p p k ( n o i t a r t n e c n o C l C a N

7 2 5 5 1 2 5 5 0 1 7 1 5 0 0 1 5 0 2 0 0

10

5

(˚C)

2

1

.5

.2

.1 0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

2

Resistivity (ohm-m)

Rw2 = Rw1


13

(

T1 + 21.5 T2 + 21.5

)

; ˚C

Resistivity of Equivalent NaCl Solutions

Temperature (˚F)

(˚C)

Resistivity ohm-m

500

260

20

240

Equivalent NaCl co ncentrati o n

220 400

200

( )( kppm

180

250

)

8 6 5

0.2

160 300

10

gr /gal @ 24˚C or 75˚F

0.3 140

0.4 0.6

120

0.8 1

20

4

30 40 50

3 2

100 200

90

2

80

3 4

70 150

6 60

8 10

100 1 200

0.8

300

0.6 0.5

400 500

0.4 0.3

50 20 100

40

30 40

90

60 80 100

30 80 70

200 300

20

1000 0.2 2000 3000 4000 5000

0.1 0.08 0.06 0.05

10, 000 13, 000 14, 500

0.04

60

50

0.03 0.02

10

0.01 English: Rw2 = Rw1

(

T1 + 6.77

(

T1 + 21.5

T2 + 6.77

)

; ˚F

)

; ˚C

Metri c:

Rw2 = Rw1

T2 + 21.5

Example: Given: Temperature = 280˚F and NaCl co ncentrati o n = 80 ,000 ppm. Determine: Resistivity

R = 0.026 ohm-m


14

Estimation of Rmf and Rme

Rmf or R mc (ohm-m) 5

4 3

5

Rm ( ohm-m) 6 5

1

4 3 2

Mud weight (l b/gal ) (kg/m 3) 16 -18 15 14

0 .5

19 20 -21 60 1680

1

13

1560

0. 5

12

1440

11

1320

10

1200

0 .2

0. 1

0 .1

Mud Weight lb/gal

kg/m3

C

10 11 12 12 14 16 18

1200 1320 1440 1 560 1680 1920 2160

0.84 7 0.708 0.584 0.488 0.412 0.380 0. 35 0

0. 05 0 .0 5

0.01 0 .02

R mf = C(R m) 1.07

R mc = 0.69 R mf

2 . 65

( ) Rm

0 .01

R mf

Example G i ven:

R m = 0 .6 ohm-m at 180 ˚F mud

Mud weight = 12 .5 lb/gal D ete r mi ne:

Rmf and Rmc Rmf = 0.31 ohm-m at 180 ˚F Rmc = 1.23 ohm-m at 180˚F (fr om e quation )


15

Note: This char t may be used when the measured values of Rmf and Rmc are not available, but does not apply to lignosulf onate muds.

Section 3

Spontaneous Potential

SP Bed Thickness Correction

30

SP from log

20

120

SSP 20

110

30

100

40

90

50

9 8 7

6

5 60

80

15

SP correction factor 70

) t f ( h , s 10 s e 9 n k c i h 8 T d e 7 B

60

4

70

1 .0 1 .1 1 .2 1 .3 1 .4 1 .5

50

80

3.5

90

3

100

2.5

2 .0

40

2 .5 3 .0 3 .0 4 .0 5 .0 6 .0

30 20

6

110 2

120

5

) m ( h , s s e n k c i h T d e B

1.5

Rt Rm

4

=5

20

50

100

200 1

3 1.0

1.2

1.5

2.0

2.5

3.0

4.0

5.0

6.0

7.0

8.0

9.0

10.0

SP Correction Factor

Given: SP(log) = -40 mV, h = 7 ft, Rt = 16 ohm-m, Rm = 0.8 ohm-m Solution: Bed thickness = 7 ft, R /R t m = 20, SP correction factor = 1.3 Nomograph: SP(log) = -40 mV, SP correction factor = 1.3; SSP = -52 mV


18

Rwe Determination From Static SP

English Formation Temperature ˚F 0

50

100

150

200

250

300

100 350 400 50

450

20

10

5 e

w

R /

e f m

R

2

1

0.5

0.2

0.1 100

80

60

40

20

0

-20

-40

-60

-80

-100

-120

-140

-160

-180

-200

Static SP (mV)

SP = -70.7

Given: SSP = -80 mV, T f = 150˚F, Rmf = 0.6 ohm-m Determine: Rwe (Note - If Rmf > 0.1 @ 77˚F (25˚C) use R mfe = 0.85 Rmf Solution: Rmfe /Rwe = 10.0, Rwe = 0.06 ohm-m


19

(

460 + ˚F 537

)

log

Rmfe Rwe

Rwe Determination From Static SP

Metric

Formation Temperature ˚C

100

0

25

50

75

100 125

150 175 200 225

50

20

10

5

e

w

R /

e f m

R

2

1

0.5

0.2

0.1 100

80

60

40

20

0

-20

-40

-60

-80

-100

-120

-140

-160

-180

-200

Static SP (mV)

SP = -70.7

(

273 + ˚C 298

)

log

Rmfe Rwe


20

Rw vs. Rwe

English

R we (ohm-m) 0.001

0.002

0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

100

100

100

F 50

0 0 0 0 0 0 0 0 0 0 0 5 0 5 0 7 5 4 3 2 2 1 1

50

20

20

10

10

5

5

2

2

1

1

) m - 0.5 m h o (

0.5

w 0.2

0.2

0.1

0.1

R

0.05

F

R

w

( o h m -m )

0.05

70

100 150

0.02

0.02

200 250 0.01 300 400 500

0.01

0.005

0.005

0.002

0.002

0.001

0.001

0. 00 1 0. 002

0 .0 05

0 .01

0 .0 2

0. 05

0 .1

0.2

0.5

R we (ohm-m) Given: Rwe = 0.02 ohm-m, Tf = 150F Determine Rw; Rw = 0.03 ohm-m @ 150F


21

1

2

5

10

20

50

100

Rw vs. Rwe

Metric

R we (ohm-m) 0.001 0.002 100

0.005 0.01

0.02

0.05

0.1

0.2

0.5

C 50

) m m h o (

1

2

5

10

20

50

0 0 0 0 0 5 0 0 5 0 5 2 9 6 4 2 2 2 1 1

100 100 50

20

20

10

10

5

5

2

2

1

1

0.5

0.5

0.2

0.2

0.1

0.1

w

R

0.05

C

R

w

( o h m -m )

0.05

20

40

0.02

0.02

65 90

0.01

120 150 200

0.01

250

0.005

0.005

0.002

0.002

0.001 0.001 0.002

0.005 0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

0.001 100

R we (ohm-m)


22

Section 4

Natural Radioactivity

Gamma Ray Borehole Correction Chart for Borehole Size and Mud Weight

English 10

centered 5

a l l b / g 6 1 M u d

2 g o l

R G / r r o c

g a l 8 .3 l b / W a t e r 1

Air

R G 0.5

0.2

0.1 0

2

4

6

8

10

12

14

16

12

14

16

Borehole Diameter (in.)

10

eccentered

5

2 g o l

R G / r r o c

l b / g a l M u d 1 6 3 l b /ga l Wa ter 8.

1

Air

R G 0.5

0.2

0.1 0

2

4

6

8

10



24

Gamma Ray Borehole Correction Chart for Borehole Size and Mud Weight

Metric 10

centered 5

3

k g / m 9 2 0 1 d M u 3 g / m 1 0 0 0 k r e t a W

2 g o l

R G / r r o c

1

Air

R G 0.5

0.2

0.1 0

50

100

150

200

250

300

350

400

350

400

Borehole Diameter (mm)

10

eccentered

5

2 3 2 0 k g / m M u d 1 9

g o l

R G / r r o c

3

kg /m Wa ter 1000

1

Air

R G 0.5

0.2

0.1 0

50

100

150

200

250



25

300

Spectral Gamma Ray Response Borehole Size and Mud Weight Correction

English 9.0

centered

8.0

7.0

6.0 g o 5.0 l

Mud weight (lb/gal)

R G /

18

r r o 4.0 c

16

R G

14

3.0

12

2.0

10 water

1.0

0.0 0

5

10

15

20

Borehole Diameter (in.) 2.0

eccentered 1.8

Mud weight (lb/gal)

18

1.6

16

g o l

R G /

14

r r 1.4 o c

12

R G

10 water

1.2

1.0

0.8 0

5

10

15

20



26

Spectral Gamma Ray Response Borehole Size and Mud Weight Correction

Metric 9.0

centered

8.0

7.0

6.0 g o l

R 5.0 G /

Mud weight (g/cm3)

r r o c

2.2 2.0

R 4.0 G

1.8

3.0

1.6 1.4

2.0

1.2 water

1.0

0.0 0

100

200

300

400

500


eccentered 1.8

Mud weight (g/cm3)

2.2 2.0

1.6

1.8

g o l

R G / 1.4 r r

1.6 1.4

o c

R G

1.2 water

1.2

1.0

0.8 0

100

200

300



27

400

500

Spectral Gamma Ray Potassium Response Borehole Size and Mud Weight Correction

English 9. 0

centered

8. 0

7. 0

6. 0

g 5. 0 o l

K /

r r o 4. 0 c

Mud weight (lb/gal)

K

18 16

3. 0

14 12

2. 0

10 water

1. 0

0. 0 0

5

10

15

20

Borehole Diameter (in.) 2. 0

eccentered 1. 8

Mud weight (lb/gal)

1. 6

18 16

g o l

14

K / 1. 4 r r o c

12

K

10 water

1. 2

1. 0

0. 8 0

5

10

15

20



28

Spectral Gamma Ray Potassium Response Borehole Size and Mud Weight Correction

Metric 9.0

centered

8.0

7.0

6.0

g 5.0 o l

K /

r r o 4.0 c

Mud weight (g/cm3)

K

2.2 2.0 1.8

3.0

1.6 1.4 1.2

2.0

water

1.0

0.0 0

100

200

300

400

500

Borehole Diameter (mm) 2.0

eccentered 1.8

Mud weight (g/cm3)

1.6

2.2 2.0 1.8

g o l

K / 1.4 r

1.6

r o c

1.4

K

1.2 water

1.2

1.0

0.0 0

100

200

300



29

400

500

Spectral Gamma Ray Uranium Response Borehole Size and Mud Weight Correction

English 9. 0

centered

8. 0

7. 0

6. 0

g o l 5. 0

Mud weight (lb/gal)

18

U /

r r o c

U

16

4. 0 14

3. 0

12 10

2. 0

water

1. 0

0. 0 0

5

10

15

20


eccentered 1.8

18

Mud weight (lb/gal) 1.6

16 14

g o l

U /

r r o c

12

1.4

10

U

water

1.2

1.0

0.8 0

5

10

15

20



30

Spectral Gamma Ray Uranium Response Borehole Size and Mud Weight Correction

Metric 9.0

centered

8.0

7.0

6.0

Mud weight (g/cm3) g 5.0 o l

2.2 2.0

U /

r r o 4.0 c

1.8

U

1.6

3.0

1.4 1.2

2.0

water

1.0

0.0 0

100

200

300

400

500

Borehole Diameter (mm) 2.0

eccentered 1.8

Mud weight (g/cm3) 1.6

2.2 2.0 1.8

g o l

U /

1.6

r r 1.4 o c

1.4

U

1.2 water

1.2

1.0

0.8 0

100

200

300



31

400

500

Spectral Gamma Ray Thorium Response Borehole Size and Mud Weight Correction

English 9.0

centered

8.0

7.0

6.0 g o l

h T /

5.0

r r o c

h T

Mud weight (lb/gal)

18

4.0

16 14

3.0

12 10

2.0

water

1.0

0.0 0

5

10

15

20


eccentered 1.8

Mud weight (lb/gal)

1.6

18 16

g o l

h T / 1.4 r r

14 12

o c

h T

10 water

1.2

1.0

0.8 0

5

10

15

20



32

Spectral Gamma Ray Thorium Response Borehole Size and Mud Weight Correction

Metric 9. 0

centered

8. 0

7. 0

6. 0 g o l

h T 5. 0 / r r o c

Mud weight (g/cm3)

h 4. 0 T

2.2 2.0 1.8

3. 0

1.6 1.4 1.2

2. 0

water

1. 0

0. 0 0

10 0

200

300

40 0

500

Borehole Diameter (mm) 2. 0

eccentered 1. 8

Mud weight (g/cm3) 1. 6

2.2 2.0 1.8

g o l

h T /

1.6

1. 4

1.4

r r o c

1.2

h T

water

1. 2

1. 0

0. 8 0

100

20 0

300



33

4 00

50 0

Spectral Gamma Ray Correction for KCl Mud

English 200

centered

175

% KCl in mud (by weight)

20%

) I P 150 A a m m a 125 G s s o r G ( 100 n o i t c e r r 75 o C d u M l C 50 K

18% 16% 14% 12% 10% 8% 6% 4%

25 2%

0 0

5

10

15

20

Borehole Diameter (in.) 150

eccentered 125

) I P A a m 100 m a G s s o r G ( 75 n o i t c e r r o C d 50 u M l C K

% KCl in mud (by weight) 20% 18% 16% 14% 12% 10% 8% 6%

25

4% 2%

0 0

5

10

15

20



34

Spectral Gamma Ray Correction for KCl Mud

Metric 200

centered

175


) I 150 P A a m m a 125 G s s o r G ( 100 n o i t c e r r o 75 C d u M l C 50 K

20% 18% 16% 14% 12% 10% 8% 6% 4%

25 2%

0 0

100

200

300

400

500

Borehole Diameter (mm) 150

eccentered 125

) I P A a m100 m a G s s o r G ( 75 n o i t c e r r o C 50 d u M l C K


20% 18% 16% 14% 12% 10% 8% 6%

25

4% 2%

0 0

100

200

300



35

400

500

Spectral Gamma Ray Potassium Response Correction for KCl Mud

English 10

centered

9

8 20 %

% KCl in mud (by weight) ) K % ( n o i t c e r r o C d u M l C K

7

18 % 16 %

6

14 %

5 12 %

4

10 %

3

8% 6%

2 4%

1

2%

0 0

5

10

15

20

Borehole Diameter (in.) 10 9

For KCI mud, begin by determining the borehole corrections (CGR) for hole size and mud weight from chart 4-5. Apply the correction for the influence of KCl in the borehole as: Kcorr = CGR (Klog - KCl) Where CGR = borehole size and mud weight correction (Kcorr / Klog from chart 4-5) KCl = KCl correction in percent

eccentered

8

7

) K % ( n 6 o i t c e r r 5 o C d u M 4 l C K


20% 18% 16% 14%

3

12% 10%

Note — No KCl correction is needed for the Spectral Gamma Ray uranium or thorium response.

2

8% 6%

1

4% 2%

0 0

5

10

15

20



36

Spectral Gamma Ray Potassium Response Correction for KCl Mud

Metric 10

centered

9

8

% KCl in mud (by weight) ) K % ( n o i t c e r r o C d u M l C K

7

20 % 18 % 16 %

6

14 %

5 12 %

4

10 %

3

8% 6%

2 4%

1

2%

0 0

100

200

300

400

500

Borehole Diameter (mm) 10

eccentered eccentered

9

8

For KCI mud, begin by determining the borehole corrections for hole size and mud weight from chart 4-6. Apply the correction for the influence of KCl in the borehole as: Kcorr = CGR (Klog - KCl) Where CGR = borehole size and mud weight correction (Kcorr / Klog from chart 4-6) KCl = KCl correction in percent

7 ) K % ( n 6 o i t c e r r 5 o C d u M 4 l C K


20 % 18 % 16 % 14 %

3

12 % 10 %

Note — No KCl correction is needed for the Spectral Gamma Ray uranium or thorium response.

2

8% 6%

1

4% 2%

0 0

100

200

300



37

400

500

Section 5

Resistivity

Guidelines for Choosing Induction Logs or Dual Laterologs

30 20

-m m m m h h o o .1 1 0 0 . = 0 = w w R R

m m h o 0 . 1 =

Induction tools

15

w

R

10 8.0 6.0 5.0

Generally, when R /R t m < 3000, induction devices are used.

4.0 3.0 w

R / f m

2.0

R

Above the solid line and to the right of appropriate R w values, select both logs.

1.5 1.0 0.5

Dual Laterolog tools

0.6 0.5 0.4 Generally, when R /R t m > 8000, Dual Laterolog tools are used.

0.3

0.2 0.15 35

30

25

20

15

10

5

0

Porosity (%)


40

Mudcake Correction for Micro Spherically Focused Log (MSFL)

100 90 80

) ) m m m m 2 ) 2 5 ( m 2 . ( m n i 9 n . 1 i 5 . ( 7 0 n 8 i 1 . 0 . 7 5 0 .

70 60 50 40 30

20

Mud cake thickness, hmc

c m

R / 10 r r o 9 c f s 8 m R 7

) m m 1 3 . ( i n 5 0 .

) m m 6 ( i n . 5 2 0 .

6 5 4

m . / m n i 0

3

2

1 1

2

3

4

5

6

7

8 9 10

20

30

40

50

Rmsf /Rmc

Given: Rmsf = 10 ohm-m, Rmc = 0.5 ohm-m at formation temperature, hmc = 0.25 in. Enter the x-axis at R msf /Rmc = 20 and draw a vertical line to intersect the hmc = 0.25 in. line. Proceed horizontally to read R msf corr /Rmc of 17.0 Rmsf corr = 17.0 x 0.5 = 8.5 ohm-m. Note - Reference condition is an 8-in. (200-mm) borehole.


41

60 70 80 90100

Rxo from Micro Spherically Focused Log

4.0

Mudcake thickness, hmc 3.0

) m m 5 2 ( . i n 1

c m

R /

o x

R

2.0

) m m 9 1 ( . n i 5 7 . 0

m ) 3 m 1 ( i n. 0 . 5 0.25 in. (6 mm)

1.0 1

2

3

4

5

10

20

30

40 50

100

Rmsf /Rmc


42

Borehole Correction for Spherically Focused Log (SFL) as part of the STI Tool Combination

1.6

Tool centered in borehole

1.5 Borehole diameter

1.4

16 in. (405 mm)

1.3

14 in. (355 mm) 1.2

12 in. (305 mm)

l f s

10 in. (255 mm)

1.1 R / r r o c l f s 1.0

8 in. (200 mm)

R

6 in. (150 mm)

0.9

0.8 0.7 0.2

1

10

100

1000

104

1000

10 4

Rsfl /Rm 1.6

1.5-in. (38-mm) standoff tool eccentered

1.5

1.4

Borehole diameter 16 in. (405 mm)

1.3

14 in. (355 mm)

l f s 1.2

12 in. (305 mm)

R / r r

o c l f 1.1 s

10 in. (255 mm)

R

8 in. (200 mm) 1.0

6 in. (150 mm)

0.9

0.8 0.7 0.2

1

10

100

Rsfl /Rm


43

Borehole Correction for Simultaneous Triple Induction (STI) Tool

–15 100 10

150

Hole Diameter (mm) 200 250 300 350 400

450

For very low mud restivities divide R m scale by 10 and multiply hole signal scale by 10.

500

–10

Deep no standoff

9 8 Medium no standoff

0 7

0 0 1 x 6 r o t c a F 5 l a c i r t e 4 m o e G e 3 l o h e r o 2 B

–5 0 5 . 0 2 .

Medium 1.5-in. (38-mm) standoff 0 1 .

5 .

0 5 10 15

3 .

20

2 . Deep 1.5-in. (38-mm) standoff

1

) - m h m o ( R m

25

B o r e h o l e S i g n a l ( m m h o -m )

30

5 0 .

35

1

40

0 Hole Signal =

–1 4

Hole Geometrical Factor Rm

6

8

10 12 14 Hole Diameter (in.)

16

18

45

20

Given: Hole diameter = 14.5 in., Standoff = 1.5 in., Rdeep = 20 ohm-m @ Tf , Rm = 0.35 ohm-m @ Tf Enter at the hole diameter of 14.5 in. and draw a vertical line up to the 1.5 in. standoff curve. Proceed horizontally to the right side of the chart and read the borehole geometrical factor x 1000. From this point draw a straight line through the Rm value of 0.35 ohm-m to intersect the nomograph at 5.8 mmho-m. Subtract this value for a measured conductivity corrected for borehole effects.


44

Simultaneous Triple Induction (STI) Bed Thickness Correction Medium Induction

Bed thickness 2–4 ft (0.6–1.2 m) Bed thickness = 2 ft (0.6 m) 50

20

0.5

Rs (ohm-m)

1

2

5

10 20 50

) 10 m m h o 5 ( r r o c m u i d e 2 m

R

1

0.5

0.2 0.2

0.5

1

2

5

10

20

50

Rmedium from log (ohm-m)

Bed thickness = 3 ft (0.9 m)


50

20

50

Rs (ohm-m)

0.5

1

2

5

10 20

50 20

) m - 10 m h o ( r 5 r o c m u i d e m 2

0.5

1

2

5 10

50

) m - 10 m h o ( r 5 r o c m u i d e m 2

R

R

1

1

0.5

0.5

0.2 0.2

Rs (ohm-m)

20

0.5

1

2

5

10

20

0.2 0.2

50


0.5

1

2

5

10

Rmedium from log (ohm-m) 5-6

© 2006–2007 Weatherford. All rights reserved.

45

20

50

Simultaneous Triple Induction (STI) Bed Thickness Correction Medium Induction

Bed thickness > 4 ft (1.2 m) Rs = 2 ohm-m Bed Thickness (m)

Rs = 1 ohm-m Bed Thickness (m) 0

1

2

3

4

5

6

7

8

0

200

1

2

3

4

5

6

7

8

200 50

100

100

60 50

50

40

40 50

) m m h o (

r r o c

m u i d e m

R

30

30

20

20

) m m h o (

15 10 8 6

10 5

r r o c

m u i d e m

4

2

2

1

1

R

0.5

0.5

20 15

20

10 8 6

10 5

4

2

2

1

1 0.5

0.5

0.3 0.2

0.3

0.2

0.2


0.1 0

4

8

12

16

20

24

0.2

R medium from log (ohm-m)

0.1 0

28

4

Bed Thickness (ft)

8


1

2

3

4

5

6

12

16

20

24


8

200

0

50

1

2

3

4

5

6

7

8

200

90 80 70 60 50 40

100

100 90 80 70 60 50 40 30

100 50

30

) m m h o (

r r o c m u i d e m

R

20

20 15

10

10 8 6

5

) m m h o (

r r o c m u i d e m

4

2

2

1

1

R

0.5

0.5

20

20 15

10

10 8 6

5

4

2

2

1

1 0.5

0.5

0.3 0.2 0.1 0

0.3

0.2

0.2

Rmedium from log (ohm-m) 4

8

12

16

20

28

Bed Thickness (ft)

24

0.1 0

28

Bed Thickness (ft)

0.2

R medium from log (ohm-m) 4

8

12

16

20

24

28

Bed Thickness (ft) 5-7 © 2006–2007 Weatherford. All rights reserved.

46

Simultaneous Triple Induction (STI) Bed Thickness Correction Deep Induction

Bed thickness 2–4 ft (0.6–1.2 m) Bed thickness = 2 ft (0.6 m) 50 Rs (ohm-m) 0.5

20

1

2

5

10

20

50

) 10 m m h o 5 ( r r o c p e e d

R

2

1

0.5

0.2 0.2

0.5

1

2

5

10

20

50

Rdeep from log (ohm-m)



50

20

50 Rs (ohm-m)

0.5

1

2

5

10

20

50 20

10

10

) m m 5 h o (

) m m 5 h o (

R

R

r r o c p 2 e e d

0.5

1

2

5

10

50

r r o c p 2 e e d

1

1

0.5

0.5

0.2 0.2

Rs (ohm-m)

20

0.5

1

2

5

10

20

0.2 0.2

50

Rdeep from log (ohm-m)

0.5

1

2

5

10

Rdeep from log (ohm-m) 5-8


47

20

50

Simultaneous Triple Induction (STI) Bed Thickness Correction Deep Induction

Bed thickness > 4 ft (1.2 m) Rs = 1 ohm-m Bed Thickness (m) 0

1

2

3

4

5

6


8

0

200

200

100

100

1

2

3

4

5

6

7

8

30 50

50

20

20 15

20 ) m m h o ( r r o c p e e d

R


10 8

10

6 5

4

2

2

1

1

0.5

R

0.5

15 10 8 6

10 5

4

2

2

1

1 0.5

0.5

0.3

0.3

0.2

0.2 0.1 0

0

4

1

8

12

16

20

24

0.2

0.2

R deep from log (ohm-m)

R deep from log (ohm-m)

0.1 0

28

4

8

12

16

20

Bed Thickness (ft)

Bed Thickness (ft)

Rs = 4 ohm-m Bed Thickness (m)

Rs = 10 ohm-m Bed Thickness (m)

2

3

4

5

6

7

8

0

200

1

2

3

4

5

6

24

7

8

200

80 70 60 50 40

50 100

100

40

50

50

30

28


R

20

20

15

) m m h o ( r r o c p e e d

10 8 6

10 5

4

2

2

1

1

R

0.5

0.5

20

20 15

10

10 8 6

5

4

2

2

1

1 0.5

0.5

0.3

0.1 0

0.3

0.2

0.2

R deep from log (ohm-m) 4

8

12

16

20

24

0.2

0.2 0.1 0

28

Bed Thickness (ft)

R deep from log (ohm-m) 4

8

12

16

20

24

28

Bed Thickness (ft) 5-9 © 2006–2007 Weatherford. All rights reserved.

48

Rt and Rxo from Simultaneous Triple Induction (STI) – Spherically Focused Log (SFL)

Rxo /Rm = 20 40

30

) m c 5 7 ( . n i 0 3

20

10 9

Invasion diameter ) m ) c m 5 c 2 1 0 ( 0 . 1 n ( i . 0 n i 5 0 4 30

) m c 0 5 ) ( . m n c i 0 0 4 ( 2 . n i 5 1

) m c 0 5 1 ( . n i 0 6

) m c 0 8 1 ( . n i 0 7

) m c 5 0 2 ( . n i 0 8

) m c 0 3 2 ( . n i 0 9

20 .90

.80

.98

.70

7

) m c 0 1 4 ( . n i 0 6 1

.60

15

8 p e e d

) m c 5 0 3 ( . n i 0 2 1

25

.95

Rt Rdeep

Rxo Rt

di

.50 1.0 .40

R 6 / l f

10

s

R

5 Rxo /Rt

7

4 R /R t deep

5

3

Frequency = 20 kHz Thick beds 8-in. (200-mm) borehole

3

2

2

1 1

1.2

1.4

1.6 Rmedium /Rdeep 5-10


49

1.8

2

2.2

2.4

Rt and Rxo from Simultaneous Triple Induction (STI) – Spherically Focused Log (SFL)

Rxo /Rm = 100 40

30

Invasion diameter

) m c 5 7 ( . n i 0 3

20 ) m c 0 ) 5 ( m c . n 0 i 4 ( 0 . 2

10 9

p e e d

) m c 0 5 1 ( . n i 0 6

) m c 0 8 1 ( . n i 0 7

) m c 5 0 2 ( . n i 0 8

30

) m c 0 3 2 ( . n i 0 9

) m c 5 0 3 ( . n i 0 2 1

) m c 0 1 4 ( . n i 0 6 1

25

20

n i 5 1

8

) m c 5 2 1 ( . n i 0 5

) m c 0 0 1 ( . n i 0 4

Rt Rdeep

Rxo Rt

di

.95

.80

.90

.70

.98

.60

15 1.0

.50

7 10

R 6 / l f s

R

5 Rxo /Rt

7

4 R /R t deep

5

3

Frequency = 20 kHz Thick beds Rxo /Rm = 100 8-in. (200-mm) Borehole

3

2 2

1 1

1.2

1.4

1.6 Rmedium /Rdeep

1.8

2

2.2

2.4


50

Borehole Correction for Dual Laterolog (DLL)

Borehole correction to R LLd 1.4

1.3

centered

1.2

Hole diameter 14 in. (355 mm)

16 in. (405 mm)

d L L

12 in. (305 mm)

1.1

R / r

10 in. (255 mm) 8 in. (200 mm)

r o 1.0 c d L L

R

6 in. (150 mm)

0.9

0.8

0.7

0.6 1

10

100

1000

10 4

1000

104

RLLd /Rm Borehole correction to R LLs 1.8

centered

1.6

Hole diameter

1.4

16 in. (405 mm)

d L 1.2 L

14 in. (355 mm)

R / r

12 in. (305 mm)

r o c 1.0 d L L

10 in. (255 mm) 8 in. (200 mm) 6 in. (150 mm)

R

0.8

0.6

0.4 1

10

100

RLLd /Rm 5-12 © 2006–2007 Weatherford. All rights reserved.

51

Rt and Rxo from Dual Laterolog (DLL)

RLLd - R LLs - R xo 100

100

Invasion diameter

20 in.

30 in.

(0.5 m)

(0.75 m)

40 in. (1.0 m)

50 in. (1.25 m)

60 in. (1.5 m) 80 in. (2.0 m)

80 70 60

100 in. 50

40

(2.5 m) 120 in.

Rxo /R t

1.1

(3.0 m)

1.2

30

1.3

1.4 1.6

20

Rt /R LLd

20 15

1.8

10

10 8

7 6 5

o x

R / d L L

4

R

di

3

Rt /R LLd 2

Rxo /Rt

2 1.5

1

1

Thick beds 8-in. (200-mm) borehole No annulus No transition zone Use data corrected for borehole effects

0.8 0.6

(2.5 m) 100 in.

0.4

60 in. (1.5 m)

0.4

40 in. (1.0 m)

0.2 0.4

20 in. (0.5 m) 0.6

0.8

1

0.3

2

4

6

8

10

20

40

RLLd /R LLs


52

Section 6

Porosity and Lithology

Porosity Determination from Sonic Log

English 40

∆tf = 189 µs/ft

35

) ) n e t e o i t m e s o l m o i L D ( ( 6 5 . . 7 3 4 4 = = a a t m t m

30

∆

∆

) e n o t s d n a S ( 5 . 5 5 =

25

) % ( s φ , y t i s o r o P c i n o S

1 . 2 3 4 1 1 . 1 . 1 . = = = = P P P P C C C C

a

t m

∆

20

6 . 1 = P C

) ) e ) n e n e t o i t o t s m s d o e l n m o i a D L S ( ( ( 5 . 6 . 5 . 3 7 5 4 4 5 = = = a a a t m t m t m

∆

∆

∆

15

10

Wyllie time average 5

Raymer-Hunt-Gardner field transform

1 ∆t

0 40

50

60

70

80

90

100

=

110

(1-φ)2 ∆tma

+

120

φ ∆tf

130

140

Sonic Travel Time, ∆t (µs/ft) 6-1 © 2006–2007 Weatherford. All rights reserved.

54

Porosity Determination from Sonic Log

Metric 40

∆tf = 620 µs/m

35

) e ) t e o n i t s m e l o o i m L D ( ( 3 5 6 1 1 4 = = a a t m t m

30

∆

1 . 2 3 4 1 1 . 1 . 1 . = = = = P P P P C C C C

) e n o t s d n a S ( 2 8 1 =

25

) % ( s φ , y t i s o r o P c i n o S

∆

6 . 1 = P C

a

t m

) ) e ) n e n e o t i t o t s m s d l o m e n o i a S D ( L ( ( 3 6 2 4 5 8 1 1 1 = = =

∆

20

a

a

t m t m

∆

∆

a

t m

∆

15

10

Wyllie time average 5

Raymer-Hunt-Gardner field transform

1 ∆t

0 100

150

200

250

Sonic Travel Time, ∆t (µs/m) 6-2 © 2006–2007 Weatherford. All rights reserved.

55

300

=

(1-φ)2 ∆tma

+

φ ∆tf

350

400

Compensated Neutron Lithology Effect

40

35

30

25

) % ( y t i s o r o P e u r T

n e t o s n d S a 20

n e t o s e i m L t e i o m l D o

15

10

5

0 0

5

10

15

20

25

30

35

40

Apparent Porosity (%)


56

Compensated Neutron Standoff Correction

English 6-in. borehole 2.5 0.0 in. 0.5 in. 1.0 in. 1.5 in. 2.0 in.

2

1.5

) 1 . u . p ( n o i t 0. 5 c e r r o C

1.5 in.

0.0 in.

0

-0.5

0.5 in. 1.0 in.

2.0 in.

-1

-1.5 0

5

10

15

20

25

30

35

40

45

30

35

40

45

Apparent Limestone Porosity (p.u.)

8-in. borehole 4 0.0 in. 0.5 in. 1.0 in. 1.5 in. 2.0 in.

3

2 ) . u . p ( n o i t c e r r o C

1 0.0 in.

0

-1

-2 2.0 in. -3

-4 0

5

10

15

20

25



57


English 10-in. borehole 0 0.0 in. -1

-2 ) . u . p ( -3 n o i t c e r r o -4 C

2.0 in.

-5

0.0 in. 0.5 in. 1.0 in. 1.5 in. 2.0 in.

-6

-7 0

5

10

15

20

25

30

35

40

45


12-in. borehole 0 0.0 in. -1

-2

) . -3 u . p ( n o i t -4 c e r r o C

-5 2.0 in.

-6

0.0 in. 0.5 in. 1.0 in 1.5 in. 2.0 in.

-7

-8 0

5

10

15

20

25

30

35

40

45



58


English 14-in. borehole 0 0.0 in. -1 -2 -3 ) . u . -4 p ( n o i t -5 c e r r o C

-6 2.0 in. -7 0.0 in. 0.5 in. 1.0 in. 1.5 in. 2.0 in.

-8 -9 -10 0

5

10

15

20

25

30

35

40

45


16-in. borehole 0 0.0 in.

-2

-4 ) . u . p ( n o i t -6 c e r r o C

2.0 in.

-8 0.0 in. 0.5 in. 1.0 in. 1.5 in. 2.0 in.

-10

-12 0

5

10

15

20

25

30



59

35

40

45


Metric 150-mm borehole 2 0 mm 15 mm 25 mm 35 mm 45 mm

1.5

1 35 mm

) . u . p 0.5 ( n o i t c e r r o 0 C

0 mm

-0.5

15 mm 25 mm

-1

45 mm

-1.5 0

5

10

15

20

25

30

35

40

45

35

40

45


200-mm borehole 4 0 mm 15 mm 25 mm 35 mm 45 mm

3

2 ) . u . p ( n o i t c e r r o C

1 0 mm 0

-1

-2 45 mm -3

0

5

10

15

20

25

30



60


Metric 250-mm borehole 1

0 mm

0

-1 ) . u . p ( n o i t c e r r o C

-2

-3 0 mm 15 mm 25 mm 35 mm 45 mm

-4 45 mm

-5 0

5

10

15

20

25

30

35

40

45


300-mm borehole 0 0 mm

-1

-2 ) . u . p ( n o i t c e r r o C

-3

-4

-5

0 mm 15 mm 25 mm 35 mm 45 mm

45 mm

-6

-7 0

5

10

15

20

25



61

30

35

40

45


Metric 350-mm borehole 0 0 mm -1

-2

-3 ) . u . p -4 ( n o i t c e r r -5 o C

45 mm

-6

0 mm 15 mm 25 mm 35 mm 45 mm

-7

-8

-9 0

5

10

15

20

25

30

35

40

45


400-mm borehole 0 0 mm -1 -2 -3 ) . -4 u . p ( n o -5 i t c e r r o C -6

45 mm -7 0 mm 15 mm 25 mm 35 mm 45 mm

-8 -9 -10 0

5

10

15

20

25

30

35

40

45



62

Compensated Neutron Mud Weight Correction for Calcite Mud

English

12 8.345 lb/gal 10 lb/gal 12 lb/gal 14 lb/gal 16 lb/gal 18 lb/gal

10

8 ) . u . p ( n o i t c 6 e r r o C

18 lb/gal

4

2

0

8.345 lb/gal 0

5

10

15

20

25

30

35

40

45

35

40

45


Metric 7

1000 kg/m 3 1200 kg/m 3

6

1400 kg/m 3 1600 kg/m 3 1800 kg/m 3

5

2000 kg/m 3

) . 4 u . p ( n o i t c e r r 3 o C

2000 kg/m 3

2

1

1000 kg/m 3

0 0

5

10

15

20

25

30



63

Compensated Neutron Mud Weight Correction for Barite Mud

English 0.8 8.345 lb/gal 10 lb/gal 12 lb/gal 14 lb/gal 16 lb/gal 18 lb/gal

0.7

0.6

) . u . p ( n o i t c e r r o C

18 lb/gal

0.5

0.4

0.3

0.2

0.1 8.345 lb/gal 0 0

5

10

15

20

25

30

35

40

45


Metric 0.8 1000 kg/m 3 1200 kg/m 3

0.7

1400 kg/m 3 1600 kg/m 3

2000 kg/m 3

1800 kg/m 3

0.6

2000 kg/m 3

0.5 ) . u . p ( n 0.4 o i t c e r r o C 0.3

0.2

0.1 1000 kg/m 3 0 0

5

10

15

20

25

30

35

40

45



64

Compensated Neutron Mud Weight Correction for Hematite Mud

English 1

8.345 lb/gal 0

-1

) . u . p ( n -2 o i t c e r r o C -3

8.345 lb/gal 10 lb/gal 12 lb/gal 14 lb/gal 16 lb/gal 18 lb/gal

-4

18 lb/gal

-5 0

5

10

15

20

25

30

35

40

45


Metric

1000 kg/m 3 0

-1

) . u . p ( n o -2 i t c e r r o C

-3 1000 kg/m 3

2000 kg/m 3

1200 kg/m 3 1400 kg/m 3 1600 kg/m 3 1800 kg/m 3

-4

2000 kg/m 3

0

5

10

15

20

25



65

30

35

40

45

Compensated Neutron Mudcake Correction for Calcite Mud

English 2.5 0.00 in. 0.25 in. 0.50 in. 0.75 in. 1.00 in.

2

) . u . 1.5 p ( n o i t c e r r o C 1 1.00 in.

0.5

0.00 in.

0 0

5

10

15

20

25

30

35

40

45


Metric 2.5 0 mm 10 mm 15 mm 2

20 mm 25 mm

) . u . 1.5 p ( n o i t c e r r o C 1 25 mm

0.5

0 mm 0 0

5

10

15

20

25

30

35

40

45



66

Compensated Neutron Mudcake Correction for Barite Mud

English 0.45 0.00 in. 0.25 in. 0.50 in. 0.75 in. 1.00 in.

0.4

0.35

1.00 in.

0.3

) . u . p ( 0.25 n o i t c e r r 0.2 o C 0.15

0.1

0.05 0.00 in. 0 0

5

10

15

20

25

30

35

40

45


Metric 0.45 0 mm 0.4

10 mm 15 mm

25 mm

20 mm

0.35

25 mm 0.3

) . u . p 0.25 ( n o i t c e r r 0.2 o C 0.15

0.1

0.05 0 mm 0 0

5

10

15

20

25



67

30

35

40

45

Compensated Neutron Mudcake Correction for Hematite Mud

English 0

0.00 in.

-1

1.00 in. -2

) . u . p ( -3 n o i t c e r r o C -4

-5

0.00 in. 0.25 in. 0.50 in. 0.75 in. 1.00 in.

-6

-7 0

5

10

15

20

25

30

35

40

45

40

45


Metric 0 0 mm

-1

25 mm -2

) . u . -3 p ( n o i t c e r r -4 o C

-5 0 mm 10 mm -6

15 mm 20 mm 25 mm

-7 0

5

10

15

20

25

30

35


6-16 6-15 © 2006–2007 Weatherford. All rights reserved.

68

Compensated Neutron Formation Salinity Correction

Sandstone 0

0 kppm NaCl -.5

-1

) . u . p -1.5 ( n o i t c e r -2 r o C 0 kppm NaCl 50 kppm NaCl 100 kppm NaCl 150 kppm NaCl 200 kppm NaCl 250 kppm NaCl

-2.5

-3

250 kppm NaCl

-3.5

0

5

10

15

20

25

30

35

45


Limestone

Dolomite 0

0

0 kppm NaCl

0 kppm NaCl -.5

-.5

-1

-1

250 kppm NaCl

) . u . p ( -1.5 n o i t c -2 e r r o C

) . u . p -1.5 ( n o i t c e -2 r r o C

0 kppm NaCl 50 kppm NaCl 100 kppm NaCl 150 kppm NaCl 200 kppm NaCl 250 kppm NaCl

-2.5

-3

250 kppm NaCl


-2.5

-3

-3.5

-3.5

0

5

10

15

20

25

30

35

0

45

5

10

15

20

25




69

30

35

45

Compensated Neutron Formation Matrix Capture Cross Section Correction

Sandstone +2 + 0 c.u.

0

-2

) . u . p ( -4 n o i t c e r r -6 o C -8

+ 0 c.u.

+25 c.u.

+ 5 c.u. +10 c.u.

-10

+15 c.u. +20 c.u. +25 c.u.

-12

0

5

10

15

20

25

30

35

45


Limestone

Dolomite +2

+2

+ 0 c.u.

+ 0 c.u.

0

0

-2

-2

) . u . p ( -4 n o i t c -6 e r r o C

) . u . -4 p ( n o i t c -6 e r r o C

-8

+25 c.u.

-8

+ 0 c.u.

+ 0 c.u.

+25 c.u.

+ 5 c.u.

+ 5 c.u. +10 c.u.

-10

+10 c.u.

-10

+15 c.u.

+15 c.u. +20 c.u.

+20 c.u.

+25 c.u.

+25 c.u.

-12

-12

0

5

10

15

20

25

30

35

0

45

5

10

15

20

25

30

35

45




70

Compensated Neutron Temperature Correction

English 35

30

25

) . u . p 20 ( n o i t c e r r o C 15 75F 350F

100F 150F

10

200F 250F 300F 5

350F

0 0

5

10

15

20

25

30

35

40

45


Metric 30

25

20

) . u . p ( n o 15 i t c e r r o C

175C

25C 50C

10

75C 100C 125C 150C

5

175C

0 0

5

10

15

20

25

30



71

35

40

45

Compensated Neutron Pressure Correction

English 1 14.7 psi 0

-1

-2

-3

) . u . p ( -4 n o i t c e r r -5 o C -6

14.7 psi

25,000 psi

5000 psi -7

10,000 psi 15,000 psi 20,000 psi

-8

25,000 psi

-9 0

5

10

15

20

25

30

35

40

45


Metric 1 100 kPa

0

-1

-2

-3

) . u . p ( -4 n o i t c e r r -5 o C -6

100 kPa

175,000 kPa

35,000 kPa -7

70,000 kPa 105,000 kPa 140,000 kPa

-8

175,000 kPa

-9 0

5

10

15

20

25

30

35

40

45



72

Compensated Neutron Borehole Size and Salinity Correction

English 6-in. borehole 3.5

3 0 kppm NaCl 2.5 ) . u . p 2 ( n o i t c e r r o 1.5 C

1

250 kppm NaCl


0.5

0 0

5

10

15

20

25

30

35

40

45


8-in. borehole 0 0 kppm NaCl

-0.5

) . u . -1 p ( n o i t c e r r o -1.5 C

250 kppm NaCl

-2 0 kppm NaCl 50 kppm NaCl 100 kppm NaCl 150 kppm NaCl 200 kppm NaCl 250 kppm NaCl

-2.5

-3 0

5

10

15

20

25



73

30

35

40

45


English 10-in. borehole 0

-1 0 kppm NaCl -2 ) . u . p ( n o i t c -3 e r r o C

250 kppm NaCl


-5

-6 0

5

10

15

20

25

30

35

40

45

35

40

45


12-in. borehole 0

-1

-2 ) . u . p ( -3 n o i t c e r r o -4 C

0 kppm NaCl

-5

250 kppm NaCl 0 kppm NaCl 50 kppm NaCl 100 kppm NaCl 150 kppm NaCl 200 kppm NaCl 250 kppm NaCl

-6

-7

-8 0

5

10

15

20

25

30



74


English 14-in. borehole 0

-1

-2

-3

0 kppm NaCl

) . u . p ( -4 n o i t c e r r -5 o C

250 kppm NaCl -6 0 kppm NaCl 50 kppm NaCl 100 kppm NaCl 150 kppm NaCl 200 kppm NaCl 250 kppm NaCl

-7

-8

-9 0

5

10

15

20

25

30

35

40

45

35

40

45


16-in. borehole 0 -1 -2 -3 0 kppm NaCl

) . -4 u . p ( n o i t -5 c e r r o C -6

250 kppm NaCl

-7


-8 -9 -10 0

5

10

15

20

25



75

30


Metric 150-mm borehole 3.5

3

2.5

0 kppm NaCl

) . u . p 2 ( n o i t c e r r o C 1.5

250 kppm NaCl

1


0.5

0 0

5

10

15

20

25

30

35

40

45

35

40

45


200-mm borehole 0.5

0 kppm NaCl 0

-0.5

) . u . p ( n o i t c e r r o C

250 kppm NaCl

-1

-1.5


-2

-2.5

-3

0

5

10

15

20

25

30



76


Metric 250-mm borehole 0

-1

0 kppm NaCl

-2 ) . u . p ( n o i t c -3 e r r o C

250 kppm NaCl


-5

-6 0

5

10

15

20

25

30

35

40

45

30

35

40

45


300-mm borehole 0

-1

-2

0 kppm NaCl

) . u . -3 p ( n o i t c e r r o -4 C

250 kppm NaCl

-5


-6

-7 0

5

10

15

20

25



77

Compensated Neutron Boreh Borehole ole Size and Salinity Correction

Metric 350-mm borehole 0 -1 -2 -3 ) . u . p ( n o i t c e r r o C

0 kppm NaCl

-4 -5 -6

250 kppm NaCl 0 kppm NaCl 50 kppm NaCl 100 kppm NaCl 150 kppm NaCl 200 kppm NaCl 250 kppm NaCl

-7 -8 -9 0

5

10

15

20

25

30

35

40

45

35

40

45

Apparent Limestone Porosity (p.u.) y

400-mm borehole 0 -1 -2 -3 ) . u . p ( n o i t c e r r o C

0 kppm NaCl

-4 -5

250 kppm NaCl

-6 -7


-8 -9 -1 10 10 0

5

10

15

20

25

30



78

Porosity and Lithology from Compensated Neutron and Spectral Pe Density (SPeD) Log

Fresh mud system 45 1.9

45 45 40

ρf = 1.0 g/cm 3

2.0

40

Salt

A p p r o x i m a t e g a s c o r r e c t i o n

2.1

2.2

) m c / g (

3

b

ρ

, y t i s n e D k l u B

35 40

35

30

i t y o s r P o

35

25

n e t o s n d S a

20

2.3

30

25

30

e t o n e s m L i

15 2.4 10

20

2.5

20

25

15

t e i o m l D o

10

5 15 2.6 0

5 10

2.7

0 5 –5

2.8 0

–10

2.9

Anhydrite –15

3.0 –5

0

5

10

15

20

25

Neutron Porosity, φN (% Limestone)


79

30

35

40

45

) e n o t s e m i L % ( D

φ

, y t i s o r o P y t i s n e D

Porosity and Lithology from Compensated Neutron and Spectral Pe Density (SPeD) Log

Salt mud system 1.9

45

ρf = 1.1 g/cm 3

2.0

45

40

Salt 2.1

2.2

) 3 m c / g ( b ρ


35

30

i t y o s r P o

2.3

20

35

25

n e t o s n d S a

15

2.4

40

35

A p p r o x i m a t e g a s c o r r e c t i o n

25

30

e t o n e s m L i

20

25

20

15

5 15 2.6

) e n o t s e m i L % ( D φ

t e i o m l o D

10 2.5

30

10 15

0

5

, y t i s o r o P y t i s n e D

10 2.7

0 5 –5

2.8 0

–10 2.9

Anhydrite –15

3.0 –5

0

5

10

15

20

25

30

35

40

45



80

Porosity and Lithology from Compensated Neutron and Sonic Log

English 120

∆tf = 189 µs/ft 40

110 35

40

100 30

i t y o s r P o

90

35

25 30

20

) t 80 f / s µ ( t ∆ , e m 70 i T l e v a r T c 60 i n o S

) . 5 5 5 ( n e s t o d n S a

15

10

25

6 . ) 4 7 ( n e s t o e L i m 15

5

20

) 5 . 4 3 ( t e i m o l D o

10 0 5

50 0

40

30

20 –5

0

5

10

15

20

25



81

30

35

40

45

Porosity and Lithology from Compensated Neutron and Sonic Log

Metric 400

∆tf = 620 µs/m 40

350 35

40

30

300

25

i t y s r o o P

) m / s µ ( t ∆ , e m 250 i T l e v a r T c i n o S

35

30

20

) 2 1 8 ( e t o n d s n S a

15

25

) 6 1 5 ( e t o n s e L i m

10 15

20

) 3 1 4 ( t e i o m l D o

5

200

10 0 5

150

100 –5

0

0

5

10

15

20

25

30

35

40

45



82

Porosity and Lithology from Sonic and Spectral Pe Density (SPeD) Log

English Fresh water

Salt e n t o s d n a e S n o t 0 s 3 e m 0 i 3 L

ρ b = 1.0 g/cm3

2.1

∆tf = 189 µs/ft

2.2

5 2 2.3 0 2

5 2 t e i m l o o D 0 3

0 2 Gypsum

) 3 m c / g (

2.4

5 1 5 1

b ρ


0 1

2.5 0 1

0 2

y t i s o r o P

5 5 1

2.6

5 0 0 1

0

2.7

5 2.8

0 2.9 20

30

40

50

60

70

80

Sonic Travel Time, ∆t (µs/ft) 6-30 © 2006–2007 Weatherford. All rights reserved.

83

90

100

110

120

Porosity and Lithology from Sonic and Spectral Pe Density (SPeD) Log

Metric Fresh water

Sulfur

Salt 2100

n e o t s d n e a n S t o 0 e s 3 m i 0 L 3

ρ f = 1000 kg/m3, ∆tf = 620 µs/m

2200

5 2 2300

0 2

Gypsum

5 2 t e i m o l o D 0 3

0 2 2400

) 3 m / g k ( b

ρ


5 1

5 2

5 1 0 1

2500

0 1

0 2 y t i o s r o P

5 5 1

2600

5 0 0 1

0

2700

5 2800

0 2900

Anhydrite 3000 50

100

150

200

250

300

350

400

Sonic Travel Time, ∆t (µs/m) 6-31 © 2006–2007 Weatherford. All rights reserved.

84

Spectral Pe Density (SPeD) Photoelectric Correction for Borehole Size

Pe borehole size correction chart (for 0.1 < Ubhf < 10)

) . n i ( e z i S e l o h e r o B

22

550

20

500

18

450

16

400

14

350

12

300

10

250

8

200

6

150

4

100 0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

B o r e h o l e S i z e ( m m )

Standard condition

6.0

Photoelectric Factor, Pe (barns/electron)

Formation U borehole size correction chart (for 0.1 < Ubhf < 10)

) . n i ( e z i S e l o h e r o B

22

550

20

500

18

450

16

400

14

350

12

300

10

250

8

200

6

150

4

100

0

2

4

6

8

10

12

Volumetric Photoelectric Factor, U (barns/cm3)


85

14

16

B o r e h o l e S i z e ( m m )

Standard condition

Porosity and Lithology from Spectral Pe Density (SPeD) Log

Fresh mud, liquid filled holes 1.9 50

45 t l a S

5

40

2.0

40

45

0

35 2.1

35

40 30 2.2 25 2.3

y t i s o r o P

) 3 m 2.4 c / g (

25

e n o t s d n a S

20

, y 2.5 t i s n e D k l u B 2.6

e n o t s e m i L

30

15

b ρ

30

35

25

10

20

e t i m o l o D

15

20 10

5

15 5

0 10

2.7

0 5

2.8

10

0

e t i r d y h n A

5

2.9

0

3.0 0

1

2

3

4

5

6

Photoelectric Factor, Pe (barns/electron)


86

Apparent Matrix Volumetric Photoelectric Factor Spectral Pe Density (SPeD) Log

3.0

2.5

0 10

) 3 m c / g (

ρ

b

20

2.0

b

30

ρ


40

A p p a r e n t T o t a l P o r o s i t y φ

t ,

( % )

Umaa

Pe

6

5

4

3

Photoelectric Factor Pe, (barns/electron)

2

1

4

6

8

10

12

14

Apparent Matrix Volumetric Photoelectric Factor, Umaa (barns/cm3)


87

Matrix Identification Plot

18

Heavy minerals

16

)

3

m c / s n r a b (

Barite

Limestone 14

a a m

U , r o t c a F c i r t c e l e o t o h P c i r t e m u l o V t n e r a p p A

t e i m 4 0 l o o D 0 6 %

12

0 2 0 8

0 6

0 8

10 Dolomite

e n o t s e m i L %

Salt

0 4

2 0

8

Gas

% 4 0 S a n d 6 s t o 0 n e

6

0 2

8 0

Sandstone

4

2 3.1

3.0

3.0

2.8

2.7

2.6

2.5

2.4

2.3

2.2

3

Apparent Matrix Grain Density, ρmaa (g /cm )

(Pe

log

Umaa

xρ

=

) - (φ x Uf )

log

1-φ

ρlog - φρf ρma

a

=

1-φ

Where, φ

=

f ormation porosity

ρf 1.0 g /cm3 (f resh water) =

U

f

=

1.1 g /cm3 (salt water)

=

0.398 barns/cm3 (f resh water)

=

1.36 barns/cm3 (salt water)

The Matrix Identif ication Plot can be used to determine the component matrix litholo gy using the apparent matrix grain density and the apparent matrix volumetric photoelectric f actor.


88

Section 7

Pulsed Neutron

Determination of Sigma Gas

English

15 14 13 12 11 F ˚

10

) g Σ ( s a G a m g i S

F ˚ F 5 0 ˚ 0 1 0 1

9

F ˚ 0 2 0

F 4 0 0 ˚ F 3 5 0 ˚ F 0 ˚ 0 3 0 2 5

8 7 6 5 4 3 2 1 0 0

1

2

3

4

5

6

7

8

9

10

Reservoir Pressure (kpsi)


90

Determination of Sigma Gas

Metric

15 14 13 12 11 ˚ C

10 ˚ C 0 5

9

) g Σ ( s 8 a G a 7 m g i S

C ˚ 5 7

˚ C 0 1 0

0 0 C 7 5 ˚ C 2 ˚ C 5 ˚ 1 5 0 1 1 2

6 5 4 3 2 1 0 0

10

20

30

40

50

Reservoir Pressure (MPa)


91

60

70

Determination of Sigma Water

120

110

100

90

80

) w Σ 70 ( r e t a W 60 a m g i S 50

40

30

20

10

0 0

25

50

75

100

125

150

175

200

225

250

Equivalent NaCl Concentration (kppm)


92

Neutron Capture Cross Section of Wet Gas

15

12

Gas specific gravity = 0.4

) g Σ 9 ( s a G a m g i S

0. 5 0.6 0.7

6

0.8 0.9 1.0 1. 2 1.4

3 Specific gravity of air = 1.0

0 0

3

6

9

Sigma CH4


93

12

15

Correction of Sigma Gas for Condensate Content

25

20

f M c M / l b 0 b 0 = 3 0 0 t e 2 a n s e 0 n d 1 0 C o 4 0 1 0

) g 15 Σ ( s a G a m g i S 10

0

5

0 0

5

10

15

Sigma CH4


94

Section 8

Miscellaneous

Reservoir Permeability Estimate from Log Data – Morris and Biggs Equation

Permeability (md)

100

90

0.1

0.5

1

2

5

10

20

50

200

100

500

80

70

1000

60

) % ( r r 50 i S 2000 40

30 5000 20

10,000

10

0 0

5

10

15

20

25

30

35

40

45

50

Porosity, φ (%)


96

Reservoir Permeability Estimate from Log Data – Timur Equation

Permeability (md)

100

90

0. 1

0.5

1

2

5

10

50

20

100

200

80

70

60 500

) % ( r r 50 i S

40

1000

30

2000

20 5000 10,000

10

0 0

5

10

15

20

25

30

Porosity, φ (%)


97

35

40

45

50

Conductivity-Derived-Water-Filled-Porosity

1000

1

500

2

1 % 200

5

2 % P o r o s i t y

3 %

100

4 %

50

5 % 6 % 8 % % 1 0 % 1 2 % 1 5

20

) m m h 10 o ( a

R

10

20

50

% 2 0 % 2 5 % 3 0 5 % 3 0 % 4

100

5

200

2

500

1

1000

0.5

2000

0.2

5000

0.1

10,000 0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

) m o h m m ( C , y t i v i t c u d n o C

10

Rw (ohm-m)


98

Cement Bond Log Interpretation Chart

English

0 0 9 2

0 5 4 1 0 6 1 1 0 7 8

6

5

4

3

2

s g s n e ) . i n n s k a c i ( C i h t

0 5 8

0 9 2

) i s p ( h t g n e r t S e v i s s e r p m o C

5 4 1 6 1 1 7 8 n o i t f a t u / n b d e t t A

0

3

6

2 1

9

5 1

8 1

1 2 8 5 4 . 3 1 5 7 . 0 1

g n i c a p s t f 3

6 . 7 0 . 7 5 . 5

0 0 0 0 0 8 7 6 5 4

0 3

0 2

5 1

0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 1 9 8 7 6 5 4 3

0 . 5 . 2 1

mV


99

0 . 9 . 8 . 7 . 6 . 5 . 4 . 3 . 1 0 0 0 0 0 0 0

5 . 4

) . n i ( D O g n i s a C

Cement Bond Log Interpretation Chart

Metric

4

0 1 2

4

0 1 0 0 0 8 0 0 0 6

s

2 . 5 1

7 . 2 1

4 . 0 1

g s ) 1 n e . i n m 5 s a k m

0 0 0 4

c ( C i h t

6 . 7

0 0 0 2

0 0 0 1

) a P k ( h t g n e r t S e v i s s e r p m o C

0 0 8 0 0 6 n o i t a / m u b 0 n d e t t A

3

6

2 1

9

5 1

8 1

1 2

0 0 4 0 4 3 3 7 2

g n i c a p s m 2 9 . 0

4 9 8 1 7 1 0 4 1

0 0 0 0 0 8 7 6 5 4

0 3

0 2

5 1

0 . 0 . 0 . 0 . 0 . 0 . 0 . 0 . 1 9 8 7 6 5 4 3

0 . 5 . 2 1

0 . 9 . 8 . 7 . 6 . 5 . 4 . 3 . 1 0 0 0 0 0 0 0

4 1 1

) m m ( D O g n i s a C

mV


100

Formation Strength Parameter Equations Used in Well Logging Terms

Log-derived values of density, shear travel time and compressional travel time can be mathematically related to Young’s modulus, Bulk modulus, Shear modulus and Poisson’s ratio.

Definition of Elastic Constants

Elastic constants

Elastic constants 9K

ρ v2 s

9K

Young’s modulus(1)

E=

Bulk modulus(2)

2 2 K = ρvc - 4 /3vs

Shear modulus(3)

Poisson’s ratio(4)

E=

3K + ρ v2 s

σ = 1 /2

µ

= 2µ (1 + σ) = 3K (1 - 2σ)

3K + µ Eµ

K=

=µ

3(3µ - E)

2(1

µ=

( ) ( ) v2 s v2 c

1 - 2σ

= 3K 9K x

2

E

+ σ)

3(1 - 2σ) E

=

+ 2σ

E=

2

+ 2σ

K=ρ

µ=

ρ

3∆t2 - 4∆t2

∆t2s

∆t2s - ∆t2 c

( )(

E

=

3(1 - 2σ)

3KE

2 µ = ρvs

v2 c

Equations in well logging terms

Interrelation of equations

( ρ

s

c

3∆t2 - 4∆t2 s

c

2

2

3∆t ∆t s

x

∆t2s

c

)

x

)

x

−1

3K - 2µ 2(3K

+ µ)

=

(

E -1 2µ

)

3K - E

=

6K

σ = 1 /2

10

1.34 x 10

(

∆t2s -

2∆t2 c

∆t2s - ∆t2 c

)

2

vs

ρ = bulk density, g /cm3

vc = compressional velocity, ft /s

vs = shear velocity, ft /s

∆t c = compressional travel time, µs /ft 10

∆t s = shear travel time, µs /ft

1.34 x 10

= conversion f actor

(1) Young’s modulus (E) measures opposition of a substance to extensional stress,

F /A E =

∆1 /1

(2) Bulk modulus (K) is the coefficient of incompressibility and measures opposition of substance

to compressional stress, K =

F /A

∆v /v

(3) Shear modulus (µ), also called rigidity modulus, measures the opposition of a substance to shear stresses.

Finite values f or solids, zero values f or f luid,

µ =

F /A tan S

(4) Poisson’s ratio (σ) is the ratio of relative decrease in diameter to relative elongation, σ =


101

∆d /d ∆1 /1

10

1.34 x 10

−2 σ=

10

1.34 x 10

Formation Strength Parameters

5 14

) i s p

13 12

4

11

6

0 1 x (

10 9

3

µ

, s u l u d o M r a e h S

8 7 2

6 5 4 3

1

) i s p

6

0 1 x ( E , s u l u d o M s ’ g n u o Y

2 1

0 0

0.1

0.2

0.3

0.4

0.5

Poisson’s Ratio, σ

5

) i s p

4

6

0 1 x (

µ

, s u l u d o M r a e h S

3

2

2

1

B u lk m o d u lu s , 1 K 0 ( x 1 5 0 6 p s i )

1

0 0

0.1

0.2

0.3

0.4

0.5

Poisson’s Ratio, σ


102

Formation Strength Parameters

Shear Modulus, µ (x 106 psi) 10

5

2.5

2.0

1.5

1.0

3.0

)

3

m c / g (

2.0

b

ρ ,

y t i

s

n

e

D

1.0 40

50

100

150

200

Shear Transit Time, ∆ts (µsec/f t) ) t f

0.0

140

0.1

/ c e s

0.2

µ ( c

σ

t ∆ , e

m i

,

0.3

a

100

R

T

s

’

t i

n

s

n

a r

0.4

T

i

P

n o i s s e r

0.45

p

o

o s s o

l a

m

o i t

50

C

40

50

100

150

Shear Transit Time, ∆ts (µsec/f t)


103

200

Mineral Identification from Spectral Gamma Ray

20 s l a r e n i m g n i r a e b m u i r o h t y v a e H

16 m p p h T , n o 12 i t a r t n e c n o C 3 m u i r o h T

2 1 = K / h T

8 2 = K / h T

Kaolinite

3. 5 = K h / T

l a y s c r e l a y d e x M i

= 2 T h / K

e l l l i t

t e i t c e m S

4

40% Mica line 80% Glauconite line

s M i c a o n i t e G l a u c

Feldspar

Th/K = 0.5

Potassium evaporites 0 0

1

2

3

4

Potassium Concentration, K%


104

Shale Volume from Radioactivity Index

1.0

0.9

0.8

0.7

)

h s

V ( e m u l o V e l a h S

0.6

0.5

0.4

Clavier, et. al. Larionov (older rocks)

Stieber

0.3

Larionov (tertiary rocks) 0.2

0.1 0.0 0.0

0.1

0.2

0.3

0.4

0.5

Radioactivity Index


105

0.6

0.7

0.8

0.9

1.0

Tool Mnemonics

Mnemonic

Mnemonic Description

Tool

Tool Description

DT

Compressional Delta Time

BCS

Borehole Comp Sonic

DTL

Delta Time Lower

BCS

Borehole Comp Sonic

DTQ

Delta Time Quality

BCS

Borehole Comp Sonic

DTU

Delta Time Upper

BCS

Borehole Comp Sonic

ITT

Integrated TRL Time

BCS

Borehole Comp Sonic

RCDP

RH Cmpr DOL Phi

BCS

Borehole Comp Sonic

RCLP

RH Cmpr LS Phi

BCS

Borehole Comp Sonic

RCSP

RH Cmpr SS Phi

BCS

Borehole Comp Sonic

RPUR

BCS USER RH Porosity

BCS

Borehole Comp Sonic

SA1

Amplitude T1

BCS

Borehole Comp Sonic

SA2

Amplitude T2

BCS

Borehole Comp Sonic

SA3

Amplitude T3

BCS

Borehole Comp Sonic

SA4

Amplitude T4

BCS

Borehole Comp Sonic

SPDL

BCS Porosity (DL)

BCS

Borehole Comp Sonic

SPHI

BCS Porosity (LS)

BCS

Borehole Comp Sonic

SPSS

BCS Porosity (SS)

BCS

Borehole Comp Sonic

TT1

Travel Time T1

BCS

Borehole Comp Sonic

TT2

Travel Time T2

BCS

Borehole Comp Sonic

TT3

Travel Time T3

BCS

Borehole Comp Sonic

TT4

Travel Time T4

BCS

Borehole Comp Sonic

UPHS

BCS USER Porosity

BCS

Borehole Comp Sonic

XY 1

XY Signature T1

BCS

Borehole Comp Sonic

XY 2

XY Signature T2

BCS

Borehole Comp Sonic

XY 3

XY Signature T3

BCS

Borehole Comp Sonic

XY 4

XY Signature T4

BCS

Borehole Comp Sonic

ABHC

Annular Volume Tick

BHV

Borehole Volume Analysis

ABHT

Annular Volume Tab

BHV


ABHV

Annular Volume

BHV


BHV

Total Borehole Volume

BHV


BHVC

Borehole Volume Tick

BHV


BHVT

Borehole Volume Tabular

BHV


DCAL

Differential Caliper

BHV


NOMI

Nominal ID

CAI

Casing Analysis Instrument

NOMO

Nominal OD

CAI


NOMW

Nominal Wall

CAI


MINR

Min Remaining Wall

CAI


MAXR

Max Remaining Wall

CAI


DIFR

Wall Difference

CAI


PERR

% Remaining Wall

CAI


MNWT

Min Wall Thickness

CAI



106

Tool Mnemonics

Mnemonic


Tool

Tool Description

MXWT

Max Wall Thickness

CAI


DFWT

Wall Thickness Differential

CAI


PCWT

% Wall Thickness Remaining

CAI


APII

API Tolerance ID

CAI


APIW

API Tolerance Wall

CAI


TOLW

12.5% Tolerance Wall

CAI


TOLR

87.5% Wall Remaining

CAI


BPNO

Nom Burst Pressure

CAI


BPMX

Max Burst Pressure

CAI


BPMN

Min Burst Pressure

CAI


BPGU

Gulf Burst Pressure

CAI


CPNO

Nom Collapse Pressure

CAI


CPMX

Max Collapse Pressure

CAI


CPMN

Min Collapse Pressure

CAI


PIPD

Pipe Defect

CAI


CCLF

Collar

CAI


ODMN

Minimum OD

CAI


ODMX

Maximum OD

CAI


ODAV

Average OD

CAI


CAL3

Aux Caliper

CAL

Caliper

CALI

X Caliper

CAL

X Caliper

CAL2

Y Caliper

CAL

Y Caliper

DT


CBL

Cement Bond

TT3F

Travel Time 3 ft

CBL

Cement Bond

TT5F

Travel Time 5 ft

CBL

Cement Bond

VDL1

Variable Density 3 ft

CBL

Cement Bond

VDL2


CBL

Cement Bond

XY1

XY Signature 3 ft

CBL

Cement Bond

XY2

XY Signature 5 ft

CBL

Cement Bond

AM3F

Amplitude 3 ft

CBL

Cement Bond

AM5F

Amplitude 5 ft

CBL

Cement Bond

ATTN

Attenuation

CBL

Cement Bond

BI

Bond Index

CBL

Cement Bond

CS

Compressive Strength

CBL

Cement Bond

AM3F

Amplitude 3 ft

CBL

Single Receiver Cement Bond

ATTN

Attenuation

CBL


BI

Bond Index

CBL


CS


CBL


TT3F

Travel Time 3 ft

CBL


VDL1


CBL



107

Tool Mnemonics

Mnemonic


Tool

Tool Description

XY1

XY Signature 3 ft

CBL


CCL

Collar Locator

CCL

Casing Collar Locator (100)

SFB

Collar Locator

CCL

Multiple Gun Select Fire

SFG

Collar Locator

CCL

Select Fire Gun

CGN

Collar Locator

CCL

Shooting CCL

SWJ

Collar Locator

CCL

Swing Jet

DPDL

Density Porosity (DL)

CDT

Compensated Density

DPHI

Density Porosity (LS)

CDT

Compensated Density

DPSS

Density Porosity (SS)

CDT

Compensated Density

DRHO

Density Correction

CDT

Compensated Density

FFDC

Density Long Space

CDT

Compensated Density

NFDC

Density Short Space

CDT

Compensated Density

RHOB

Bulk Density

CDT

Compensated Density

AVGP

Avg Pad

CES

Casing Evaluation Survey

AVGT

Avg Thickness

CES


ERRB

CTSB Errors

CES


MAXP

Max Pad

CES


MAXT

Max Thickness

CES


MINP

Min Pad

CES


MINT

Min Thickness

CES


PD1

Pad #1

CES


PD2

Pad #2

CES


PD3

Pad #3

CES


PD4

Pad #4

CES


PD5

Pad #5

CES


PD6

Pad #6

CES


PD7

Pad #7

CES


PD8

Pad #8

CES


PD9

Pad #9

CES


PD10

Pad #10

CES


PD11

Pad #11

CES


PD12

Pad #12

CES


PD13

Pad #13

CES


PD14

Pad #14

CES


PD15

Pad #15

CES


PD16

Pad #16

CES


PR1

Raw pad #1 counts

CES


PR2

Raw pad #2 counts

CES


PR3

Raw pad #3 counts

CES


PR4

Raw pad #4 counts

CES



108

Tool Mnemonics

Mnemonic


Tool

Tool Description

PR5

Raw pad #5 counts

CES


PR6

Raw pad #6 counts

CES


PR7

Raw pad #7 counts

CES


PR8

Raw pad #8 counts

CES


PR9

Raw pad #9 counts

CES


PR10

Raw pad #10 counts

CES


PR11

Raw pad #11 counts

CES


PR12

Raw pad #12 counts

CES


PR13

Raw pad #13 counts

CES


PR14

Raw pad #14 counts

CES


PR15

Raw pad #15 counts

CES


PR16

Raw pad #16 counts

CES


TRTX

Thickness Baseline

CES


FCNL

Neutron LS CPS

CNT

Compensated Neutron

NCNL

Neutron SS CPS

CNT

Compensated Neutron

NDBC

Neutron Porosity HS Cor.(DL)

CNT

Compensated Neutron

NLBC

Neutron Porosity HS Cor.(LS)

CNT

Compensated Neutron

NPDL

Neutron Porosity (DL)

CNT

Compensated Neutron

NPHI

Neutron Porosity (LS)

CNT

Compensated Neutron

NPSS

Neutron Porosity (SS)

CNT

Compensated Neutron

NRAT

Ratio

CNT

Compensated Neutron

NRAW

Raw Neutron Porosity

CNT

Compensated Neutron

NSBC

Neutron Porosity HS Cor.(SS)

CNT

Compensated Neutron

RFCN

Neutron Raw LS CPS

CNT

Compensated Neutron

RNCN

Neutron Raw SS CPS

CNT

Compensated Neutron

LHRO

Linear Porosity

GNT

Single Det Neutron

NAPI

Neutron

GNT

Single Det Neutron

CPGD

Compress. Goodness

DAR

Digital Acoustic Tool

CPSL

Compress. Slowness

DAR


DT1

Delta Time 1

DAR


DT2

Delta Time 2

DAR


DT3

Delta Time 3

DAR


DT4

Delta Time 4

DAR


DT5

Delta Time 5

DAR


DT6

Delta Time 6

DAR


DT7

Delta Time 7

DAR


GM

Shear Modulus

DAR


GN1

R1 Gain

DAR


GN2

R2 Gain

DAR


GN3

R3 Gain

DAR



109

Tool Mnemonics

Mnemonic


Tool

Tool Description

GN4

R4 Gain

DAR


GN5

R5 Gain

DAR


GN6

R6 Gain

DAR


GN7

R7 Gain

DAR


GN8

R8 Gain

DAR


ITTC

Cmpr Intgr TT

DAR


ITTS

Shear Intrg TT

DAR


KM

Bulk Modulus

DAR


MPWR

Monopole Power

DAR


MSGD

Shear Goodness

DAR


MSHS

Shear Slowness

DAR


MSTT

Micro Sonic TT

DAR


PHSE

Phase

DAR


PRAT

Poisson’s Ratio

DAR


RCDP

RH Cmpr DOL Phi

DAR


RCLP

RH Cmpr LS Phi

DAR


RCSP

RH Cmpr SS Phi

DAR


RCUP

RH Cmpr USR Phi

DAR


RSDP

RH Shear DOL Phi

DAR


RSLP

RH Shear LS Phi

DAR


RSSP

RH Shear SS Phi

DAR


RSUP

RH Shear USR Phi

DAR


SRAT

Slowness Ratio

DAR


STGD

Stoneley Goodness

DAR


STSL

Stoneley Slowness

DAR


TEMP

Temperature

DAR


TM1

R1 Delta T

DAR


TM2

R2 Delta T

DAR


TM3

R3 Delta T

DAR


TM4

R4 Delta T

DAR


TM5

R5 Delta T

DAR


TM6

R6 Delta T

DAR


TM7

R7 Delta T

DAR


TM8

R8 Delta T

DAR


VOLT

Head Voltage

DAR


WCDP

Wyllie Cmpr DOL Phi

DAR


WCLP

Wyllie Cmpr LS Phi

DAR


WCSP

Wyllie Cmpr SS Phi

DAR


WCUP

Wyllie Cmpr USR Phi

DAR


WF1

R1 LIS Waveform

DAR



110

Tool Mnemonics

Mnemonic


Tool

Tool Description

WF2

R2 LIS Waveform

DAR


WF3

R3 LIS Waveform

DAR


WF4

R4 LIS Waveform

DAR


WF5

R5 LIS Waveform

DAR


WF6

R6 LIS Waveform

DAR


WF7

R7 LIS Waveform

DAR


WF8

R8 LIS Waveform

DAR


XTR1

Extra 1

DAR


XTR2

Extra 2

DAR


XTR3

Extra 3

DAR


XY1

R1 Signature

DAR


XY2

R2 Signature

DAR


XY3

R3 Signature

DAR


XY4

R4 Signature

DAR


XY5

R5 Signature

DAR


XY6

R6 Signature

DAR


XY7

R7 Signature

DAR


XY8

R8 Signature

DAR


YMEM

Young’s Modulus

DAR


280D

280 Hz Gen DAC

DLL

Dual Laterolog

35DC

35 Hz Gen DAC

DLL

Dual Laterolog

35DF

35 Hz Gen Delta Frequency

DLL

Dual Laterolog

35DP

35 Hz Gen Delta Phase

DLL

Dual Laterolog

35GC

35 Hz Gen Current

DLL

Dual Laterolog

35GV

35 Hz Gen Voltage

DLL

Dual Laterolog

35IP

35 Hz Gen Current Phase

DLL

Dual Laterolog

35VP

35 Hz Gen Volt Phase

DLL

Dual Laterolog

CLLD

Deep Conductivity

DLL

Dual Laterolog

CLLS

Shallow Conductivity

DLL

Dual Laterolog

DPER

LLd Phase Error

DLL

Dual Laterolog

ID00

Deep Current 0

DLL

Dual Laterolog

ID90

Deep Current 90

DLL

Dual Laterolog

ILLD

Deep Current

DLL

Dual Laterolog

ILLS

Shallow Current

DLL

Dual Laterolog

IS00

Shallow Current 0

DLL

Dual Laterolog

IS90

Shallow Current 90

DLL

Dual Laterolog

LDRW

Deep Restistivity Raw

DLL

Dual Laterolog

LSRW

Shallow Restistivity Raw

DLL

Dual Laterolog

PEVT

Pit Electrode Volt

DLL

Dual Laterolog

PHER

LLs Phase Error

DLL

Dual Laterolog


111

Tool Mnemonics

Mnemonic


Tool

Tool Description

PWRD

Deep Power

DLL

Dual Laterolog

PWRS

Shallow Power

DLL

Dual Laterolog

RDPI

LLd Resistivity I

DLL

Dual Laterolog

RLLD

Deep Resistivity

DLL

Dual Laterolog

RLLS

Shallow Resistivity

DLL

Dual Laterolog

VD00

Deep Voltage 0

DLL

Dual Laterolog

VD90

Deep Voltage 90

DLL

Dual Laterolog

VLLD

Deep Voltage

DLL

Dual Laterolog

VLLS

Shallow Voltage

DLL

Dual Laterolog

VS00

Shallow Voltage 0

DLL

Dual Laterolog

VS90

Shallow Voltage 90

DLL

Dual Laterolog

DL10

Deep Resistivity X 10

DLL

Dual Laterolog

SL10

Shallow Resistivity X 10

DLL

Dual Laterolog

TEN2

Tension Compression

DTD

Tension Compression

AZI1

Pad1 Azimuth

FED

Four Electrode Dipmeter

AZIM

Hole Azimuth

FED


B

Total H Field

FED


HDEV

Hole Deviation

FED


PEC

PEC

FED


RB

Rotation

FED


TOTG

Total G Field

FED


ZACC

Z Acceleration

FED


GR

Gamma Ray

GR

Gamma Ray

A1

T1R1 3’ Amplitude

HBC

High Resolution Borehole Sonic

A2

T1R2 3’10 Amplitude

HBC


A3


HBC


A4

T1R4 5’ Amplitude

HBC


A5

T2R1 5’ Amplitude

HBC


A6


HBC


A7


HBC


A8

T2R4 3’ Amplitude

HBC


Attn

Attenuation

HBC


BI

Bond Index

HBC


CNT1

T1R1 3’ Counter

HBC


CNT2

T1R2 3’10 Counter

HBC


CNT3

T1R3 4’2 Counter

HBC


CNT4

T1R4 5’ Counter

HBC


CNT5

T2R1 5’ Counter

HBC


CNT6

T2R2 4’2 Counter

HBC


CNT7

T2R3 3’10 Counter

HBC



112

Tool Mnemonics

Mnemonic


Tool

Tool Description

CNT8

T2R4 3’ Counter

HBC


CS


HBC


DT


HBC


DTL

Lower Delta T Uncompensated

HBC


DTLM

Lower Micro DT Uncompensated

HBC


DTM

Min Delta T

HBC


DTQ

Delta T Quality

HBC


DTU

Upper Delta T Uncompensated

HBC


DTUM

Upper Micro DT Uncompensated

HBC


DTX

Max Delta T

HBC


GN1

T1R1 3’ Gain

HBC


GN2

T1R2 3’10 Gain

HBC


GN3

T1R3 4’2 Gain

HBC


GN4

T1R4 5’ Gain

HBC


GN5

T2R1 5’ Gain

HBC


GN6

T2R2 4’2 Gain

HBC


GN7

T2R3 3’10 Gain

HBC


GN8

T2R4 3’ Gain

HBC


ITT

Integrated TRL Time

HBC


MDT

Micro Delta T

HBC


MDTM

Min Micro Delta T

HBC


MDTQ

Micro Delta T Quality

HBC


MDTX

Max Micro Delta T

HBC


MITT

Micro ITT

HBC


NOI1

T1R1 3’ Noise

HBC


NOI2

T1R2 3’10 Noise

HBC


NOI3

T1R3 4’2 Noise

HBC


NOI4

T1R4 5’ Noise

HBC


NOI5

T2R1 5’ Noise

HBC


NOI6

T2R2 4’2 Noise

HBC


NOI7

T2R3 3’10 Noise

HBC


NOI8

T2R4 3’ Noise

HBC


RCDP

Sonic Phi (DL-RH)

HBC


RCLPI

Sonic Phi (LS-RH)

HBC


RCSP

Sonic Phi (SS-RH)

HBC


RCUP

Sonic USR RH Phi

HBC


SPDL

Sonic Phi (DL)

HBC


SPHI

Sonic Phi (LS)

HBC


SPSS

Sonic Phi (SS)

HBC


T1MN

T1R1 3’ TT Min

HBC



113

Tool Mnemonics

Mnemonic


Tool

Tool Description

T1MX

T1R1 3’ TT Max

HBC


TEMP

Temperature

HBC


THR1

T1R1 3’ Threshold

HBC


THR2

T1R2 3’10 Threshold

HBC


THR3


HBC


THR4

T1R4 5’ Threshold

HBC


THR5

T2R1 5’ Threshold

HBC


THR6


HBC


THR7


HBC


THR8

T2R4 3’ Threshold

HBC


TM1

T1R1 3’ TT

HBC


TM2

T1R2 3’10 TT

HBC


TM3

T1R3 4’2 TT

HBC


TM4

T1R4 5’ TT

HBC


TM5

T2R1 5’ TT

HBC


TM6

T2R2 4’2 TT

HBC


TM7

T2R3 3’10 TT

HBC


TM8

T2R4 3’ TT

HBC


TMX2

T1R2 3’10 TT Min

HBC


TMX2

T1R2 3’10 TT Max

HBC


TMX3

T1R3 4’2 TT Max

HBC


TMX3

T1R3 4’2 TT Min

HBC


TMX4

T1R4 5’ TT Min

HBC


TMX4

T1R4 5’ TT Max

HBC


TMX5

T2R1 5’ TT Max

HBC


TMX5

T2R1 5’ TT Min

HBC


TMX6

T2R2 4’2 TT Max

HBC


TMX6

T2R2 4’2 TT Min

HBC


TMX7

T2R3 3’10 TT Max

HBC


TMX7

T2R3 3’10 TT Min

HBC


TMX8

T2R4 3’ TT Min

HBC


TMX8

T2R4 3’ TT Max

HBC


UPHS

Sonic USR Phi

HBC


VOLT

Head Voltage

HBC


XY1

T1R1 3’ XY Sig

HBC


XY2

T1R2 3’10 XY Sig

HBC


XY3

T1R3 4’2 XY Sig

HBC


XY4

T1R4 5’ XY Sig

HBC


XY5

T2R1 5’ XY Sig

HBC


XY6

T2R2 4’2 XY Sig

HBC



114

Tool Mnemonics

Mnemonic


Tool

Tool Description

XY7

T2R3 3’10 XY Sig

HBC


XY8

T2R4 3’ XY Sig

HBC


DDTD

Delta Compression

HBC

Tension Compression

DXTM

Z Acceleration Time

HMI

High Resolution Micro Imager

GDV

GDV Primary

HMI


GI

Guard Current

HMI


GIQ

PADV Quadr.

HMI


GTOT

Total G Field

HMI


GX

X Axis Accelerometer

HMI


GY

Y Axis Accelerometer

HMI


GZ

Z Axis Accelerometer

HMI


HAZI

Tool Azimuth

HMI


IMG1

Buttons

HMI


LVDT

LVDT Drive

HMI


MOTI

Motor Current

HMI


MOTV

Motor Voltage

HMI


MTF

Magnetic Tool Face

HMI


NTEM

Navigation Temp

HMI


P0MN

PAD 1 Minimum

HMI


P0MX

PAD 1 Maximum

HMI


P1B7

P1B7 Fast

HMI


P1MN

PAD 2 Minimum

HMI


P1MX

PAD 2 Maximum

HMI


P1R

P1R Resistivity

HMI


P2B7

P2B7 Fast

HMI


P2MN

PAD 3 Minimum

HMI


P2MX

PAD 3 Maximum

HMI


P2R

P2R Resistivity

HMI


P3B7

P3B7 Fast

HMI


P3MN

PAD 4 Minimum

HMI


P3MX

PAD 4 Maximum

HMI


P3R

P3R Resistivity

HMI


P4B7

P4B7 Fast

HMI


P4MN

PAD 5 Minimum

HMI


P4MX

PAD 5 Maximum

HMI


P4R

P4R Resistivity

HMI


P5B7

P5B7 Fast

HMI


P5MN

PAD 6 Minimum

HMI


P5MX

PAD 6 Maximum

HMI


P5R

P5R Resistivity

HMI



115

Tool Mnemonics

Mnemonic


Tool

Tool Description

P6B7

P6B7 Fast

HMI


P6R

P6R Resistivity

HMI


PAD1

PAD1 Packed

HMI


PAD2

PAD2 Packed

HMI


PAD3

PAD3 Packed

HMI


PAD4

PAD4 Packed

HMI


PAD5

PAD5 Packed

HMI


PAD6

PAD6 Packed

HMI


PADV

PADV in Phase

HMI


PP

Pad Presser

HMI


RAD1

Radius Pad 1

HMI


RAD2

Radius Pad 2

HMI


RAD3

Radius Pad 3

HMI


RAD4

Radius Pad 4

HMI


RAD5

Radius Pad 5

HMI


RAD6

Radius Pad 6

HMI


RB

Relative Bearing

HMI


RHOA

Rho Average

HMI


SQ

Seq Count

HMI


UAZI

Pad1 Azi No MDEC

HMI


UHAZ

Tool Azi No MDEC

HMI


V5

5 V Rail

HMI


VI

Valve Current

HMI


VREF

Gen DAC VRef

HMI


VRG

14 V Rail

HMI


VRGN

14 V Rail Neg

HMI


XTR1

Extra 1

HMI


XTR2

Extra 2

HMI


XTR3

Extra 3

HMI


XTR4

Extra 4

HMI


ZAC5

Z Acc 0.02 in.

HMI


ZACC

Z Acceleration Fast

HMI


ZNOW

Z Acceleration Now

HMI


ZREF

Gen DAC Zero Ref

HMI


AZI1

Pad1 Azimuth

HMI


B1

Button 1 Measurement

HMI


B2


HMI


B3


HMI


B4


HMI


B5


HMI



116

Tool Mnemonics

Mnemonic


Tool

Tool Description

B6


HMI


B7


HMI


B8


HMI


B9


HMI


B10


HMI


B11


HMI


B12


HMI


B13


HMI


B14


HMI


B15


HMI


B16


HMI


B17


HMI


B18


HMI


B19


HMI


B20


HMI


B21


HMI


B22


HMI


B23


HMI


B24


HMI


B25


HMI


BTOT

Total Magnetic Field

HMI


BX

X Axis Magnetometer

HMI


BY

Y Axis Magnetometer

HMI


BZ

Z Axis Magnetometer

HMI


C14

Diameter 1-4

HMI


C25

Diameter 2-5

HMI


C36

Diameter 3-6

HMI


CTEM

Cartridge Temperature

HMI


DEVI

Tool Deviation

HMI


DMAX

Max Diameter

HMI


DMIN

Min Diameter

HMI


DMP1

DM PAD1 Packed

HMI


DMP2

DM PAD2 Packed

HMI


DMP3

DM PAD3 Packed

HMI


DMP4

DM PAD4 Packed

HMI


DMP5

DM PAD5 Packed

HMI


DMP6

DM PAD6 Packed

HMI


CILD

Deep IEL Conductivity

IEL

Induction Electric Log

RILD

Deep IEL Resistivity

IEL


SN

Short Normal

IEL



117

Tool Mnemonics

Mnemonic


Tool

Tool Description

ADTH

Actual Depth

LSP

Line Speed

LS

Line Speed

LSP

Line Speed

RSTM

Relative System Time

LSP

Line Speed

SPMA

Sorensen Current

LSP

Line Speed

SPVT

Sorensen Voltage

LSP

Line Speed

MAXI

Max ID

MAC

Multi-Arm Caliper

MINI

Min ID

MAC

Multi-Arm Caliper

EDOL

Epithermal Porosity (DO)

MAN

Multi Array Neutron

EFCN

Epithermal Far CPS

MAN

Multi Array Neutron

EFRC

Epithermal Far Raw CPS

MAN

Multi Array Neutron

ELIM

Epithermal Porosity (LS)

MAN

Multi Array Neutron

ENCN

Epithermal Near CPS

MAN

Multi Array Neutron

ENRC

Epithermal Near Raw CPS

MAN

Multi Array Neutron

EPHI

Epithermal Porosity

MAN

Multi Array Neutron

ERAT

Epithermal Ratio

MAN

Multi Array Neutron

ESAN

Epithermal Porosity (SS)

MAN

Multi Array Neutron

GR

Gamma Ray

MAN

Multi Array Neutron

TDOL

Thermal Porosity (DO)

MAN

Multi Array Neutron

TFCN

Thermal Far CPS

MAN

Multi Array Neutron

TFRC

Thermal Far Raw CPS

MAN

Multi Array Neutron

TLIM

Thermal Porosity (LS)

MAN

Multi Array Neutron

TNCN

Thermal Near CPS

MAN

Multi Array Neutron

TNRC

Thermal Near Raw CPS

MAN

Multi Array Neutron

TPHI

Thermal Porosity

MAN

Multi Array Neutron

TRAT

Thermal Ratio

MAN

Multi Array Neutron

TSAN

Thermal Porosity (SS)

MAN

Multi Array Neutron

ADCZ

ADC Zero

MCC

MAN Tool Communication Cart

HDV

Head Voltage

MCC


TEMP

Temperature

MCC


CPGD

Compress. Goodness

MDA

Monopole Dipole Acoustic

CPSL

Compress. Slowness

MDA


DPWR

Dipole Power

MDA


DSHG

Shear Goodness (D)

MDA


DSHS

Shear Slowness (D)

MDA


DT1

DT1

MDA


DT2

DT2

MDA


DT3

DT3

MDA


DT4

DT4

MDA


DT5

DT5

MDA


DT6

DT6

MDA



118

Tool Mnemonics

Mnemonic


Tool

Tool Description

DT7

DT7

MDA


GD

Shear Modulus (D)

MDA


GM

Shear Modulus (M)

MDA


GN1

R1 Gain

MDA


GN2

R2 Gain

MDA


GN3

R3 Gain

MDA


GN4

R4 Gain

MDA


GN5

R5 Gain

MDA


GN6

R6 Gain

MDA


GN7

R7 Gain

MDA


GN8

R8 Gain

MDA


GX

Shear Modulus (X)

MDA


ITSD

Shear Integrated TT (D)

MDA


ITSM

Shear Integrated TT (M)

MDA


ITSX

Shear Integrated TT (X)

MDA


ITTC

Cmpr Integrated TT

MDA


KD

Bulk Modulus (D)

MDA


KM

Bulk Modulus (M)

MDA


KX

Bulk Modulus (X)

MDA


MPWR

Monopole Power

MDA


MSGD

Shear Goodness (M)

MDA


MSHS

Shear Slowness (M)

MDA


MSTT

Micro Sonic TT

MDA


PHSE

Phase

MDA


PRTD

Poisson’s Ratio (D)

MDA


PRTM

Poisson’s Ratio (M)

MDA


PRTX

Poisson’s Ratio (X)

MDA


RCDP

RH Cmpr DOL Phi

MDA


RCLP

RH Cmpr LS Phi (M)

MDA


RCSP

RH Cmpr SS Phi

MDA


RCUP

RH Cmpr USR Phi

MDA


RSDD

RH Shear DOL Phi (D)

MDA


RSDM

RH Shear DOL Phi (M)

MDA


RSDX

RH Shear DOL Phi (X)

MDA


RSLD

RH Shear LS Phi (D)

MDA


RSLM

RH Shear LS Phi (M)

MDA


RSLX

RH Shear LS Phi (X)

MDA


RSSD

RH Shear SS Phi (D)

MDA


RSSM

RH Shear SS Phi (M)

MDA


RSSX

RH Shear SS Phi (X)

MDA



119

Tool Mnemonics

Mnemonic


Tool

Tool Description

RSUD

RH Shear USR Phi (D)

MDA


RSUM

RH Shear USR Phi (M)

MDA


RSUX

RH Shear USR Phi (X)

MDA


SRAT

Slowness Ratio (M)

MDA


SRTD

Slowness Ratio (D)

MDA


SRTX

Slowness Ratio (X)

MDA


STGD

Stoneley Goodness

MDA


STSL

Stoneley Slowness

MDA


TEMP

Temperature

MDA


TM1

R1 Delta T

MDA


TM2

R2 Delta T

MDA


TM3

R3 Delta T

MDA


TM4

R4 Delta T

MDA


TM5

R5 Delta T

MDA


TM6

R6 Delta T

MDA


TM7

R7 Delta T

MDA


TM8

R8 Delta T

MDA


VOLT

Head Voltage

MDA


WCDP

Wyllie Cmpr DOL Phi

MDA


WCLP

Wyllie Cmpr LS Phi

MDA


WCSP

Wyllie Cmpr SS Phi

MDA


WCUP

Wyllie Cmpr USR Phi

MDA


WF1

R1 LIS Waveform

MDA


WF2

R2 LIS Waveform

MDA


WF3

R3 LIS Waveform

MDA


WF4

R4 LIS Waveform

MDA


WF5

R5 LIS Waveform

MDA


WF6

R6 LIS Waveform

MDA


WF7

R7 LIS Waveform

MDA


WF8

R8 LIS Waveform

MDA


XSHG

Shear Goodness (X)

MDA


XSHS

Shear Slowness (X)

MDA


XTR1

Extra 1

MDA


XTR2

Extra 2

MDA


XTR3

Extra 3

MDA


XY1

R1 Signature

MDA


XY2

R2 Signature

MDA


XY3

R3 Signature

MDA


XY4

R4 Signature

MDA


XY5

R5 Signature

MDA



120

Tool Mnemonics

Mnemonic


Tool

Tool Description

XY6

R6 Signature

MDA


XY7

R7 Signature

MDA


XY8

R8 Signature

MDA


YMED

Young’s Modulus (D)

MDA


YMEM

Young’s Modulus (M)

MDA


YMEX

Young’s Modulus (X)

MDA


HDV

Head Voltage

MEL

Micro Electric Log

MEL1

1.5 Resistivity

MEL

Micro Electric Log

MEL2

2 Resistivity

MEL

Micro Electric Log

MELI

MEL-I (STD)

MEL

Micro Electric Log

MV15

MEL-V 1.5 (STD)

MEL

Micro Electric Log

MV2

MEL-V 2 (STD)

MEL

Micro Electric Log

TEMP

Temperature

MEL

Micro Electric Log

ZERO

ADC Offset

MEL

Micro Electric Log

MOTX

Magnetic Orientation

MOT

Magnetic Orientation Tool

AVRD

Avg Radius

MSC

Multi Sensor Caliper

BERR

Transmission Errors

MSC


DEVI

Deviation

MSC


DIAV

Avg Diameter

MSC


DIMN

Min Diameter

MSC


DIMX

Max Diameter

MSC


DMNA

Min Diameter Arm

MSC


DMXA

Max Diameter Arm

MSC


ECCE

Eccentering

MSC


ETMP

External Temperature

MSC


GRAY

Gray Map

MSC


GSCL

Gray Scale

MSC


HIGH

High Arm

MSC


HREF

Temperature High Ref

MSC


ID1

Raw Arm Data

MSC


ID2

Arm # 2

MSC


ID3

Arm # 3

MSC


ID4

Arm # 4

MSC


ID5

Arm # 5

MSC


ID6

Arm # 6

MSC


ID7

Arm # 7

MSC


ID8

Arm # 8

MSC


ID9

Arm # 9

MSC


ID10

Arm # 10

MSC


ID11

Arm # 11

MSC



121

Tool Mnemonics

Mnemonic


Tool

Tool Description

ID12

Arm # 12

MSC


ID13

Arm # 13

MSC


ID14

Arm # 14

MSC


ID15

Arm # 15

MSC


ID16

Arm # 16

MSC


ID17

Arm # 17

MSC


ID18

Arm # 18

MSC


ID19

Arm # 19

MSC


ID20

Arm # 20

MSC


ID21

Arm # 21

MSC


ID22

Arm # 22

MSC


ID23

Arm # 23

MSC


ID24

Arm # 24

MSC


ID25

Arm # 25

MSC


ID26

Arm # 26

MSC


ID27

Arm # 27

MSC


ID28

Arm # 28

MSC


ID29

Arm # 29

MSC


ID30

Arm # 30

MSC


ID31

Arm # 31

MSC


ID32

Arm # 32

MSC


ID33

Arm # 33

MSC


ID34

Arm # 34

MSC


ID35

Arm # 35

MSC


ID36

Arm # 36

MSC


ID37

Arm # 37

MSC


ID38

Arm # 38

MSC


ID39

Arm # 39

MSC


ID40

Arm # 40

MSC


ID41

Arm # 41

MSC


ID42

Arm # 42

MSC


ID43

Arm # 43

MSC


ID44

Arm # 44

MSC


ID45

Arm # 45

MSC


ID46

Arm # 46

MSC


ID47

Arm # 47

MSC


ID48

Arm # 48

MSC


ID49

Arm # 49

MSC


ID50

Arm # 50

MSC


ID51

Arm # 51

MSC



122

Tool Mnemonics

Mnemonic


Tool

Tool Description

ID52

Arm # 52

MSC


ID53

Arm # 53

MSC


ID54

Arm # 54

MSC


ID55

Arm # 55

MSC


ID56

Arm # 56

MSC


ID57

Arm # 57

MSC


ID58

Arm # 58

MSC


ID59

Arm # 59

MSC


ID60

Arm # 60

MSC


ID61

Arm # 61

MSC


ID62

Arm # 62

MSC


ID63

Arm # 63

MSC


ID64

Arm # 64

MSC


ID65

Arm # 65

MSC


ID66

Arm # 66

MSC


ID67

Arm # 67

MSC


ID68

Arm # 68

MSC


ID69

Arm # 69

MSC


ID70

Arm # 70

MSC


ID71

Arm # 71

MSC


ID72

Arm # 72

MSC


ID73

Arm # 73

MSC


ID74

Arm # 74

MSC


ID75

Arm # 75

MSC


ID76

Arm # 76

MSC


ID77

Arm # 77

MSC


ID78

Arm # 78

MSC


ID79

Arm # 79

MSC


ID80

Arm # 80

MSC


IDAV

Avg ID

MSC


IDMN

Min ID

MSC


IDMX

Max ID

MSC


ITMP

Internal Temperature

MSC


LDIA

Largest Diameter

MSC


LREF

Temperature Low Ref

MSC


MNRD

Min Radius

MSC


MXRD

Max Radius

MSC


OVAL

Ovality

MSC


R01

Radius 1

MSC


R02

Radius 2

MSC



123

Tool Mnemonics

Mnemonic


Tool

Tool Description

R03

Radius 3

MSC


R04

Radius 4

MSC


R05

Radius 5

MSC


R06

Radius 6

MSC


R07

Radius 7

MSC


R08

Radius 8

MSC


R09

Radius 9

MSC


R10

Radius 10

MSC


R11

Radius 11

MSC


R12

Radius 12

MSC


R13

Radius 13

MSC


R14

Radius 14

MSC


R15

Radius 15

MSC


R16

Radius 16

MSC


R17

Radius 17

MSC


R18

Radius 18

MSC


R19

Radius 19

MSC


R20

Radius 20

MSC


R21

Radius 21

MSC


R22

Radius 22

MSC


R23

Radius 23

MSC


R24

Radius 24

MSC


R25

Radius 25

MSC


R26

Radius 26

MSC


R27

Radius 27

MSC


R28

Radius 28

MSC


R29

Radius 29

MSC


R30

Radius 30

MSC


R31

Radius 31

MSC


R32

Radius 32

MSC


R33

Radius 33

MSC


R34

Radius 34

MSC


R35

Radius 35

MSC


R36

Radius 36

MSC


R37

Radius 37

MSC


R38

Radius 38

MSC


R39

Radius 39

MSC


R40

Radius 40

MSC


R41

Radius 41

MSC


R42

Radius 42

MSC



124

Tool Mnemonics

Mnemonic


Tool

Tool Description

R43

Radius 43

MSC


R44

Radius 44

MSC


R45

Radius 45

MSC


R46

Radius 46

MSC


R47

Radius 47

MSC


R48

Radius 48

MSC


R49

Radius 49

MSC


R50

Radius 50

MSC


R51

Radius 51

MSC


R52

Radius 52

MSC


R53

Radius 53

MSC


R54

Radius 54

MSC


R55

Radius 55

MSC


R56

Radius 56

MSC


R57

Radius 57

MSC


R58

Radius 58

MSC


R59

Radius 59

MSC


R60

Radius 60

MSC


R61

Radius 61

MSC


R62

Radius 62

MSC


R63

Radius 63

MSC


R64

Radius 64

MSC


R65

Radius 65

MSC


R66

Radius 66

MSC


R67

Radius 67

MSC


R68

Radius 68

MSC


R69

Radius 69

MSC


R70

Radius 70

MSC


R71

Radius 71

MSC


R72

Radius 72

MSC


R73

Radius 73

MSC


R74

Radius 74

MSC


R75

Radius 75

MSC


R76

Radius 76

MSC


R77

Radius 77

MSC


R78

Radius 78

MSC


R79

Radius 79

MSC


R80

Radius 80

MSC


RMNA

Min Radius Arm

MSC


RMXA

Max Radius Arm

MSC



125

Tool Mnemonics

Mnemonic


Tool

Tool Description

V5

Five Volts

MSC


XTR1

Extra 1

MSC


AVRD

Avg Radius

MSC


BERR

Transmission Errors

MSC


DEVI

Deviation

MSC


DIAV

Avg Diameter

MSC


DIMN

Min Diameter

MSC


DIMX

Max Diameter

MSC


DMNA

Min Diameter Arm

MSC


DMXA

Max Diameter Arm

MSC


MSFC

MSF Conductivity

MSFL

Micro Spherically Focused Log

MSFF

MSF Resistivity Fltr

MSFL


MSFI

MSFC-I (STD)

MSFL


MSFO

ADC Offset

MSFL


MSFR

MSF Resistivity

MSFL


MSFT

Temperature

MSFL


MSFV

Head Voltage

MSFL


MSFV

MSFC-V (STD)

MSFL


MTHK

Thickness

MTT

Magnetic Thickness

CUT1

High Pass 200 Hz

NSE

Noise Tool

CUT2

High Pass 600 Hz

NSE

Noise Tool

CUT3

High Pass 1000 Hz

NSE

Noise Tool

CUT4

High Pass 2000 Hz

NSE

Noise Tool

CUT5

High Pass 4000 Hz

NSE

Noise Tool

CUT6

High Pass 6000 Hz

NSE

Noise Tool

FLAG

Sample

NSE

Noise Tool

LHRO

Linear Porosity

NTT

Single Detector Neutron

NAPI

Neutron Counts

NTT

Single Detector Neutron

PFI1

Sensor 1

PFI

Production Fluid Imaging

PFI2

Sensor 2

PFI


PFI3

Sensor 3

PFI


ROT

Rotation

PFI


SFLG

Sampling

PFI


RFCW

Raw Flowmeter

PLT

Continuous Flowmeter

CWFM

Flowmeter

PLT

Continuous Flowmeter

MS

Master Sub

PLT

FlexStak Master Sub

FDNS

Fluid Density

PLT

Fluid Density

RFDN

Raw Fluid Density

PLT

Fluid Density

DTMP

Delta Temperature

PLT

Maxim Flowmeter FB/XY/Temp

RFCW

Raw Flowmeter

PLT



126

Tool Mnemonics

Mnemonic


Tool

Tool Description

RTMP

Raw Temperature

PLT


TEMP

Temperature

PLT


UCLX

Uncorrected X Caliper

PLT


UCLY

Uncorrected Y Caliper

PLT


CAL2

Y Caliper

PLT


CALI

X Caliper

PLT


CWFM

Flowmeter

PLT


Gas

Gas

PLT

PL Analysis - Zonal

Oil

Oil

PLT

PL Analysis - Zonal

WATE

Water

PLT

PL Analysis - Zonal

DIA

Diameter

PLT


MS

Master SUB

PLT

Production Logging Telemetry

MSBV

Master SUB BUSV

PLT


MSHV

Master SUB HV

PLT


DTMP

Delta Temperature

PLT

Temperature

RTMP

Raw Temperature

PLT

Temperature

TEMP

Temperature

PLT

Temperature

SERP

Enhanced Sigma

PND

Pulsed Neutron Decay

PBGF

Far Background

PND


PBGN

Near Background

PND


PBSR

Borehole Ratio

PND


RBNF

Ratio Burst Near to Far

PND


RFIC

Far Inelastic to Capture

PND


RNBC

Burst Near to Capture

PND


ROFF

Error in fit for Sigma Far

PND


ROFN

Error in fit for Sigma Near

PND


SGBF

Far Borehole Sigma

PND


SGBN

Near Borehole Sigma

PND


SGFF

Far Formation Sigma

PND


SGFN

Near Formation Sigma

PND


SIGD

Departure Sigma

PND


SP1

Spectrum trace

PND


ACPE

AACP Error

PND


AUX2

Cartridge Temperature

PND


BGF

Far Background counts

PND


BGN

Near Background counts

PND


CTSB

CTSB Errors

PND


FAR

Far Counts

PND


F1

Far Counts

PND


FB1

Bin 7 of 1428 Hz Burst Far

PND



127

Tool Mnemonics

Mnemonic


Tool

Tool Description

FB2


PND


FB3


PND


FB4


PND


FB5


PND


FB6


PND


FB7


PND


FB8


PND


FB9


PND


FB10


PND


FB91


PND


FB92


PND


FB93


PND


FB94


PND


FB95


PND


FB96


PND


FS1

Bin 7 of Servo Burst Far

PND


FS2


PND


FS3


PND


FS4


PND


FS5


PND


FS6


PND


FS7


PND


FS8


PND


FS9


PND


FS10


PND


FS91


PND


FS92


PND


FS93


PND


FS94


PND


FS95


PND


FS96


PND


HESC

High Energy Slope of Capture Spectra

PND


HVFB

High Volt FB

PND


MLR

Mult-Low Beam Current

PND


NEAR

Near Count Rate

PND


N1

Near Count Rate

PND


NB1

Bin 7 of 1428 Hz Burst Near

PND


NB2


PND


NB3


PND


NB4


PND



128

Tool Mnemonics

Mnemonic


Tool

NB5


PND


NB6


PND


NB7


PND


NB8


PND


NB9


PND


NB10


PND


NB91

Bin 1of 1428 Hz Burst Near

PND


NB92


PND


NB93


PND


NB94


PND


NB95


PND


NB96


PND


NBPS

Narrow Burst Pulse Shape

PND


NPUL

# of Narrow Burst firings per half foot

PND


NS1

Bin 7 of Servo Burst Near

PND


NS2


PND


NS3


PND


NS4


PND


NS5


PND


NS6


PND


NS7


PND


NS8


PND


NS9


PND


NS10


PND


NS91


PND


NS92


PND


NS93


PND


NS94


PND


NS95


PND


NS96


PND


PRFS

Servo Firing Rate

PND


PWM

High Volt PWM

PND


QUAL

Output Quality

PND


RATI

Ratio Capture

PND


RPC

Replenish Current

PND


RPL

Ripple Avg

PND


SB11

1428 Hz Spectral Ch 1 Bin 1

PND


SB12


PND


SB13


PND


SB14


PND



129

Tool Description

Tool Mnemonics

Mnemonic


Tool

Tool Description

SB15


PND


SB21


PND


SB22


PND


SB23


PND


SB24


PND


SB25


PND


SB31


PND


SB32


PND


SB33


PND


SB34


PND


SB35


PND


SB41


PND


SB42


PND


SB43


PND


SB44


PND


SB45


PND


SB4Q

Ratio of SB45 to Output Quality

PND


SIGF

Sigma Far

PND


SIGN

Sigma Near

PND


SPUL

# of Servo Burst Firings per half foot

PND


SRC

Source Current

PND


SS11

Servo Spectral Ch 1 Bin 1

PND


SS12


PND


SS13


PND


SS14


PND


SS15


PND


SS21


PND


SS22


PND


SS23


PND


SS24


PND


SS25


PND


SS31


PND


SS32


PND


SS33


PND


SS34


PND


SS35


PND


SS41


PND


SS42


PND


SS43


PND


SS44


PND



130

Tool Mnemonics

Mnemonic


Tool

Tool Description

SS45


PND


POD

Pad Orientation Tool

POT

Pad Orientation Tool

DQGP

Delta Quartz Pressure

QPG

Quartzdyne Pressure

QGPR

Quartz Pressure

QPG

Quartzdyne Pressure

QTMP

Quartz Temperature

QPG

Quartzdyne Pressure

RQGP

Raw Quartz Pressure

QPG

Quartzdyne Pressure

RTMP

Raw Temperature

QPG

Quartzdyne Pressure

ETFI

Time From Injection

RTE

Tracer Ejector

DT


INCL

Inclination

Sector Bond

tool

Fast Formation Sector Bond

RelB

Relative Bearing

Sector Bond

tool


TT3F

Travel Time 3 ft

Sector Bond

tool


TT4

Raw TT

Sector Bond

tool


TT5F

Travel Time 5 ft

Sector Bond

tool


TTC

Travel Time CAL

Sector Bond

tool


TTS1

Travel Time SEC1

Sector Bond

tool


TTS2

Travel Time SEC2

Sector Bond

tool


TTS3

Travel Time SEC3

Sector Bond

tool


TTS4

Travel Time SEC4

Sector Bond

tool


TTS5

Travel Time SEC5

Sector Bond

tool


TTS6

Travel Time SEC6

Sector Bond

tool


TTS7

Travel Time SEC7

Sector Bond

tool


TTS8

Travel Time SEC8

Sector Bond

tool


VAMP

Variable Energy

Sector Bond

tool


VDL1


Sector Bond

tool


VDL2


Sector Bond

tool


XY1

XY Signature 3 ft

Sector Bond

tool


XY2

XY Signature 5 ft

Sector Bond

tool


AAVG

Avg Energy

Sector Bond

tool


AM3F

Amplitude 3 ft

Sector Bond

tool


AM5F

Amplitude 5 ft

Sector Bond

tool


AMAX

Max Energy

Sector Bond

tool


AMIN

Min Energy

Sector Bond

tool


AMP1

Sector #1

Sector Bond

tool


AMP2

Sector #2

Sector Bond

tool


AMP3

Sector #3

Sector Bond

tool


Amp4

Raw Amp

Sector Bond

tool


AMP4

Sector #4

Sector Bond

tool


AMP5

Sector #5

Sector Bond

tool


AMP6

Sector #6

Sector Bond

tool


Sector Bond®tool


131


Tool Mnemonics

Mnemonic


Tool

Tool Description

AMP7

Sector #7

Sector Bond

tool


AMP8

Sector #8

Sector Bond

tool


AMPC

Amplitude Cal

Sector Bond

tool


ATTN

Attenuation

Sector Bond

tool


BI

Bond Index

Sector Bond

tool


CS


Sector Bond

tool


AAVG

Avg Energy

Sector Bond

tool

Sector Bond

AM3F

Amplitude 3 ft

Sector Bond

tool

Sector Bond

AM5F

Amplitude 5 ft

Sector Bond

tool

Sector Bond

AMAX

Max Energy

Sector Bond

tool

Sector Bond

AMIN

Min Energy

Sector Bond

tool

Sector Bond

AMP1

Sector #1

Sector Bond

tool

Sector Bond

AMP2

Sector #2

Sector Bond

tool

Sector Bond

AMP3

Sector #3

Sector Bond

tool

Sector Bond

AMP4

Sector #4

Sector Bond

tool

Sector Bond

Amp4

Raw Amp

Sector Bond

tool

Sector Bond

AMP5

Sector #5

Sector Bond

tool

Sector Bond

AMP6

Sector #6

Sector Bond

tool

Sector Bond

AMP7

Sector #7

Sector Bond

tool

Sector Bond

AMP8

Sector #8

Sector Bond

tool

Sector Bond

AMPC

Amplitude Cal

Sector Bond

tool

Sector Bond

ATTN

Attenuation

Sector Bond

tool

Sector Bond

BI

Bond Index

Sector Bond

tool

Sector Bond

CS


Sector Bond

tool

Sector Bond

DT


Sector Bond

tool

Sector Bond

INCL

Inclination

Sector Bond

tool

Sector Bond

RelB

Relative Bearing

Sector Bond

tool

Sector Bond

TT3F

Travel Time 3 ft

Sector Bond

tool

Sector Bond

TT4

Raw Travel Time

Sector Bond

tool

Sector Bond

TT5F

Travel Time 5 ft

Sector Bond

tool

Sector Bond

TTC

Travel Time CAL

Sector Bond

tool

Sector Bond

TTS1

Travel Time SEC1

Sector Bond

tool

Sector Bond

TTS2

Travel Time SEC2

Sector Bond

tool

Sector Bond

TTS3

Travel Time SEC3

Sector Bond

tool

Sector Bond

TTS4

Travel Time SEC4

Sector Bond

tool

Sector Bond

TTS5

Travel Time SEC5

Sector Bond

tool

Sector Bond

TTS6

Travel Time SEC6

Sector Bond

tool

Sector Bond

TTS7

Travel Time SEC7

Sector Bond

tool

Sector Bond

TTS8

Travel Time SEC8

Sector Bond

tool

Sector Bond

VAMP

Variable Energy

Sector Bond

tool

Sector Bond


132

Tool Mnemonics

Mnemonic


Tool

Tool Description

VDL1


Sector Bond

tool

Sector Bond

VDL2


Sector Bond

tool

Sector Bond

XY1

XY Signature 3 ft

Sector Bond

tool

Sector Bond

XY2

XY Signature 5 ft

Sector Bond

tool

Sector Bond

ACCX

X Axis Accelerometer

SED

Six Electrode Dipmeter

ACCY

Y Axis Accelerometer

SED


ACCZ

Z Axis Accelerometer

SED


ADZ

A/D Zero

SED


BHVF

Borehole Volume Flag

SED


BHVL

Borehole Volume

SED


CAL1

Caliper 1

SED


CAL2

Caliper 2

SED


CAL3

Caliper 3

SED


CAL4

Caliper 4

SED


CAL5

Caliper 5

SED


CAL6

Caliper 6

SED


CTEM

Temperature

SED


DIA1

Diameter 1

SED


DIA2

Diameter 2

SED


DIA3

Diameter 3

SED


DREF

Develco 5V Reference

SED


DXTM

Time From Computer

SED


HAZI

Hole Azimuth

SED


HDEV

Hole Deviation

SED


HV

Head Volts

SED


MAGX

X Axis Magnetometer

SED


MAGY

Y Axis Magnetometer

SED


MAGZ

Z Axis Magnetometer

SED


P1AZ

Pad 1 Azimuth

SED


PDH1

Pad 1 High Gain

SED


PDH2

Pad 2 High Gain

SED


PDH3

Pad 3 High Gain

SED


PDH4

Pad 4 High Gain

SED


PDH5

Pad 5 High Gain

SED


PDH6

Pad 6 High Gain

SED


PDL1

Pad 1 Low Gain

SED


PDL2

Pad 2 Low Gain

SED


PDL3

Pad 3 Low Gain

SED


PDL4

Pad 4 Low Gain

SED


PDL5

Pad 5 Low Gain

SED



133

Tool Mnemonics

Mnemonic


Tool

Tool Description

PDL6

Pad 6 Low Gain

SED


PDLV

Pad Voltage

SED


PP

Pad Pressure

SED


ROT

Rotation

SED


TOTG

Total G Field

SED


TOTH

Total H Field

SED


ZACC

Z Acceleration

SED


DC10

Servo 10 Time On

SFT

Selective Formation Tester

DC9

Servo 9 Time Off

SFT


DMIN

Time Of Day - min

SFT


DSEC

Time Of Day - s

SFT


DSVO

Starting Volume

SFT


DVOL

Digital Pretest Volume

SFT


ETIM

Elapsed Time

SFT


HOUR

Time Of Day - Hours

SFT


LCAL

Log Cal (Debug)

SFT


LZER

Log Zero (Debug)

SFT


MOTR

Motor Voltage

SFT


OSGP

Sample Pressure x1

SFT


PADA

Pad Pressure Absolute

SFT


PADP

Pad Pressure

SFT


QDIG

Digital QPG Pressure

SFT


QONE

QPG Pressure x1

SFT


QPGP

QPG Pressure

SFT


QPGT

QPG Temperature

SFT


QPRP

QPG Pressure (Raw)

SFT


QPRT

QPG Temperature (Raw)

SFT


RATE

Pretest Rate

SFT


RSGP

Raw Sample Pressure

SFT


SGP

Sample Pressure

SFT


SGPP

Digital Sample Pressure

SFT


STCC

Pretest Rate (Debug)

SFT


STOC

SMPL Tank Current

SFT


SYSP

System Pressure

SFT


TEMP

Temperature

SFT


VOL

Volume

SFT


GAPI

GAPI

SGR

Spectral Gamma Ray

GCPS

Gross Gamma CPS

SGR

Spectral Gamma Ray

GRS

Stripped Gamma Ray

SGR

Spectral Gamma Ray

KCPS

Potassium CPS

SGR

Spectral Gamma Ray


134

Tool Mnemonics

Mnemonic


Tool

Tool Description

POTA

Potassium

SGR

Spectral Gamma Ray

RFAC

SGR R factor

SGR

Spectral Gamma Ray

TCPS

Thorium CPS

SGR

Spectral Gamma Ray

TH/K

Thorium/Potassium

SGR

Spectral Gamma Ray

TH/U

Thorium/Uranium

SGR

Spectral Gamma Ray

THOR

Thorium

SGR

Spectral Gamma Ray

U/K

Uranium/Potassium

SGR

Spectral Gamma Ray

U/KT

Uranium/(Potassium + Thorium)

SGR

Spectral Gamma Ray

UCPS

Uranium CPS

SGR

Spectral Gamma Ray

URAN

Uranium

SGR

Spectral Gamma Ray

FGAP

Flt. GAPI

SGR

Spectral Gamma Ray

FGCS

Flt. Gamma CPS

SGR

Spectral Gamma Ray

FKCS

Flt. Potassium CPS

SGR

Spectral Gamma Ray

FPOT

Flt. Potassium

SGR

Spectral Gamma Ray

FTCS

Flt. Thorium CPS

SGR

Spectral Gamma Ray

FTHR

Flt. Thorium

SGR

Spectral Gamma Ray

FUCS

Flt. Uranium CPS

SGR

Spectral Gamma Ray

FURA

Flt. Uranium

SGR

Spectral Gamma Ray

GAPI

GAPI

SGR

Spectral Gamma Ray

GCPS

Gross Gamma CPS

SGR

Spectral Gamma Ray

GRS

Stripped Gamma Ray

SGR

Spectral Gamma Ray

HVG

High Voltage Control

SGR

Spectral Gamma Ray

KCPS

Potassium CPS

SGR

Spectral Gamma Ray

KPK.

Potassium Peak

SGR

Spectral Gamma Ray

OFL1

Output Flag 1

SGR

Spectral Gamma Ray

POTA

Potassium

SGR

Spectral Gamma Ray

QFL4

Quality Flag 4

SGR

Spectral Gamma Ray

QFL5

Quality Flag 5

SGR

Spectral Gamma Ray

RFAC

SGR R factor

SGR

Spectral Gamma Ray

TCPS

Thorium CPS

SGR

Spectral Gamma Ray

TEMP

Temperature

SGR

Spectral Gamma Ray

TH/K

Thorium/Potassium

SGR

Spectral Gamma Ray

TH/U

Thorium/Uranium

SGR

Spectral Gamma Ray

THOR

Thorium

SGR

Spectral Gamma Ray

TPK.

Thorium Peak

SGR

Spectral Gamma Ray

U/K

Uranium/Potassium

SGR

Spectral Gamma Ray

U/KT

Uranium/(Potassium + Thorium)

SGR

Spectral Gamma Ray

UCPS

Uranium CPS

SGR

Spectral Gamma Ray

UPF0

Upslope Flag 0

SGR

Spectral Gamma Ray

UPF1

Upslope Flag 1

SGR

Spectral Gamma Ray


135

Tool Mnemonics

Mnemonic


Tool

Tool Description

UPF2

Upslope Flag 2

SGR

Spectral Gamma Ray

UPF3

Upslope Flag 3

SGR

Spectral Gamma Ray

UPK

Uranium Peak

SGR

Spectral Gamma Ray

URAN

Uranium

SGR

Spectral Gamma Ray

100V

Head Voltage

SGR

Spectral Gamma Ray

5V

5 Volt Reference

SGR

Spectral Gamma Ray

DAC

DAC Output

SGR

Spectral Gamma Ray

SP0

SP0

SP


SP

SP

SP


DPSS

Density Porosity (SS)

SPeD

Spectral Pe Density

DRHO

Density Correction

SPeD

Spectral Pe Density

FSSM

SS Fresh Smeared

SPeD

Spectral Pe Density

GLS

LS Gain Index

SPeD

Spectral Pe Density

GSS

SS Gain Index

SPeD

Spectral Pe Density

HDPH

HRes DPHI

SPeD

Spectral Pe Density

LCMP

LS Compton CPS

SPeD

Spectral Pe Density

LLPE

LS Lower Pe CPS

SPeD

Spectral Pe Density

LRPE

LS Res. Match Pe

SPeD

Spectral Pe Density

LSPK

LS Cesium Peak

SPeD

Spectral Pe Density

LSRS

LS Resolution

SPeD

Spectral Pe Density

LSUC

LS Barite CPS

SPeD

Spectral Pe Density

LTCP

Total LS CPS

SPeD

Spectral Pe Density

LUPE

SPeD

Spectral Pe Density

NILS

LS Upper Pe CPS LS Noise Index

SPeD

Spectral Pe Density

NISS

SS Noise Index

SPeD

Spectral Pe Density

PEC

SPeD

Spectral Pe Density

PEF

Pe Correction Photoelectric Effect

SPeD

Spectral Pe Density

RHOB

Bulk Density

SPeD

Spectral Pe Density

RHOS

HRes Bulk Density

SPeD

Spectral Pe Density

RLS

LS Gain

SPeD

Spectral Pe Density

RSS

SS Gain

SPeD

Spectral Pe Density

SCMP

SS Compton CPS

SPeD

Spectral Pe Density

SLPE

SPeD

Spectral Pe Density

SPEF

SS Lower Pe CPS SS Pe

SPeD

Spectral Pe Density

SSPK

SS Cesium Peak

SPeD

Spectral Pe Density

SSRS

SS Resolution

SPeD

Spectral Pe Density

SSUC

SS Barite CPS

SPeD

Spectral Pe Density

STCP

Total SS CPS

SPeD

Spectral Pe Density

STME

SPeD Delta Time

SPeD

Spectral Pe Density

SUPE

SS Upper Pe CPS

SPeD

Spectral Pe Density


136

Tool Mnemonics

Mnemonic


Tool

Tool Description

TEMP

Temperature

SPeD

Spectral Pe Density

UDDF

Uncorrected Density Diff

SPeD

Spectral Pe Density

UMA

Matrix Volumetric

SPeD

Spectral Pe Density

UPHI

Density Porosity (USR)

SPeD

Spectral Pe Density

URHB

Uncorrected Bulk Density

SPeD

Spectral Pe Density

USRB

Uncorrected SS RhoB

SPeD

Spectral Pe Density

BSSM

SS Barite Smeared

SPeD

Spectral Pe Density

DDIF

Density Difference

SPeD

Spectral Pe Density

DPDL

Density Porosity (DL)

SPeD

Spectral Pe Density

DPHI

Density Porosity (LS)

SPeD

Spectral Pe Density

DP1R

10K Deep R

STI

Simultaneous Triple Induction

DP1X

10K Deep X

STI


DP2R

20K Deep R

STI


DP2X

20K Deep X

STI


DP4R

40K Deep R

STI


DP4X

40K Deep X

STI


DVC1

10K Deep STI Cond.

STI


DVC2

20K Deep STI Cond.

STI


DVC4

40K Deep STI Cond.

STI


DVR1

10K Deep STI

STI


DVR2

20K Deep STI

STI


DVR4

40K Deep STI

STI


HDV

Head Voltage

STI


MD1R

10K Medium R

STI


MD1X

10K Medium X

STI


MD2R

20K Medium R

STI


MD2X

20K Medium X

STI


MD4R

40K Medium R

STI


MD4X

40K Medium X

STI


MVC1

10K Medium STI Cond.

STI


MVC2


STI


MVC4


STI


MVR1

10K Medium STI

STI


MVR2

20K Medium STI

STI


MVR4

40K Medium STI

STI


RD1R

RCAL R

STI


RD1X

RCAL X

STI


RWA

RWA

STI


SFL4

SFL 4 FT Resolution

STI


SFLE

SFL E (RAW)

STI



137

Tool Mnemonics

Mnemonic


Tool

Tool Description

SFLI

SFL I (RAW)

STI


SFLR

SFL Resistivity

STI


SFLU

SFL Raw Resistivity

STI


TEMP

Temperature

STI


XD1R

XCAL R

STI


XD1X

XCAL X

STI


ZD1R

Zero R

STI


ZD1X

Zero X

STI


DTEN

Delta Tension

TEN

Tension

TENS

Tension

TEN

Tension

ACCX

X Accelerometer

WCS

Wireline Communication System

ACCY

Y Accelerometer

WCS


ACCZ

Z Accelerometer

WCS


INCL

Inclination

WCS


ITMP

Internal Temp

WCS


MDAC

Modem DAC

WCS


MFRQ

Modem Frequency

WCS


MVCO

Modem VCO

WCS


OVPC

OV Protect Current

WCS


PRIN

Post Reg Input

WCS


RELB

Relative Bearing

WCS


WCSS

WCS Status

WCS


WITB

WCS ITB Voltage

WCS


WTLI

Tool Current

WCS


RWTH

Raw Water Holdup

WHU

Water Holdup

WGWH

Water-Gas Holdup

WHU

Water Holdup

WOWH

Water-Oil Holdup

WHU

Water Holdup

MBVI

Bulk Volume Irreducible

NMRT

Nuclear Magnetic Resonance Tool

MFFI

Free Fluid Index

NMRT


MPHI

Effective Porosity

NMRT


MCBW

Clay Bound Water

NMRT


MPHS

Total Porosity

NMRT


MCTF

Free Fluid Index Cutoff

NMRT


MCTC

Clay Bound Water Cutoff

NMRT


PM90

Permeability (Murtsovkin 90% Porosity)

NMRT


PM98

Permeability (Murtsovkin 98% Porosity)

NMRT


PMT

Permeability (Timur)

NMRT


PMTC

Permeability (Timur/Coates)

NMRT


PMK

Permeability (T2 model)

NMRT


TM90

T2 - 90% Porosity

NMRT



138

Chart Book Wft037399

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