Chart Book Wft037399

Wireline Services Log Interpretation

Chart Book

Wireline Services Log Interpretation

Chart BookWeatherford products and services are subject to the Company’s standard terms and conditions, available on request or atwww.weatherford.com. For more information contact an authorized Weatherford representative. Unless noted otherwise, trademarksand service marks herein are the property of Weatherford. Specifications are subject to change without notice.

Table of Contents

Chart Page

Section 1 - General Information

Borehole Environment and Formation Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 . . . . . . . . . 2

Unit Conversions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 . . . . . . . . . . 3

Logging Tool Response in Sedimentary Minerals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 . . . . . . . . . . 6

Section 2 - Temperature and Fluids

Estimation of Formation Temperature (English). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 . . . . . . . . . 10

Estimation of Formation Temperature (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 . . . . . . . . . 11

Resistivity vs. Temperature – NaCl Solutions (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 . . . . . . . . . 12

Resistivity vs. Temperature – NaCl Solutions (Metric). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 . . . . . . . . . 13

Resistivity of Equivalent NaCl Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 . . . . . . . . . 14

Estimation of Rmf 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 Determination from Static SP (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 . . . . . . . . . 20

Rw vs. Rwe (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 . . . . . . . . . 21

Rw vs. Rwe (Metric) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 . . . . . . . . . 22

Section 4 - Natural Radioactivity

Gamma Ray Borehole Correction Chart for Borehole Size and Mud Weight (English) . . . . . . . . . . . . . 4-1 . . . . . . . . . 24

Gamma Ray Borehole Correction Chart for Borehole Size and Mud Weight (Metric) . . . . . . . . . . . . . . 4-2 . . . . . . . . . 25

Spectral Gamma Ray Response Borehole Size and Mud Weight Correction (English) . . . . . . . . . . . . . 4-3 . . . . . . . . . 26

Spectral Gamma Ray Response Borehole Size and Mud Weight Correction (Metric) . . . . . . . . . . . . . . 4-4 . . . . . . . . . 27

Spectral Gamma Ray Potassium Response Borehole 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 CorrectionMedium 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

Table of Contents (continued)

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 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



Porosity and Lithology from Compensated Neutron andSpectral Pe Density (SPeD) Log—Fresh Mud System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26 . . . . . . . . 79

Porosity and Lithology from Compensated Neutron and Spectral Pe Density (SPeD) Log—Salt Mud System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27 . . . . . . . . 80

Porosity and Lithology from Compensated Neutron and Sonic Log (English) . . . . . . . . . . . . . . . . . . . 6-28 . . . . . . . . 81

Table of Contents(continued)

Porosity and Lithology from Compensated Neutron and Sonic Log (Metric) . . . . . . . . . . . . . . . . . . . . 6-29 . . . . . . . . 82

Porosity and Lithology from Sonic and Spectral Pe Density (SPeD) Log—Fresh Water (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-30 . . . . . . . . 83

Porosity and Lithology from Sonicand Spectral Pe Density (SPeD) Log—Fresh Water (Metric). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31 . . . . . . . . 84

Spectral Pe Density (SPeD) Photoelectric Correction for Borehole Size . . . . . . . . . . . . . . . . . . . . . . . 6-32 . . . . . . . . 85

Porosity and Lithology from Spectral Pe Density (SPeD) Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33 . . . . . . . . 86

Apparent Matrix Volumetric Photoelectric Factor Spectral PeDensity (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

2

Borehole Environmentand Formation Parameters

1-1

© 2006–2007 Weatherford. All rights reserved.

Transition ZoneRannulus


3

1-2

Unit Conversions

Length

1 inch (in.) . . . . . . . . . . . . . . . . . . . . . . . . 2.540 cm1 foot (ft) . . . . . . . . . . . . . . . . . . . . . . . . . 30.48 cm1 meter (m) . . . . . . . . . . . . . . . . . . . . . . . 39.37 in.1 meter (m) . . . . . . . . . . . . . . . . . . . . . . . 3.281 ft

Volume

1 barrel (bbl) of oil . . . . . . . . . . . . . . . . . . 42 U.S. gal5.6154 ft 3

158.98 L

1 U.S. gallon (gal) . . . . . . . . . . . . . . . . . . . 231.00 in.3

0.1337 ft3

3.785 L

1 L (1000 cm3 ) . . . . . . . . . . . . . . . . . . . . 0.03532 ft3

0.2642 U.S. gal0.001 m3

1 acre . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,758 bbl43,560 ft3

1233 m3

1 cubic foot (ft3 ) . . . . . . . . . . . . . . . . . . . . 7.481 U.S. gal28.32 L

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

4.546 L

Mass

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

1 pound (lb) . . . . . . . . . . . . . . . . . . . . . . . 0.4536 kg1 metric ton (1000 kg) . . . . . . . . . . . . . . . 2205 lb

Density, Specific, Gravity, etc.

1 gram per cubic centimeter (g/cm3 ) . . . . . 62.43 lb/ft3

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 waterat 62˚F weighs . . . . . . . . . . . . . . . . . . . . . 10 lb

1 barrel of oil weighs (in lb) . . . . . . . . . . . . 350 multiplied bydensity of oil in g/cm3

Oil Gravity in degrees API is computed as:

˚API = - 131.5

Pressure

1 atmosphere (atm) . . . . . . . . . . . . . . . . . 14.70 psi1.0332 kPa

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

1 kilogram per square centimeter (kg/cm2) . . . . . . . . . . . . . . . . . 14.22 psi

Pressure Gradientpsi/ft = 0.433 x kPa/m

= lb/ft3/144= lb/gal/19.27

kPa = 0.433 x kPa= psi/ft x 0.231

Temperature Conversions

˚F = 1.8˚C + 32˚C = (˚F - 32)/1.8 x ˚C˚R (Rankine) = ˚F + 459.69K (kelvin) = ˚C + 273.16

Concentration

1 grain/U.S. gal . . . . . . . . . . . . . . . . 17.118 ppm

1 gram/L . . . . . . . . . . . . . . . . . . . . . 58.417 grains/gal

141.5

Spec. Grav. @ 60˚F

Oil Gravity R esistivityConductivity

Pressure Temperature Depth TemperatureGradient

Conversion

psiMPa

0

5,000

10,000

15,000

20,000

25,000

30,000200

150

100

50

0

psi = MPa x 145.038

R(ohm - m)

C(mmho - m)

08

0.5

1

2,000

1,000

200 5

100 10

20 50

10 100

5

4

3

2

1 1,000

500

SpecificGravity@ 60˚F ˚API

0

1.0 10

20

30

40

50

60

70

80

0.9

0.8

0.7

API = -131.5141. 5

sp. gr. @ 60˚F

1.0

1.5

2.0

2.5

3.0

3.5

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

1˚F/100 ft = 1.822˚C/100 m1˚C/100 m = 0.5488˚F/100 ft

˚F/100 ft ˚C/100 m

1 m = 3.28 ft

30,000

25,000

20,000

15,000

10,000

5,000

0

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

ftm

320

50

˚C ˚F

100

150

200

250

300

350

400

450

500

250

200

150

100

˚C = (˚F - 32) • 5/9

˚F = (˚C • 9/5) + 32

50

4

1-2

Unit Conversions


Unit Conversions

1-2

5


Mud Weight or Pressure Gradient

g/cm3

1.0

1.1

1.2

1.3

1.0

1.5

1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.3

2.4

8.345

lb/ft3 lb/gal psi/ft grains/gal ppm

(@ 77˚F)

g/L ppm

(@ 77˚F)

NaCl Solution Concentration

62.4

70

9

10

8011

90 12

13

100

14

15

16

110

120

17

130

18

19140

20

1 g/cm3 = 62.43 lb/ft3

= 8.345 lb/gal (U.S.)

= lb/ft3 /144psi/ft = 0.433 • g/cm

= lb/gal/19.27

0.433

0.45

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

0.95

1.00

1005.8

10

20

30

40

500

1,000

50

100

150

200

250

300

400

500

1,000

5,000

10,000

5,000

10,000

50,000

100,000

200,000

300,000

100

500

1,000

5,000

10,000

50,000

100,000

200,000

300,000

0.1

0.5

1

5

10

50

100

200

300

6

Logging Tool Response in Sedimentary Minerals

Name FormulaLOG

ρCNT

φc∆t s∆t eP U GR Σ

g/cm3 p.u. µs/ft µs/ft barn/elect barn/cm3 API units c.u.

Silicates

Quartz

Carbonates

Oxidates

Phosphates

Cristobalite

Opal (3.5% H20)

Garnet

Hornblende

Tourmaline

Calcite

Dolomite

Ankerite

Siderite

Hematite

Magnetite

Geothite

Limonite

Gibbsite

Hydroxyapatite

Chlorapatite

Fluorapatite

Carbonapatite

SiO2

SiO2

SiO2 (H20).1209

Fe3 Al2 (SiO4)3

Ca2 NaMg2 Fe2 AlSi8 O22 (O,OH)2

NaMg3Al6B3Si6O2(OH)4

CaCO3

CaCO3 MgCO3

Ca(Mg,Fe)(CO3)2

FeCO3

Fe2 O3

Fe3 O4

FeO(OH)

FeO(OH)(H2O)2.05

Al(OH)3

Ca5(PO4)3OH

Ca5(PO4)3Cl

Ca5(PO4)3F

(Ca5(PO4)3)2CO3H2O

2.64

2.30

2.12

4.31

3.15

2.98

2.71

2.87

2.90

3.89

3.17

3.18

3.21

3.13

5.18

5.09

4.28

3.60

2.49

-1.9

-2.9

2.0

6.0

7.0

21

0

1.8

1.0

11.5

7.5

-1.0

-1.5

8.0

10.0

8.0

60+

60+

60+

55

58

36

44

48

43

53

45

43

42

44

45

73

57

77

64

82

89

73

84

85

1.81

1.81

1.75

11.09

5.99

2.14

74

155

103

70

80

5.81

6.06

5.82

5.58

21.48

22.24

19.02

13.00

1.10

5.08

3.14

9.32

14.69

4.78

4.16

3.71

47.80

18.87

6.38

13.77

9.01

27.03

57.14

111

113

81.41

46.80

2.74

18.42

19.27

18.68

17.47 —

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

4.26

3.75

4.80

45.0

18.0

7485

7.10

4.70

21.0

52.5

101

103

84.0

71.0

26.0

10.50

131

9.00

9.09

Reference: “Radioactive Logging Parameters for Common Minerals”; 1979;

Edmundson, H. and Raymer, L.L., SPWLA 20th Annual Logging Symposium, June, 1979, Tulsa.

1-3



Name Formula LOGρ

CNTφ

c∆t s∆t eP U GR Σg/cm3 p.u. µs/ft µs/ft barn/elect barn/cm3 API units c.u.

Clays

Kaolinite

Coals

Micas

Feldspars

Chlorite

Illite

Anthracite

Bituminous

Lignite

Muscovite

Glauconite

Biotite

Phlogopite

Orthoclase

Anorthoclase

Microcline

Albite

Al4Si4O10(OH)8

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

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

(Ca,Na)7(Al,Mg,Fe)4

CH.358N.009O.022

CH.793N.015O.078

CH.849N.015O.211

KAl2 (Si3AlO10)(OH)2

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

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

KMg3(AlSi3O10(OH)2

KAlSi3O8

KAlSi3O8

KAlSi3O8

NaAlSi3O8

2.60

2.76

2.61

2.12

1.55

1.30

1.05

2.53

2.56

2.56

2.60

2.82

2.54

2.99

40

52

20

40

40

60+

55

-2.5

-1.8

-2.5

-1.5

18.0

30

20

212

105

120

160

69

69

45

50

50

328 1.83

6.30

3.45

2.04

100

207

2.86

2.86

2.86

1.68

2.40

6.37

6.27

0.16

0.17

0.20

4.76

17.39

9.00

4.32

0.25

0.23

0.21

6.77

16.18

18.75

7.24

7.32

7.32

4.37

~ 275

~ 270

—

—

—

80 - 130 13.2

25.0

17.0

14.4

9.21

16.2

12.8

16.9

24.1

30.0

33.3

15.5

15.9

15.3

7.52

180 - 250

250 - 300

150 - 200(Si,Al)8O20(OH)4(H2O)n

Anorthite CaAl2Si2O8 2.75 -1.7 3.13 8.61 7.33

51 220

~ 2 20

~ 2 20

~ 2 20

—

—

49 85

45

Smectite

7

1-3


8


Name Formula LOGρ

CNTφ

c∆t s∆t eP U GR Σg/cm3 p.u. µs/ft µs/ft barn/elect barn/cm3 API units c.u.

Evaporites

Halite

Phosphates

Anhydrite

Gypsum

Trona

Tachydrite

Sylvite

Carnalite

Langbenite

Polyhalite

Kainite

Kieserite

Epsomite

Bischofite

Barite

Celestite

Pyrite

Marcasite

Pyrrhotite

Sphalerite

NaCl

CaSO4

CaSO4(H2O)2

Na2CO3NaHCO3H2O

CaCl2(MgCl2)2(H2O)12

KCl

KClMgCl2(H2O)6

K2SO4(MgSO4)2

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

MgSO4KCl(H2O)3

MgSO4H2O

MgSO4(H2O)7

MgCl2(H2O)6

BaSO4

SrSO4

FeS2

FeS2

Fe7S8

ZnS

2.04

2.98

2.35

2.09

1.66

1.87

1.57

2.82

2.79

2.13

5.00

4.87

4.54

3.93

2.59

1.71

1.54

4.09

3.79

-2.5

-1.5

60+

40

60+

-3.0

60+

-1.5

23

60+

-2.5

-2.6

-2.6

-2.7

40

60+

60+

-1.5

-1.0

67

53

65

92

79

52

58

38

65

69

116 4.65

5.05

3.99

0.71

3.84

8.51

133

59

111

16.96

16.97

20.55

35.93

1.83

1.15

2.59

267

55.2

4.09

3.56

4.32

3.50

9.49

15.05

9.38

1.48

6.37

15.91

6.42

10.04

12.05

7.46

4.74

1.97

3.99

1092

209

84.85

82.64

93.30

141 —

—

—

—

—

—

—

—

—

—

—

—

—

762

12.4

18.6

16.9

406

561

369

24.1

23.7

196

14.0

21.5

323

21.0

22.4

90.3

88.4

94.2

41

Chalopyrite

Galena

CuFeS2

PbS

4.07

6.39

-2.3

-2.8

26.72

1631

109

10422 —

— 101

13.4

50 98

74 140 500+

~ 220

~ 290

—

~ 200

~ 245

100

60 149

57 108

1-3


Section 2

Temperature and Fluids

10

Estimation of Formation Temperature

Gradient ˚F/100 ft 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

0

2500

5000

7500

10,000

12,500

15,000

17,500

20,000

Dep

th (

ft)

Formation Temperature, Tf (˚F)

Example : Given the following conditions: formation temperature = 220˚F, mean surfacetemperature = 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 (Tms = 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.

80 100 150 200 250 300 350 400 450

Mean Surface Temperature, Tms

100 150 200 250 300 350 400 45060

40 100 150 200 250 300 350 400 450

Geothermal gradient

2-1© 2006–2007 Weatherford. All rights reserved.

English

Estimation of Formation Temperature

1.0 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0 3.25Gradient ˚C/100 m

0

1000

2000

3000

4000

5000

6000

7000

Dep

th (

m)

Geothermal gradient

25

25

15

5 50 75 100 125 150 175 200 225 250

50 75 100 125 150 175 200 225 250

Formation Temperature, Tf (˚C)

25 50 75 100 125 150 175 200 225 250

Mean Surface Temperature, Tms

11


Metric

12

Resistivity vs. Temperature - NaCl Solutions

0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100

0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100500

200

100

50

20

10

5

2

1

.5

.2

.1

NaC

l Con

cent

ratio

n (k

ppm

)

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 movedown from the intersection to read 0.2 ohmn at 200˚F.

50 ˚F

75

100

125

150

200

250

300

350

400

T1 + 6.77

T2 + 6.77; ˚F

(˚F)

Rw2 = Rw1 ( )


English

Resistivity vs. Temperature - NaCl Solutions

0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100

0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 100

10 ˚C

25

35

50

75

100

125

150

175

200

T1 + 21.5

T2 + 21.5; ˚CRw2 = Rw1 ( )

Resistivity (ohm-m)

500

200

100

50

20

10

5

2

1

.5

.2

.1

NaC

l Con

cent

ratio

n (k

ppm

)

(˚C)

13


Metric

14


Resistivity of Equivalent NaCl Solutions

Temperature

260

(˚C)(˚F)

240

220

200

180

160

140

120

100

90

80

70

60

50

40

30

20

10

500

400

300

250

200

150

100

90

80

70

60

50

English:

Rw2 Rw1=T1 6.77+

T2 6.77+( ); ˚F

Metric:

Rw2 Rw1= ( ); ˚C

Example:

Given: Temperature = 280˚F and NaCl concentration = 80,000 ppm. Determine: ResistivityR = 0.026 ohm-m

Resistivity

20

ohm-m

10

8

65

4

3

2

1

0.8

0.60.5

0.4

0.3

0.2

0.1

0.08

0.060.05

0.04

0.03

0.02

0.01

Equivalent NaClconcentration

gr/gal@ 24˚Cor 75˚F( )kppm)(20

304050

100

200

300400500

1000

2000

300040005000

10,00013,00014,500

0.2

0.3

0.4

0.60.8

1

2

34

68

10

20

3040

6080

100

200300

T1 21.5+

T2 21.5+

2-5

Estimation of Rmf and Rme

Example

5(ohm-m)

Mud weight

6

(lb/gal) (kg/m3)

16-18 1920-21601680

1560

1440

1320

1200

1514

13

12

11

10

Rm(ohm-m)

54

3

2

1

0.5

0.1

0.05

0.01

10111212141618

Rmf or Rmc

4

3

5

1

0.5

0.2

0.1

0.05

0.02

0.01

1200132014401560168019202160

0.8470.7080.5840.4880.4120.3800.350

lb/gal

Mud Weight

kg/m3 C

Rmf C(Rm) 1.07=

Rmc 0.69 Rmf=2.65( )Rmf

Rm

RmGiven: = 0.6 ohm-m at 180˚F mud

RmfDetermine:

=

and Rmc

Rmf 0.31 ohm-m at 180˚F

=Rmc 1.23 ohm-m at 180˚F (from equation)

Note: This chart may be used when themeasured values of Rmf and Rmc arenot available, but does not apply tolignosulfonate muds.

Mud weight = 12.5 lb/gal

15


Section 3

Spontaneous Potential

18

SP Bed Thickness Correction

20

30

40

50

60

70

80

90

100

110

12020

30

40

50

60

70

80

90

100

110

120SP from log SSP

SP correction factor

1.01.11.21.31.41.5

2.0

2.53.0

3.04.0

5.06.0

30

20

15

10

Bed

Thi

ckne

ss, h

(ft)

9

8

7

6

5

4

31.0 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

= 5 20 50 100 200

Rt

Rm

Given: SP(log) = -40 mV, h = 7 ft, Rt = 16 ohm-m, Rm = 0.8 ohm-m

Solution: Bed thickness = 7 ft, Rt/Rm = 20, SP correction factor = 1.3

Nomograph: SP(log) = -40 mV, SP correction factor = 1.3; SSP = -52 mV

9

8

7

6

5

4

3.5

3

2.5

2

1.5

1

Bed

Thi

ckne

ss, h

(m)


19


Rwe Determination From Static SP

0.1

0.2

0.5

1

2

5

10

20

50

100

-40-20020406080100

Static SP (mV)

R

mfe

/Rw

e

460 + ˚F

537logSP = -70.7

Rmfe

Rwe( )Given: SSP = -80 mV, Tf = 150˚F, Rmf = 0.6 ohm-m

Determine: Rwe

(Note - If Rmf > 0.1 @ 77˚F (25˚C) use Rmfe = 0.85 Rmf

Solution: Rmfe /Rwe = 10.0, Rwe = 0.06 ohm-m

-200-180-160-140-120-100-80-60

0 50 100 150

Formation Temperature

200 250 300

350

400

450

˚F

3-2

English

20


Rwe Determination From Static SP

0.1

0.2

0.5

1

2

5

10

20

50

100

-200-180-160-140-120-100-80-60-40-20020406080100

0 25 50 75 100 125150

175

200225

˚C

Rm

fe/R

we

Static SP (mV)

273 + ˚C

298logSP = -70.7

Rmfe

Rwe( )

Formation Temperature

3-3

Metric

21


Rw vs. Rwe

0.001 0.002 0.005 0.01 0.02 0.05 0.1

0.001 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1001 2 5 10 20 50

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

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

0.2 0.5 1001 2 5 10 20 50

Rw

(oh

m-m

)R

w (ohm

-m)

Rwe (ohm-m)

Rwe (ohm-m)

˚F

˚F

Given: Rwe = 0.02 ohm-m, Tf = 150˚F

Determine Rw; Rw = 0.03 ohm-m @ 150˚F

500

50

0

400

40

0

300

30

0

250

25

0

200

20

0

150

15

0

10

0

70

70

100

3-4

English

Rw vs. Rwe

0.001 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50

10 20 50

1000.001

0.002

0.005

0.01

0.02

0.05

0.1

0.2

0.5

1

2

5

10

20

50

1000.001 0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 100

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

250

25

0

200

200

150

15

0

120

12

0

90

90

65

65

40

40

20

20

Rw

(ohm

-m)

Rw

(ohm-m

)

Rwe (ohm-m)

Rwe (ohm-m)

˚C

˚C

3-5

22


Metric

Section 4

Natural Radioactivity

24

Gamma Ray Borehole Correction Chartfor Borehole Size and Mud Weight

0 2 4 6 8 10 12 14 16

0.1

0.2

0.5

1

2

5

10

Borehole Diameter (in.)

For Hole Size and Mud weight in Open HoleGamma Ray Correction Chart

Air

Water 8.3 lb/galMud 16 lb/gal

0 2 4 6 8 10 12 14 16

0.1

0.2

0.5

1

2

5

10


Air

Water 8.3 lb/gal

Mud 16 lb/gal

eccentered

centered

GR

corr

/GR

log

GR

corr

/GR

log

4-1


English

25


Gamma Ray Borehole Correction Chartfor Borehole Size and Mud Weight

0 50 100 150 200 250 300 350 400

0.1

0.2

0.5

1

2

5

10

Borehole Diameter (mm)

86 mm. centered toolFor Hole Size and Mud weight in Open Hol

Gamma Ray Correction Char

Water 1000 kg/m3Mud 1920 kg/m

3

0 50 100 150 200 250 300 350 400

0.1

0.2

0.5

1

2

5

10


86 mm. eccentered tool

Air

Mud 1920 kg/m3

Water

Air

1000 kg/m3

eccentered

centered

GR

corr

/GR

log

GR

corr

/GR

log

4-2

Metric

26


Spectral Gamma Ray ResponseBorehole Size and Mud Weight Correction

0.0

0 5 10 15 20

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0


GR

corr

/GR

log

Centered Tool Borehole Size and Mudweight CorrectionSGB-BA Gross Gamma Response

water10

12

14

16

18Mud weight (lb/gal)

SGB GC

centered

4-3

English

0.8

0 5 10 15 20

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered Tool Borehole Size and Mudweight CorrectionSGB-BA Gross Gamma Response

water

10

12

14

16


SGB GE

GR

corr

/GR

log

eccentered

27


Spectral Gamma Ray ResponseBorehole Size and Mud Weight Correction

0.0

0 100 200 300 400 500

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

Centered Tool Borehole Size and Mudweight CorrectionSGB-BA Gross Gamma Response

water

1.2

1.4

1.6

1.8

2.0

2.2Mud weight (g/cm3)

SGB GCM

centered


GR

corr

/GR

log

4-4

Metric

0.8

0 100 200 300 400 500

1.0

1.2

1.4

1.6

1.8

2.0

Eccentered Tool Borehole Size and Mudweight CorrectionSGB-BA Gross Gamma Response

water

1.2

1.4

1.6

1.8

2.0


SGB GEM


GR

corr

/GR

log

eccentered

28


Spectral Gamma Ray Potassium ResponseBorehole Size and Mud Weight Correction

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0


Kco

rr /K

log

Centered Tool Borehole Size and Mudweight CorrectionSGB-BA Potassium Response

water

10

12

14

16


SGB KC

0 5 10 15 20

centered

4-5

English

0.8

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered Tool Borehole Size and Mudweight CorrectionSGB-BA Potassium Response

water

10

12

14

16


SGB KE

0 5 10 15 20

Kco

rr /K

log

eccentered

29


Spectral Gamma Ray Potassium ResponseBorehole Size and Mud Weight Correction

4-6

Metric

0.0

0 100 200 300 400 500

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0


Centered Tool Borehole Size and Mudweight CorrectionSGB-BA Potassium Response

water

1.21.4

1.6

1.8

2.0


SGB KCM

Kco

rr /K

log

centered

0.0

0 100 200 300 400 500

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered Tool Borehole Size and Mudweight CorrectionSGB-BA Potassium Response

water

1.2

1.4

1.6

1.8

2.0


SGB KEM

Kco

rr /K

log

eccentered

30


Spectral Gamma Ray Uranium ResponseBorehole Size and Mud Weight Correction

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0


Uco

rr /U

log

Centered ToolBorehole Size and Mudweight Correction SGB-BA Uranium Response

water

10

12

14

16


SGB UC

0 5 10 15 20

centered

4-7

English

0.8

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered ToolBorehole Size and Mudweight CorrectionSGB-BA Uranium Response

water

10

12

14

16


SGB UE

0 5 10 15 20

Uco

rr /U

log

eccentered

31


Spectral Gamma Ray Uranium ResponseBorehole Size and Mud Weight Correction

0.8

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered ToolBorehole Size and Mudweight CorrectionSGB-BA Uranium Response

water

1.2

1.4

1.6

1.8

2.0


SGB UEM

Uco

rr /U

log

0 100 200 300 400 500

eccentered

4-8

Metric

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0


Centered ToolBorehole Size and Mudweight CorrectionSGB-BA Uranium Response

water

1.2

1.4

1.6

1.8

2.0


SGB UCM

0 100 200 300 400 500

Uco

rr /U

log

centered

32


Spectral Gamma Ray Thorium ResponseBorehole Size and Mud Weight Correction

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0


Th c

orr /

Th l

og

Centered ToolBorehole Size and Mudweight CorrectionSGB-BA Thorium Response

water

10

12

14

16


SGB THC

centered

0 5 10 15 20

4-9

English

0.8

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered ToolBorehole Size and Mudweight CorrectionSGB-BA Thorium Response

water

10

12

14

16


SGB THE

Th c

orr /

Th l

og

eccentered

0 5 10 15 20

33


Spectral Gamma Ray Thorium ResponseBorehole Size and Mud Weight Correction

4-10

Metric

0. 0

1. 0

2. 0

3. 0

4. 0

5. 0

6. 0

7. 0

8. 0

9. 0


Centered ToolBorehole Size and Mudweight CorrectionSGB-BA Thorium Response

water

1.2

1.4

1.6

1.8

2.0


SGB THCM

Th c

orr /

Th l

og

0 100 200 300 400 500

centered

0.8

1.0

1.2

1.4

1.6

1.8

2.0


Eccentered ToolBorehole Size and Mudweight CorrectionSGB-BA Thorium Response

water

1.2

1.4

1.6

1.8

2.0


SGB THEM

Th c

orr /

Th l

og

0 100 200 300 400 500

eccentered

34


Spectral Gamma Ray Correction for KCl Mud

0

25

50

75

100

125

150

Eccentered Tool

KCl MudGross Gamma Correction for

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

KCLGE


KC

l Mud

Cor

rect

ion

(Gro

ss G

amm

a A

PI)

% KCl in mud (by weight)

eccentered

0 5 10 15 20

4-11

English

KCl Mud

Gross Gamma Correction for

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

0

25

50

75

100

125

150

175

200


KC

l Mud

Cor

rect

ion

(Gro

ss G

amm

a A

PI)


KCLGC

0 5 10 15 20

centered

35


Spectral Gamma Ray Correction for KCl Mud

0 100 200 300 400 500

0

25

50

75

100

125

150


KC

l Mud

Cor

rect

ion

(Gro

ss G

amm

a A

PI)

Eccentered ToolKCl Mud


2%

4%

6%

8%

10%

12%

14%

16%

18%

20%% KCl in mud (by weight)

KCLGEM

eccentered

4-12

Metric

1000 200 300 400 500


Centered ToolKCl Mud


2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

KCLGCM

0

25

50

75

100

125

150

175

200K

Cl M

ud C

orre

ctio

n (G

ross

Gam

ma

AP

I)

% KCl in mud (by weight)centered

36


Spectral Gamma Ray Potassium ResponseCorrection for KCl Mud

2%

4%

6%

8%

10 %

12 %

14 %

16 %

18 %

20 %% KCl in mud (by weight)

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:

Where

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

Kcorr = CGR (Klog - KCl)

CGR = borehole size and mud weight correction (Kcorr / Klog from chart 4-5) KCl = KCl correction in percent

0

1

2

3

4

5

6

7

8

9

10


KC

l Mud

Cor

rect

ion

(% K

)

centered

0 5 10 15 20

2%

4%

6%

8%

10 %

12 %

14 %

16 %

18 %

20 %% KCl in mud (by weight)

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:

Where




0

1

2

3

4

5

6

7

8

9

10


KC

l Mud

Cor

rect

ion

(% K

)centered

0 5 10 15 20

4-13

English

0

1

2

3

4

5

6

7

8

9

10


KC

l Mud

Cor

rect

ion

(% K

)

Eccentered ToolKCl MudPotassium Correction for

2%

4%

6%

8%

10%

12%

14%

16%

18%


KCLKE

0 5 10 15 20

eccentered

37


Spectral Gamma Ray Potassium ResponseCorrection for KCl Mud

2%

4%

6%

8%

10%

12%

14%

16%

18%


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:

Where




0 100 200 300 400 500

0

1

2

3

4

5

6

7

8

9

10


KC

l Mud

Cor

rect

ion

(% K

)centered

2%

4%

6%

8%

10%

12%

14%

16%

18%


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:

Where




0 100 200 300 400 500

0

1

2

3

4

5

6

7

8

9

10


KC

l Mud

Cor

rect

ion

(% K

)

centered

4-14

Metric

Eccentered ToolKCl MudPotassium Correction for KCLKEM


2%

4%

6%

8%

10

12

14

16

18

20

%

%

%

%

%

%

For KCL mus, begin by determining the borehole corrections (CGR) for hole size and mud weightfrom chart 4-6. Apply the correction for the influence of KCl in the borehole as:

Where

Note — No KCl correction is needed for the Spectral Gamma Ray Uranium or Thorium Response.

Kcor = CGR (Klog - KCl)

KGR = Borehole size and mud weight correction (Kcor / Klog from chart 4-6 KCl = KCl correction in percent

eccentered

0 100 200 300 400 500

0

1

2

3

4

5

6

7

8

9

10


KC

l Mud

Cor

rect

ion

(% K

)

eccentered

Section 5

Resistivity

40

Guidelines for Choosing Induction Logs or Dual Laterologs

Induction tools

30

20

15

10

8.0

6.0

5.0

4.0

3.0

2.0

1.5

1.0

0.5

0.6

0.5

0.4

0.3

0.2

0.1535 30 25 20 15 10 5 0

Dual Laterolog tools

Generally, when Rt/Rm < 3000,induction devices are used.

Rm

f/Rw

Rw =

1.0

ohm

-m

Rw

= 0

.1 o

hm-m

Rw

= 0

.01

ohm

-m

Porosity (%)

Generally, when Rt/Rm > 8000,Dual Laterolog tools are used.

Above the solid line andto the right of appropriate Rw values,

select both logs.

5-1


Mudcake Correction for Micro Spherically Focused Log (MSFL)

1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 901001

2

3

4

5

6

7

89

10

20

30

40

50

60

70

8090

100

Rm

sf c

orr /R

mc

Rmsf/Rmc

200 mm. Borehol

Micro-Spherically Focused

Given: Rmsf = 10 ohm-m, Rmc = 0.5 ohm-m at formation temperature, hmc = 0.25 in.

Enter the x-axis at Rmsf/Rmc = 20 and draw a vertical line to intersect the hmc = 0.25 in. line.

Proceed horizontally to read Rmsf 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.

0 in.

/mm

0.25

in. (

6 m

m)

0.87

5 in

. (22

mm

)

0.75

in. (

19 m

m)

0.5

in. (1

3 m

m)

1.0

in. (

25 m

m)

Mud cake thickness, hmc

41

5-2


42

Rxo from Micro Spherically Focused Log

1 in

. (25

mm

)

4.0

Rmsf /Rmc

Mudcake thickness, hmc

3.0

2.0

1.01 2 3 54 2010 30 40 50 100

Rxo

/R

mc

0.75

in. (

19 m

m)

0.5 in. (13 mm)

0.25 in. (6 mm)

5-3


43


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

1 10 100 1000 4100.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

0.2

6 in. (150 mm)

8 in. (200 mm)

10 in. (255 mm)

12 in. (305 mm)

14 in. (355 mm)

16 in. (405 mm)

Boreholediameter

1 10 100 1000 4100.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

0.2

6 in. (150 mm)

8 in. (200 mm)

10 in. (255 mm)

12 in. (305 mm)

14 in. (355 mm)

16 in. (405 mm)

Boreholediameter

Rt - 6

Rsf

l cor

r/Rsf

lR

sfl c

orr/R

sfl

Rsfl/Rm

Rsfl/Rm

Tool centered in borehole

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

5-4

Borehole Correction for Simultaneous Triple Induction (STI) Tool

–1

0

1

2

3

4

5

6

7

8

9

10

Bor

ehol

e G

eom

etric

al F

acto

r x

1000

45150 200 250 300 350 400 0 500Hole Diameter (mm)

100

4 6 8 10 12 14 16 18 20Hole Diameter (in.)

–15

–10

–5

0

5

10

15

20

25

30

35

40

45

Borehole S

ignal (mm

ho-m)

Hole Signal =

For very low mud restivitiesdivide Rm scale by 10 andmultiply hole signal scale by 10.

Hole Geometrical Factor

Rm

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.

R m (o

hm-m

)

.05

.2

.3.5

1.0

2.0

5.0

1

Deep 1.5-in. (38-mm) standoff

Medium1.5-in. (38-mm) standoff

Deepno standoff

Mediumno standoff

5-5

44


45


Simultaneous Triple Induction (STI) Bed Thickness CorrectionMedium Induction

0.2 0.5 1 2 5 10 20 500.2

0.5

1

2

5

10

20

50R

med

ium

cor

r (o

hm-m

)

Rm

ediu

m c

orr

(ohm

-m)

Rm

ediu

m c

orr

(ohm

-m)

Rmedium from log (ohm-m) Rmedium from log (ohm-m)

Rmedium from log (ohm-m)

Bed thickness = 2 ft (0.6 m)

0.5Rs (ohm-m) 1 2 5 10 20 50

0.2 0.5 1 2 5 10 20 500.2

0.5

1

2

5

10

20

50


0.5 1 2 5 10 20 50

0.2 0.5 1 2 5 10 20 500.2

0.5

1

2

5

10

20

50


0.5 1 2 5 1020

50

Rt - 1

Rs (ohm-m) Rs (ohm-m)

5-6

Bed thickness 2–4 ft (0.6–1.2 m)

Simultaneous Triple Induction (STI) Bed Thickness CorrectionMedium Induction

Rs = 10 ohm-mRs = 4 ohm-m

Rs = 2 ohm-m

Bed Thickness 2–26 ft. (0.6–8 m.) ThickSTI - Medium

0 1 2 3 4 5 6 7 8

Bed Thickness (m)

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

Rs = 1 ohm-m

0.2

0.3

0.5

1

2

4

6810

15

20

30

40

50

0 1 2 3 4 5 6 7 8

Bed Thickness (m)

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6810

15

20

30

40

5060

0 1 2 3 4 5 6 7 8

Bed Thickness (m)

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6810

1520

30

405060708090

0 1 2 3 4 5 6 7 8

Bed Thickness (m)

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6810

1520

30405060

7080

90100

Rt - 2

Rm

ediu

m c

orr

(ohm

-m)

Rm

ediu

m c

orr

(ohm

-m)

Rm

ediu

m c

orr

(ohm

-m)

Rm

ediu

m c

orr

(ohm

-m)



5-7

46


Bed thickness > 4 ft (1.2 m)

47


Simultaneous Triple Induction (STI) Bed Thickness CorrectionDeep Induction

0.2 0.5 1 2 5 10 20 500.2

0.5

1

2

5

10

20

50


Beds 0.6 m - 1.2 m ThickSTI Log-Deep

Simultaneous Triple Induction Bed Thickness Correctio

0.5 1 2 5 10 20 50

0.2 0.5 1 2 5 10 20 500.2

0.5

1

2

5

10

20

50


0.5 1 2 5 10 20 50

0.2 0.5 1 2 5 10 20 500.2

0.5

1

2

5

10

20

50


0.5 1 2 5 1020

50

Rt - 3

Rdeep from log (ohm-m)

Rde

ep c

orr

(ohm

-m)

Rde

ep c

orr

(ohm

-m)

Rde

ep c

orr

(ohm

-m)

Rdeep from log (ohm-m) Rdeep from log (ohm-m)

Rs (ohm-m)

Rs (ohm-m) Rs (ohm-m)

5-8

Bed thickness 2–4 ft (0.6–1.2 m)

Simultaneous Triple Induction (STI) Bed Thickness CorrectionDeep Induction

Bed Thickness 2±26 ft. (0.6±8 m.) ThickSTI - Deep

0 1 2 3 4 5 6 7 8

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6

810

15

20

0 1 2 3 4 5 6 7 8

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6

810

15

20

30

0 1 2 3 4 5 6 7 8

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6810

15

20

30

40

50

0 1 2 3 4 5 6 7 8

0.1

0.2

0.5

1

2

5

10

20

50

100

200

0 4 8 12 16 20 24 28

Bed Thickness (ft)

0.2

0.3

0.5

1

2

4

6810

1520

30

4050607080

Rt - 4

Bed Thickness (m) Bed Thickness (m)

Bed Thickness (m) Bed Thickness (m)



Rde

ep c

orr

(ohm

-m)

Rde

ep c

orr

(ohm

-m)

Rde

ep c

orr

(ohm

-m)

Rde

ep c

orr

(ohm

-m)



5-9

48


Bed thickness > 4 ft (1.2 m)

49


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

2 11 21

2

3

4

5

6

7

8

910

20

30

40

1. .4 1.6 1.8 2.2 2.4

Rsf

l/Rde

ep

Rmedium/Rdeep

1.0

.98

.95.90 .80

.70

.60

.50

.40

2

3

5

7

10

15

20

25

30

15 in

. (40

cm

)20

in. (

50 c

m)

30 in

. (75

cm

)

40 in

. (10

0 cm

)

50 in

. (12

5 cm

)

60 in

. (15

0 cm

)

70 in

. (18

0 cm

)

80 in

. (20

5 cm

)

90 in

. (23

0 cm

)

120

in. (

305

cm)

160

in. (

410

cm)

Invasion diameter

diRxo

Rt

Rt

Rdeep

Frequency = 20 kHzThick beds8-in. (200-mm) borehole

Rxo/Rt

Rt/Rdeep

Rxo/Rm = 20

5-10

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

11

2

3

4

5

6

7

8

910

20

30

40

1.2 1.4 1.6 1.8 2.2 2.4

Rsf

l/Rde

ep

Rmedium/Rdeep

1.0

.98.95

.90 .80.70

.60

.50

2

3

5

7

10

15

20

25

30

15

in. (4

0 c

m)

20 in

. (50

cm

) 30 in

. (75

cm

)

40 in

. (10

0 cm

)

50 in

. (12

5 cm

)

60 in

. (15

0 cm

)

70 in

. (18

0 cm

)

80 in

. (20

5 cm

)

90 in

. (23

0 cm

)

120

in. (

305

cm)

160

in. (

410

cm)

diRxo

Rt

Rt

Rdeep

2

Frequency = 20 kHzThick bedsRxo/Rm = 1008-in. (200-mm) Borehole

Invasion diameter

Rxo/Rt

Rt/Rdeep

Rxo/Rm = 100

5-11

50


51


Borehole Correction for Dual Laterolog (DLL)

1 10 100 1000 4100.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

Borehole correction to RLLs

6 in. (150 mm)

8 in. (200 mm)

10 in. (255 mm)

12 in. (305 mm)

14 in. (355 mm)

16 in. (405 mm)

Hole diameter

1 10 100 1000 4100.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

Borehole correction to RLLd

3.5" (90 mm) Diameter Tool- CenteredDual Laterolog

6 in. (150 mm)

8 in. (200 mm)

10 in. (255 mm)

16 in. (405 mm)

Hole diameter

RLL

d c

orr /R

LLd

RLL

d c

orr /R

LLd

RLLd /Rm

RLLd /Rm

12 in. (305 mm)

14 in. (355 mm)

centered

centered

5-12

Rt and Rxo from Dual Laterolog (DLL)

0.4 0.6 0.8 1 2 4 6 8 10 20 400.2

0.4

0.6

0.8

1

2

4

6

8

10

20

40

60

80

100

LLd - LLs - Rxo

Dual Laterolog - Invasion Correctio

Thick beds8-in. (200-mm) boreholeNo annulusNo transition zoneUse data correctedfor borehole effects

1.1

(0.5 m)

20 in.

1.2

(0.75 m)

30 in.

1.3

(1.0 m)

40 in.

1.4

(1.25 m)

50 in.

60 in.

1.6

80 in.

1.8

(2.5 m)

100 in.

100 in.(2.5 m)

(3.0 m)

120 in.

0.3

0.4

1

1.5

2

3

5

7

10

15

20

30

50

70

100

RLLd /RLLs

RLL

d/R

xo

(1.5 m)

(2.0 m)

60 in.(1.5 m)

40 in.(1.0 m)

20 in.(0.5 m)

R

di

Rt /RLLd

xo /Rt

Rxo /Rt

Rt /RLLd

Invasion diameter

5-13

52


RLLd - RLLs - Rxo

Section 6

Porosity and Lithology

54

Porosity Determination from Sonic Log

40 50 60 70 80 90 100 110 120 130 1400

5

10

15

20

25

30

35

40

Wyllie time average

Raymer-Hunt-Gardner field transform

1

∆t= +

(1-φ)2

∆tma

φ∆tf

Son

ic P

oros

ity, φ

s (%

)

Sonic Travel Time, ∆t (µs/ft)

∆tf = 189 µs/ft

CP

= 1

.1C

P =

1.2

= 1

.3C

P =

1.4

CP

=1.

6

CP∆t

ma =

43.

5 (D

olom

ite)

∆tm

a =

47.6

(Lim

esto

ne)

∆tm

a =

43.

5 (D

olom

ite)

∆tm

a =

55.

5 (S

ands

tone

)

∆tm

a =

47.

6 (L

imes

tone

)

∆tm

a =

55.

5 (S

ands

tone

)

6-1


English

Porosity Determination from Sonic Log

Son

ic P

oros

ity, φ

s (%

)

100 150 200 250 300 350 4000

5

10

15

20

25

30

35

40

& Raymer-Hunt-Garner TransforWiley Time Average Transfor

Porosity vs. Interval Travel TimeBorehole Compensated Soni

Wyllie time average

Raymer-Hunt-Gardner field transform

1

∆t= +

(1-φ)2

∆tma

φ∆tf

∆tf = 620 µs/m

CP

= 1

.1C

P =

1.2

CP

= 1

.3C

P =

1.4

CP

=1.

6

∆tm

a =

182

(San

dsto

ne)∆t

ma =

182

(San

dsto

ne)

∆tm

a =

156

(Lim

esto

ne)

Sonic Travel Time, ∆t (µs/m)

∆tm

a =

143

(Dol

omite

)∆t

ma

= 15

6 (L

imes

tone

)

∆tm

a =

143

(Dol

omite

)

55

6-2


Metric

56

Compensated Neutron Lithology Effect

0 5 10 15 20 25 30 35 400

5

10

15

20

25

30

35

40

Apparent Porosity (%)

Tru

e P

oros

ity (

%)

Litholgy Response for CNT-SA

Dolom

ite

Sands

tone

Limes

tone

6-3


57


Compensated Neutron Standoff Correction

-4

-3

-2

-1

0

1

2

3

4

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

-1.5

-1

-0.5

0

0. 5

1

1.5

2

2.5

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

6-in. borehole

8-in. borehole

1050 15 20 25 30 35 40 45

Apparent Limestone Porosity (p.u.)

1050 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

1050 15 20 25 30 35 40 45 50

0.0 in.

2.0 in.

0.0 in.

0.5 in.

1.0 in.

1.5 in.

2.0 in.

6-4

English

58



-8

-7

-6

-5

-4

-3

-2

-1

0

1050 15 20 25 30 35 40 45

12-in. borehole


Cor

rect

ion

(p.u

.)

0.0 in.0.5 in.1.0 in1.5 in.2.0 in.

10-in. borehole


Cor

rect

ion

(p.u

.)

1050 15 20 25 30 35 40 45

-6

-7

-5

-4

-3

-2

-1

0

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

0.0 in.

2.0 in.

0.0 in.

2.0 in.

6-5

English

59



-12

-10

-8

-6

-4

-2

0

-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1050 15 20 25 30 35 40 45

0.0 in.

0.0 in.

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

2.0 in.

1050 15 20 25 30 35 40 45

0.0 in.

0.0 in.

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

2.0 in.

14-in. borehole

16-in. borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

6-6

English

60



-3

-2

-1

0

1

2

3

4

-1.5

-1

-0.5

0

0.5

1

1.5

2

1050 15 20 25 30 35 40 45

150-mm borehole

200-mm borehole


1050 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

0 mm

0 mm

15 mm

25 mm

35 mm

15 mm25 mm35 mm45 mm

45 mm

0 mm

0 mm


45 mm

6-7

Metric


61


-7

-6

-5

-4

-3

-2

-1

0

-5

-4

-3

-2

-1

0

1

1050 15 20 25 30 35 40 45

1050 15 20 25 30 35 40 45

250-mm borehole

300-mm borehole

Cor

rect

ion

(p.u

.)



Cor

rect

ion

(p.u

.)

0 mm

0 mm

15 mm25 mm35 mm45 mm45 mm

0 mm

0 mm


45 mm

6-8

Metric

62



-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1050 15 20 25 30 35 40 45

0 mm

0 mm


0 mm

0 mm


45 mm

1050 15 20 25 30 35 40 45

350-mm borehole

400-mm borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

45 mm

6-9

Metric

63


Compensated Neutron Mud Weight Correction for Calcite Mud

0

2

4

6

8

10

12

0 5 10 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)

8.345 lb/gal

10 lb/gal

12 lb/gal

14 lb/gal

16 lb/gal

18 lb/gal

8.345 lb/gal

18 lb/gal

6-10

English

0

1

2

3

4

5

6

7

1050 15 20 25 30 35 40 45

1000 kg/m3

1200 kg/m3

1400 kg/m3

1600 kg/m3

1800 kg/m3

2000 kg/m3


Cor

rect

ion

(p.u

.)

cns-13m

2000 kg/m3

1000 kg/m3

Metric

64


Compensated Neutron Mud Weight Correction for Barite Mud

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0 5 10 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)

8.345 lb/gal

8.345 lb/gal

10 lb/gal

12 lb/gal

14 lb/gal

16 lb/gal

18 lb/gal18 lb/gal

6-11

Metric

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0 5 10 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)

cns-14m

1000 kg/m3

1200 kg/m3

1400 kg/m3

1600 kg/m3

1800 kg/m3

2000 kg/m3

1000 kg/m3

2000 kg/m3

English

65


Compensated Neutron Mud Weight Correction for Hematite Mud

-5

-4

-3

-2

-1

0

1


Cor

rect

ion

(p.u

.)

1050 15 20 25 30 35 40 45

8.345 lb/gal

10 lb/gal

12 lb/gal

14 lb/gal

16 lb/gal

18 lb/gal

18 lb/gal

8.345 lb/gal

6-12

English

Metric


cns-15m

1000 kg/m3

1000 kg/m3

1200 kg/m3

1400 kg/m3

1600 kg/m3

1800 kg/m3

2000 kg/m3

1050 15 20 25 30 35 40 45

-4

-3

-2

-1

0

Cor

rect

ion

(p.u

.)

2000 kg/m3

66


Compensated Neutron Mudcake Correction for Calcite Mud

English

Metric

0

0.5

1

1.5

2

2.5

0 5 10 15 20 25 30 35 40 45

0.00 in.

0.00 in.

0.25 in.

0.50 in.

0.75 in.

1.00 in.

1.00 in.


Cor

rect

ion

(p.u

.)

6-13

0

0.5

1

1.5

2

2.5

1050 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)

cns-16m

0 mm

0 mm

10 mm

15 mm

20 mm

25 mm

25 mm

67


Compensated Neutron Mudcake Correction for Barite Mud

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

1050 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)

0.00 in.

0.00 in.

0.25 in.

0.50 in.

0.75 in.

1.00 in.

1.00 in.

0 mm15 mm25 mm35 mm45 mm

6-14

English

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

1050 15 20 25 30 35 40 45


Cor

rect

ion

(p.u

.)

cns-17m

0 mm

0 mm

10 mm

15 mm

20 mm

25 mm

25 mm

Metric

68


Compensated Neutron Mudcake Correction for Hematite Mud

6-16

English

Metric

-7

-6

-5

-4

-3

-2

-1

0


Cor

rect

ion

(p.u

.)

0.00 in.

0.00 in.

0.25 in.

0.50 in.

0.75 in.

1.00 in.

1.00 in.

1050 15 20 25 30 35 40 45

-7

-6

-5

-4

-3

-2

-1

0


Cor

rect

ion

(p.u

.)

cns-18m

0 mm

0 mm

10 mm

15 mm

20 mm

25 mm

25 mm

1050 15 20 25 30 35 40 45

6-15

69


Compensated Neutron Formation Salinity Correction

6-16


SandstoneC

orre

ctio

n (p

.u.)

cns-20

1050 15 20 25 30 35 45

0 kppm NaCl 50 kppm NaCl100 kppm NaCl150 kppm NaCl200 kppm NaCl250 kppm NaCl

250 kppm NaCl

0 kppm NaCl

-3.5

-3

-2.5

-2

-1.5

-1

-.5

0


Co

rre

ctio

n (

p.u

.)

cns-20

1050 15 20 25 30 35 45

-3.5

-3

-2.5

-2

-1.5

-1

-.5

0

cns-19

Limestone


250 kppm NaCl

0 kppm NaCl


Co

rre

ctio

n (

p.u

.)

cns-20

1050 15 20 25 30 35 45

-3.5

-3

-2.5

-2

-1.5

-1

-.5

0

cns-21

Dolomite


250 kppm NaCl

0 kppm NaCl

70


Compensated Neutron Formation Matrix Capture CrossSection Correction

6-17


Co

rre

ctio

n (

p.u

.)

1050 15 20 25 30 35 45

-12

-10

-8

-6

-4

-2

0

+2

cns-23

+ 0 c.u.

+ 0 c.u.

+ 5 c.u.

+10 c.u.

+15 c.u.

+20 c.u.

+25 c.u.

+25 c.u.

Sandstone

cns-22

Limestone


Co

rre

ctio

n (

p.u

.)

1050 15 20 25 30 35 45-12

-10

-8

-6

-4

-2

0

+2

cns-23

+ 0 c.u.

+ 0 c.u.

+ 5 c.u.

+10 c.u.

+15 c.u.

+20 c.u.

+25 c.u.

+25 c.u.

cns-22


Co

rre

ctio

n (

p.u

.)

1050 15 20 25 30 35 45-12

-10

-8

-6

-4

-2

0

+2

cns-23

+ 0 c.u.

+ 0 c.u.

+ 5 c.u.

+10 c.u.

+15 c.u.

+20 c.u.

+25 c.u.

+25 c.u.

cns-22cns-22

Dolomite

71


Compensated Neutron Temperature Correction

0

5

10

15

20

25

30

35

1050 15 20 25 30 35 40 45

75˚F

100˚F

150˚F

200˚F

250˚F

300˚F

350˚F

cns-25


Cor

rect

ion

(p.u

.)

350˚F

0

5

10

15

20

25

30

1050 15 20 25 30 35 40 45

25˚C

50˚C

75˚C

100˚C

125˚C

150˚C

175˚C

175˚C

cns-25m


Cor

rect

ion

(p.u

.)English

Metric

6-18

72


Compensated Neutron Pressure Correction

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

1050 15 20 25 30 35 40 45

14.7 psi

14.7 psi

5000 psi

10,000 psi

15,000 psi

20,000 psi

25,000 psi

25,000 psi


Cor

rect

ion

(p.u

.)

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

1050 15 20 25 30 35 40 45

100 kPa

100 kPa

35,000 kPa

70,000 kPa

105,000 kPa

140,000 kPa

175,000 kPa

175,000 kPa

cns-26m


Cor

rect

ion

(p.u

.)English

Metric

6-19

73


Compensated Neutron Borehole Size and SalinityCorrection

-3

-2.5

-2

-1.5

-1

-0.5

0

10 15 20 25 30 35 40 4550

6-in. borehole

8-in. borehole

0

0.5

1

1.5

2

2.5

3

3.5

1050 15 20 25 30 35 40 45



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)



0 kppm NaCl

250 kppm NaCl

0 kppm NaCl

250 kppm NaCl

6-20

English

74



-6

-5

-4

-3

-2

-1

0

-8

-7

-6

-5

-4

-3

-2

-1

0

1050 15 20 25 30 35 40 45

1050 15 20 25 30 35 40 45

10-in. borehole

12-in. borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)


250 kppm NaCl

0 kppm NaCl

0 kppm NaCl

0 kppm NaCl

50 kppm NaCl100 kppm NaCl150 kppm NaCl200 kppm NaCl250 kppm NaCl

250 kppm NaCl

6-21

English

75



-10

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

14-in. borehole

16-in. borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

1050 15 20 25 30 35 40 45

1050 15 20 25 30 35 40 45

6-22

English

76



0

0.5

1

1.5

2

2.5

3

3.5

1050 15 20 25 30 35 40 45

1050 15 20 25 30 35 40 45-3

-2.5

-2

-1.5

-1

-0.5

0

0.5

150-mm borehole

200-mm borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

6-23

Metric

77



-7

-6

-5

-4

-3

-2

-1

0

-6

-5

-4

-3

-2

-1

0

1050 15 20 25 30 35 40 45

1050 15 20 25 30 35 40 45

250-mm borehole

300-mm borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

6-24

Metric


78


y

-110

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1050 15 20 25 30 35 40 45

1050 15 20 25 30 35 40 45

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

350-mm borehole

400-mm borehole



Cor

rect

ion

(p.u

.)C

orre

ctio

n (p

.u.)

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

0 kppm NaCl

0 kppm NaCl


250 kppm NaCl

6-25

Metric

79


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

–5 0 5 10 15 20 25 30 35 40 45

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

Fresh mud system

CNT-SA vs. COMPENSATED DENSITY

Porosity

Sands

tone

Limesto

ne

Dolom

ite

0

0

5

5

10

10

15

15

20

20

25

25

30

30

35

35

40

40

45

45

–15

–10

–5

0

5

10

15

20

25

30

35

40

45

Neutron Porosity, φN

(% Limestone)

Apparent Matrix Travel Time (∆t maa)Crossplot Porosity (φxp) and

∆tfl = 620 µs/m

Bul

k D

ensi

ty, ρ

b (g

/cm

3 )

Den

sity

Por

osity

, φD (

% L

imes

tone

)

Approximate gas correction

Salt

Anhydrite

ρf = 1.0 g/cm3

6-26

80


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

–5 0 5 10 15 20 25 30 35 40 45

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

CNT-SA vs. COMPENSATED DENSITY

Limesto

ne

Dolom

ite

0

0

5

5

10

10

15

15

20

20

25

25

30

30

35

35

40

45

–15

–10

–5

0

5

10

15

20

25

30

35

40

45

Porosity

Sands

tone

Salt mud system

15

Neutron Porosity, φN (% Limestone)

Den

sity

Por

osity

, φD (

% L

imes

tone

)

Bul

k D

ensi

ty, ρ

b (g

/cm

3 )

Approximate gas correction

Salt

Anhydrite

ρf = 1.1 g/cm3

6-27

81


Porosity and Lithology from Compensated Neutronand Sonic Log

–5 0 5 10 15 20 25 30 35 40 4520

30

40

50

60

70

80

90

100

110

120

Matrix Travel Time ( t map)Crossplot Porosity ( xp) AND

t f1 = 189 s/ fCNS VS SONIC

0

0

5

5

10

10

15

15

20

25

30

3035

35 40

40

Son

ic T

rave

l Tim

e, ∆

t (µs

/ft)


20

Porosity 25

Sandstone (5

5.5)

Limesto

ne (47.6)

Dolom

ite (4

3.5)

∆tf = 189 µs/ft

6-28

English

82


Porosity and Lithology from Compensated Neutronand Sonic Log

–5 0 5 10 15 20 25 30 35 40 45100

150

200

250

300

350

400

Son

ic T

rave

l Tim

e, ∆

t (µs

/m)

t f1 = 620 s/mCNS VS SONIC

Poros

ity

Dolom

ite (1

43)

0

0

5

5

10

10

15

15

20

20

25

2530

30 35

35 40

40

Sandstone (1

82)

Limesto

ne (156)


∆tf = 620 µs/m

6-29

Metric

83


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

20 30 40 50 60 70 80 90 100 110 120

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

Sonic Travel Time, ∆t (µs/ft)

Gypsum

Bul

k D

ensi

ty, ρ

b (g

/cm

3 )

Fresh water

b = 1.0 g/cm3ρSalt

∆tf = 189 µs/ft

San

dsto

ne

Lim

esto

ne

Dol

omite

20

3030

30

20

25

10

15

20

25

15

0

5

10

15

5

10

0

5

0

Por

osity

6-30

English

84


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

50 100 150 200 250 300 350 400

2100

2200

2300

2400

2500

2600

2700

2800

2900

3000

Sonic Travel Time, ∆t (µs/m)

Gypsum

Anhydrite

Bul

k D

ensi

ty, ρ

b (k

g/m

3 )

Fresh water

f = 1000 kg/m3, ∆tf = 620 µs/m

ρ

Salt Sulfur

San

dsto

ne

Lim

esto

ne

25

30

30D

olom

ite

20

30

20

25

10

15

20

25

15

0

5

10

15

5

10

0

5

0

Por

osity

6-31

Metric

85


Spectral Pe Density (SPeD) Photoelectric Correction for Borehole Size

0 2 4 6 8 10 12 14 16

4

6

8

10

12

14

16

18

20

22

(for 0.1 < Ubhf < 10)

Formation U borehole size correction chart

Bor

ehol

e S

ize

(in.)

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

Photoelectric Factor, Pe (barns/electron)

Volumetric Photoelectric Factor, U (barns/cm3)

(for 0.1 < Ubhf < 10)

Pe borehole size correction chart

For Borehole SizePhotoelectric Correctio

Spectral Lithodensity

4

6

8

10

12

14

16

18

20

22

Bor

ehol

e S

ize

(in.)

100

150

200

250

300

350

400

450

500

550

Borehole S

ize (mm

)

Standardcondition

100

150

200

250

300

350

400

450

500

550

Borehole S

ize (mm

)

Standardcondition

6-32

86


Porosity and Lithology from Spectral Pe Density (SPeD) Log

Bul

k D

ensi

ty, ρ

b (g

/cm

3 )

6

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.00 1 2 3 4 5

Photoelectric Factor, Pe (barns/electron)

Fresh Mud, Liquid Filled Holes

Spectral Litho-Density Log

Porosity And Lithology

Anh

ydrit

e

Lim

esto

neS

alt

Dol

omiteS

ands

tone

0

5

10

0

5

10

15

20

25

30

35

40

45

0

5

0

5

10

15

20

25

30

35

40

45

50

0

5

10

15

20

25

30

35

40

Fresh mud, liquid filled holes

Por

osity

6-33

87


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

6 5 4 3 2 1 4 6 8 10 12 14

3.0

2.5

2.0

0

10

20

30

40

UmaaPe

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

Photoelectric Factor Pe, (barns/electron)

Bul

k D

ensi

ty, ρ

b (g

/cm

3 )A

pparent Total P

orosity φt , (%

)

ρb

6-34

88


Matrix Identification Plot

6-35

18

Appa

rent

Vol

umet

ric P

hoto

elec

tric

Fac

tor,

Um

aa (

barn

s/cm

3)

% D

olom

ite

8060

4020

% L

imes

tone

20

40

60

80

% Sandstone

20

40

60

80

Limestone

Dolomite

Sandstone

Gas

Salt

Heavyminerals

16

14

12

10

8

6

4

23.1 3.0 3.0 2.8 2.7 2.6 2.5 2.4 2.3 2.2

Barite

Apparent Matrix Grain Density, ρmaa (g/cm3)

The Matrix Identification Plot can be used to determine the component matrix lithology using the apparentmatrix grain density and the apparent matrix volumetric photoelectric factor.

Where, φ = formation porosity

ρf = 1.0 g/cm3 (fresh water)= 1.1 g/cm3 (salt water)

Uf = 0.398 barns/cm3 (fresh water)

= 1.36 barns/cm3 (salt water)

ρmaa =

ρlog - φρf

1 - φ

Umaa =1 - φ

(Pelog x ρ

log) - (φ x Uf)

Section 7

Pulsed Neutron

90


Determination of Sigma Gas

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

100 1 2 3 4 5 6 7 8 9

Sig

ma

Gas

(Σ g

)

Reservoir Pressure (kpsi)

Determination of sigma_CH4

PND 0

100˚

F

150˚

F

200˚

F250˚ F 300˚ F 350˚ F 400˚ F

7-1

English

Determination of Sigma Gas

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Reservoir Pressure (MPa)

Determination of sigma_CH4

PND 0m

0 10 20 30 40 50 60 70

Sig

ma

Gas

(Σ g

) 50˚ C 75

˚ C 100˚

C125˚ C 150˚ C 175˚ C 200˚ C

91

7-2


Metric

92

Determination of Sigma Water

0 25 50 75 100 125 150 175 200 225 250

0

10

20

30

40

50

60

70

80

90

100

110

120

Equivalent NaCl Concentration (kppm)

Sig

ma

Wat

er (

Σ w)


PND 1

7-3


Neutron Capture Cross Section of Wet Gas

129630 15

0

3

6

9

12

15

Sigma CH4

Sig

ma

Gas

(Σ g

)

Neutron Capture Cross Section of Wet Gas

Gas specific gravity = 0.4

0.5

0.6

0.7

0.8

0.91.0

1.2

1.4

Specific gravity of air = 1.0

PND 2

0 25 50 75 100 125 150 175 200 225 250

0

10

20

30

40

50

60

70

80

90

100

110

120

Equivalent NaCl Concentration (kppm)

Sig

ma

wat

er


PND 1

93

7-4


94

Correction of Sigma Gas for Condensate Content

1050 15

0

5

10

15

20

25

Sigma CH4

Sig

ma

Gas

(Σ g

)

Correction of Sigma gas for Condensate Content

0 10

40100

200

Condensate = 300 bbl/MMcf

PND 3

7-5


Section 8

Miscellaneous

96

Reservoir Permeability Estimate from Log Data –Morris and Biggs Equation

0 5 10 15 20 25 30 35 40 45 50

0

10

20

30

40

50

60

70

80

90

100

Morris and Biggs Equation

Reservoir Permeability Estimate from Log Data

0.1 0.5 1 2 5 10 20 50 100 200 500

1000

2000

5000

10,000

PND 4

Porosity, φ (%)

Sirr

(%

)

Permeability (md)

8-1


Reservoir Permeability Estimate from Log Data –Timur Equation

0

10

20

30

40

50

60

70

80

90

100

Timur EquationReservoir Permeability Estimate from Log Data

0. 1 0.5 1 2 5 10 20 50 100 200

500

1000

2000

5000

10,000

PND 5

0 5 10 15 20 25 30 35 40 45 50


Reservoir Permeability Estimate from Log Data

Porosity, φ (%)

Sirr

(%

)

Permeability (md)

97

8-2


98

Conductivity-Derived-Water-Filled-Porosity

0.01 0.02 0.05 0.1 0.2 0.5 1 2 5 10

0.1

0.2

0.5

1

2

5

10

20

50

100

200

500

1000

Rw (ohm-m)

Ra

(ohm

-m)

Conductivity Derived Water Filled Porosity

1%

2%

3%

4%

5%6%

8%

10%

12%

15%

20%

25%

30%

35%40%

1

2

5

10

20

50

100

200

500

1000

2000

5000

10,000

Con

duct

ivity

, C (

mm

ho-m

)

PND 6

Porosity

8-3


Cement Bond Log Interpretation Chart

6 5 4 3 2

850

290

145

116

8758

10.7

54.

57.

05.

513

.4

Cas

ing

OD

(in

.)C

ompr

essi

ve S

tren

gth

(psi

)

7.6

870

1160

1450

2900

Cas

ing

thic

knes

s(in

.)

181512963

80 70 60 50 40 30 20 15 1.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.5

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

3-ft

spac

ing

mV


210

Atte

nuat

ion

db/ft

99

8-4


English

100

Cement Bond Log Interpretation Chart

15.2

12.7

10.4 7.6

5.1

4000

2000

1000

800

600

400

273

114

178

140

340

Cas

ing

OD

(m

m)

Com

pres

sive

Str

engt

h (k

Pa)

194

6000

8000

104

2-10

4

Cas

ing

thic

knes

s(m

m)

181512963

80 70 60 50 40 30 20 15 1.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.5

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.92

-m s

paci

ng

mV


210

Atte

nuat

ion

db/m

8-5


Metric

Formation Strength Parameter Equations Used in Well Logging Terms

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

Finite values for solids, zero values for fluid, µ =

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

Elastic constants

Definition of Elastic Constants

Elastic constants Interrelation of equationsEquations inwell logging terms

Young’s modulus(1) E =3K + ρv2

s

9K ρv2s

E =

K = ρ )3∆t2 - 4∆t2s c

x 1.34 x 1010( 3∆t2∆t2s c

σ = 1/2 )∆t2 - 2∆t2s c( ∆t2 - ∆t2s c

x 1.34 x 1010ρ

∆t2s

µ =

ρ( )( )3∆t2 - 4∆t2s c

∆t2 - ∆t2s c

∆t2s

x 1.34 x 1010

Bulk modulus(2)

Shear modulus(3)

Poisson’s ratio(4)

K = - s4/3v2cρv2

µ = ρv2s

σ = 1/2v2s

cv2

( )v2s

cv2

( )

− 2

− 1

E =3K + µ

9K µ= 2µ (1 + σ) = 3K (1 - 2σ)

K =3(3µ - E)

Eµ= µ

2(1 + σ)

3(1 - 2σ)=

E

3(1 - 2σ)

µ =9K x E

3KE= 3K

1 - 2σ

2 + 2σ=

E

2 + 2σ

σ =2(3K + µ)

3K - 2µ= =( E

2µ- 1) 3K - E

6K

ρ = bulk density, g/cm3

= shear velocity, ft/s

= shear travel time, µs/fts∆t

vs

= compressional velocity, ft/s

= compressional travel time, µs/ftc∆t

vc

= conversion factor1.34 x 1010

∆v/v

F/AK =

∆1/1

∆d/dσ =

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

F/AE =

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

to compressional stress,

tan S

F/A

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

101

8-6


Formation Strength Parameters

8-7

102


5

She

ar M

odul

us, µ

(x

106 p

si)

4

3

2

1

0

Youn

g’s

Mod

ulus

, E (

x 10

6 psi

)

14

1312

11

109

8

7

6

5

43

21

0.10 0.2 0.3 0.4 0.5Poisson’s Ratio, σ

She

ar M

odul

us, µ

(x

106 p

si)

5

4

3

2

1

00.10 0.2 0.3 0.4 0.5

Poisson’s Ratio, σ

Bulk m

odulus, K (x 10 6 psi)

10

5

2

1

103


Formation Strength Parameters

8-8

Shear Modulus, µ (x 106 psi)

10 5 2.5 2.0 1.5 1.03.0

2.0

1.0

Den

sity

, ρ b

(g/c

m3)

40 50 100 150 200

Shear Transit Time, ∆ts (µsec/ft)

140

100

50

Com

pres

sion

al T

rans

it Ti

me,

∆t c

(µs

ec/f

t)

50 100 150 200

Shear Transit Time, ∆ts (µsec/ft)

40

Pois

son’

s R

atio

, σ

0.0

0.1

0.2

0.3

0.4

0.45

Mineral Identification from Spectral Gamma Ray

8-9

104


Hea

vy th

oriu

m b

earin

g m

iner

als

lllite

Th/

K =

28

Tho

rium

Con

cent

ratio

n, T

h pp

m

20

16

12

3

4

0

0

Potassium Concentration, K%

4321

Sm

ectit

e

Th/K

= 1

2

Kaolinite

Mixed layer clays

Th/K = 3.5

40% Mica line80% Glauconite line

Potassium evaporites

FeldsparTh/K = 0.5

Glauconite

Micas

Th/K = 2

105


Shale Volume from Radioactivity Index

8-10

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

Sha

le V

olum

e (V

sh)

Radioactivity Index

Clavier, et. al.

Larionov (older rocks)Stieber

Larionov (tertiary rocks)

106


Tool Mnemonics

8-11

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




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




UPHS BCS USER Porosity BCS Borehole Comp Sonic

XY 1 XY Signature T1 BCS Borehole Comp Sonic




ABHC Annular Volume Tick BHV Borehole Volume Analysis

ABHT Annular Volume Tab BHV Borehole Volume Analysis

ABHV Annular Volume BHV Borehole Volume Analysis

BHV Total Borehole Volume BHV Borehole Volume Analysis

BHVC Borehole Volume Tick BHV Borehole Volume Analysis

BHVT Borehole Volume Tabular BHV Borehole Volume Analysis

DCAL Differential Caliper BHV Borehole Volume Analysis

NOMI Nominal ID CAI Casing Analysis Instrument

NOMO Nominal OD CAI Casing Analysis Instrument

NOMW Nominal Wall CAI Casing Analysis Instrument

MINR Min Remaining Wall CAI Casing Analysis Instrument

MAXR Max Remaining Wall CAI Casing Analysis Instrument

DIFR Wall Difference CAI Casing Analysis Instrument

PERR % Remaining Wall CAI Casing Analysis Instrument

MNWT Min Wall Thickness CAI Casing Analysis Instrument

Tool Mnemonics

107

8-11



MXWT Max Wall Thickness CAI Casing Analysis Instrument

DFWT Wall Thickness Differential CAI Casing Analysis Instrument

PCWT % Wall Thickness Remaining CAI Casing Analysis Instrument

APII API Tolerance ID CAI Casing Analysis Instrument

APIW API Tolerance Wall CAI Casing Analysis Instrument

TOLW 12.5% Tolerance Wall CAI Casing Analysis Instrument

TOLR 87.5% Wall Remaining CAI Casing Analysis Instrument

BPNO Nom Burst Pressure CAI Casing Analysis Instrument

BPMX Max Burst Pressure CAI Casing Analysis Instrument

BPMN Min Burst Pressure CAI Casing Analysis Instrument

BPGU Gulf Burst Pressure CAI Casing Analysis Instrument

CPNO Nom Collapse Pressure CAI Casing Analysis Instrument

CPMX Max Collapse Pressure CAI Casing Analysis Instrument

CPMN Min Collapse Pressure CAI Casing Analysis Instrument

PIPD Pipe Defect CAI Casing Analysis Instrument

CCLF Collar CAI Casing Analysis Instrument

ODMN Minimum OD CAI Casing Analysis Instrument

ODMX Maximum OD CAI Casing Analysis Instrument

ODAV Average OD CAI Casing Analysis Instrument

CAL3 Aux Caliper CAL Caliper

CALI X Caliper CAL X Caliper

CAL2 Y Caliper CAL Y Caliper

DT Compressional Delta Time 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 Variable Density 5 ft 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 Single Receiver Cement Bond

BI Bond Index CBL Single Receiver Cement Bond

CS Compressive Strength CBL Single Receiver Cement Bond

TT3F Travel Time 3 ft CBL Single Receiver Cement Bond

VDL1 Variable Density 3 ft CBL Single Receiver Cement Bond

108

8-11

Tool Mnemonics



XY1 XY Signature 3 ft CBL Single Receiver Cement Bond

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 Casing Evaluation Survey

ERRB CTSB Errors CES Casing Evaluation Survey

MAXP Max Pad CES Casing Evaluation Survey

MAXT Max Thickness CES Casing Evaluation Survey

MINP Min Pad CES Casing Evaluation Survey

MINT Min Thickness CES Casing Evaluation Survey

PD1 Pad #1 CES Casing Evaluation Survey
















PR1 Raw pad #1 counts CES Casing Evaluation Survey




Tool Mnemonics

109

8-11















TRTX Thickness Baseline CES Casing Evaluation Survey

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 Digital Acoustic Tool

DT1 Delta Time 1 DAR Digital Acoustic Tool







GM Shear Modulus DAR Digital Acoustic Tool

GN1 R1 Gain DAR Digital Acoustic Tool



110

8-11

Tool Mnemonics








ITTC Cmpr Intgr TT DAR Digital Acoustic Tool

ITTS Shear Intrg TT DAR Digital Acoustic Tool

KM Bulk Modulus DAR Digital Acoustic Tool

MPWR Monopole Power DAR Digital Acoustic Tool

MSGD Shear Goodness DAR Digital Acoustic Tool

MSHS Shear Slowness DAR Digital Acoustic Tool

MSTT Micro Sonic TT DAR Digital Acoustic Tool

PHSE Phase DAR Digital Acoustic Tool

PRAT Poisson’s Ratio DAR Digital Acoustic Tool

RCDP RH Cmpr DOL Phi DAR Digital Acoustic Tool

RCLP RH Cmpr LS Phi DAR Digital Acoustic Tool

RCSP RH Cmpr SS Phi DAR Digital Acoustic Tool

RCUP RH Cmpr USR Phi DAR Digital Acoustic Tool

RSDP RH Shear DOL Phi DAR Digital Acoustic Tool

RSLP RH Shear LS Phi DAR Digital Acoustic Tool

RSSP RH Shear SS Phi DAR Digital Acoustic Tool

RSUP RH Shear USR Phi DAR Digital Acoustic Tool

SRAT Slowness Ratio DAR Digital Acoustic Tool

STGD Stoneley Goodness DAR Digital Acoustic Tool

STSL Stoneley Slowness DAR Digital Acoustic Tool

TEMP Temperature DAR Digital Acoustic Tool

TM1 R1 Delta T DAR Digital Acoustic Tool








VOLT Head Voltage DAR Digital Acoustic Tool

WCDP Wyllie Cmpr DOL Phi DAR Digital Acoustic Tool

WCLP Wyllie Cmpr LS Phi DAR Digital Acoustic Tool

WCSP Wyllie Cmpr SS Phi DAR Digital Acoustic Tool

WCUP Wyllie Cmpr USR Phi DAR Digital Acoustic Tool

WF1 R1 LIS Waveform DAR Digital Acoustic Tool

Tool Mnemonics

111

8-11










XTR1 Extra 1 DAR Digital Acoustic Tool



XY1 R1 Signature DAR Digital Acoustic Tool








YMEM Young’s Modulus DAR Digital Acoustic Tool

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

112

8-11

Tool Mnemonics



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 Four Electrode Dipmeter

B Total H Field FED Four Electrode Dipmeter

HDEV Hole Deviation FED Four Electrode Dipmeter

PEC PEC FED Four Electrode Dipmeter

RB Rotation FED Four Electrode Dipmeter

TOTG Total G Field FED Four Electrode Dipmeter

ZACC Z Acceleration FED Four Electrode Dipmeter

GR Gamma Ray GR Gamma Ray

A1 T1R1 3’ Amplitude HBC High Resolution Borehole Sonic

A2 T1R2 3’10 Amplitude HBC High Resolution Borehole Sonic







Attn Attenuation HBC High Resolution Borehole Sonic

BI Bond Index HBC High Resolution Borehole Sonic

CNT1 T1R1 3’ Counter HBC High Resolution Borehole Sonic

CNT2 T1R2 3’10 Counter HBC High Resolution Borehole Sonic






Tool Mnemonics

113

8-11




CS Compressive Strength HBC High Resolution Borehole Sonic

DT Compressional Delta Time HBC High Resolution Borehole Sonic

DTL Lower Delta T Uncompensated HBC High Resolution Borehole Sonic

DTLM Lower Micro DT Uncompensated HBC High Resolution Borehole Sonic

DTM Min Delta T HBC High Resolution Borehole Sonic

DTQ Delta T Quality HBC High Resolution Borehole Sonic

DTU Upper Delta T Uncompensated HBC High Resolution Borehole Sonic

DTUM Upper Micro DT Uncompensated HBC High Resolution Borehole Sonic

DTX Max Delta T HBC High Resolution Borehole Sonic

GN1 T1R1 3’ Gain HBC High Resolution Borehole Sonic

GN2 T1R2 3’10 Gain HBC High Resolution Borehole Sonic







ITT Integrated TRL Time HBC High Resolution Borehole Sonic

MDT Micro Delta T HBC High Resolution Borehole Sonic

MDTM Min Micro Delta T HBC High Resolution Borehole Sonic

MDTQ Micro Delta T Quality HBC High Resolution Borehole Sonic

MDTX Max Micro Delta T HBC High Resolution Borehole Sonic

MITT Micro ITT HBC High Resolution Borehole Sonic

NOI1 T1R1 3’ Noise HBC High Resolution Borehole Sonic

NOI2 T1R2 3’10 Noise HBC High Resolution Borehole Sonic







RCDP Sonic Phi (DL-RH) HBC High Resolution Borehole Sonic

RCLPI Sonic Phi (LS-RH) HBC High Resolution Borehole Sonic

RCSP Sonic Phi (SS-RH) HBC High Resolution Borehole Sonic

RCUP Sonic USR RH Phi HBC High Resolution Borehole Sonic

SPDL Sonic Phi (DL) HBC High Resolution Borehole Sonic

SPHI Sonic Phi (LS) HBC High Resolution Borehole Sonic

SPSS Sonic Phi (SS) HBC High Resolution Borehole Sonic

T1MN T1R1 3’ TT Min HBC High Resolution Borehole Sonic

114

8-11

Tool Mnemonics



T1MX T1R1 3’ TT Max HBC High Resolution Borehole Sonic

TEMP Temperature HBC High Resolution Borehole Sonic

THR1 T1R1 3’ Threshold HBC High Resolution Borehole Sonic

THR2 T1R2 3’10 Threshold HBC High Resolution Borehole Sonic







TM1 T1R1 3’ TT HBC High Resolution Borehole Sonic

TM2 T1R2 3’10 TT HBC High Resolution Borehole Sonic







TMX2 T1R2 3’10 TT Min HBC High Resolution Borehole Sonic

TMX2 T1R2 3’10 TT Max HBC High Resolution Borehole Sonic



TMX4 T1R4 5’ TT Min HBC High Resolution Borehole Sonic

TMX4 T1R4 5’ TT Max HBC High Resolution Borehole Sonic









UPHS Sonic USR Phi HBC High Resolution Borehole Sonic

VOLT Head Voltage HBC High Resolution Borehole Sonic

XY1 T1R1 3’ XY Sig HBC High Resolution Borehole Sonic

XY2 T1R2 3’10 XY Sig HBC High Resolution Borehole Sonic





Tool Mnemonics

115

8-11





DDTD Delta Compression HBC Tension Compression

DXTM Z Acceleration Time HMI High Resolution Micro Imager

GDV GDV Primary HMI High Resolution Micro Imager

GI Guard Current HMI High Resolution Micro Imager

GIQ PADV Quadr. HMI High Resolution Micro Imager

GTOT Total G Field HMI High Resolution Micro Imager

GX X Axis Accelerometer HMI High Resolution Micro Imager

GY Y Axis Accelerometer HMI High Resolution Micro Imager

GZ Z Axis Accelerometer HMI High Resolution Micro Imager

HAZI Tool Azimuth HMI High Resolution Micro Imager

IMG1 Buttons HMI High Resolution Micro Imager

LVDT LVDT Drive HMI High Resolution Micro Imager

MOTI Motor Current HMI High Resolution Micro Imager

MOTV Motor Voltage HMI High Resolution Micro Imager

MTF Magnetic Tool Face HMI High Resolution Micro Imager

NTEM Navigation Temp HMI High Resolution Micro Imager

P0MN PAD 1 Minimum HMI High Resolution Micro Imager

P0MX PAD 1 Maximum HMI High Resolution Micro Imager

P1B7 P1B7 Fast HMI High Resolution Micro Imager



P1R P1R Resistivity HMI High Resolution Micro Imager

















116

8-11

Tool Mnemonics





PAD1 PAD1 Packed HMI High Resolution Micro Imager






PADV PADV in Phase HMI High Resolution Micro Imager

PP Pad Presser HMI High Resolution Micro Imager

RAD1 Radius Pad 1 HMI High Resolution Micro Imager






RB Relative Bearing HMI High Resolution Micro Imager

RHOA Rho Average HMI High Resolution Micro Imager

SQ Seq Count HMI High Resolution Micro Imager

UAZI Pad1 Azi No MDEC HMI High Resolution Micro Imager

UHAZ Tool Azi No MDEC HMI High Resolution Micro Imager

V5 5 V Rail HMI High Resolution Micro Imager

VI Valve Current HMI High Resolution Micro Imager

VREF Gen DAC VRef HMI High Resolution Micro Imager

VRG 14 V Rail HMI High Resolution Micro Imager

VRGN 14 V Rail Neg HMI High Resolution Micro Imager

XTR1 Extra 1 HMI High Resolution Micro Imager




ZAC5 Z Acc 0.02 in. HMI High Resolution Micro Imager

ZACC Z Acceleration Fast HMI High Resolution Micro Imager

ZNOW Z Acceleration Now HMI High Resolution Micro Imager

ZREF Gen DAC Zero Ref HMI High Resolution Micro Imager

AZI1 Pad1 Azimuth HMI High Resolution Micro Imager

B1 Button 1 Measurement HMI High Resolution Micro Imager





Tool Mnemonics

117

8-11























BTOT Total Magnetic Field HMI High Resolution Micro Imager

BX X Axis Magnetometer HMI High Resolution Micro Imager

BY Y Axis Magnetometer HMI High Resolution Micro Imager

BZ Z Axis Magnetometer HMI High Resolution Micro Imager

C14 Diameter 1-4 HMI High Resolution Micro Imager



CTEM Cartridge Temperature HMI High Resolution Micro Imager

DEVI Tool Deviation HMI High Resolution Micro Imager

DMAX Max Diameter HMI High Resolution Micro Imager

DMIN Min Diameter HMI High Resolution Micro Imager

DMP1 DM PAD1 Packed HMI High Resolution Micro Imager






CILD Deep IEL Conductivity IEL Induction Electric Log

RILD Deep IEL Resistivity IEL Induction Electric Log

SN Short Normal IEL Induction Electric Log

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Tool Mnemonics



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 MAN Tool Communication Cart

TEMP Temperature MCC MAN Tool Communication Cart

CPGD Compress. Goodness MDA Monopole Dipole Acoustic

CPSL Compress. Slowness MDA Monopole Dipole Acoustic

DPWR Dipole Power MDA Monopole Dipole Acoustic

DSHG Shear Goodness (D) MDA Monopole Dipole Acoustic

DSHS Shear Slowness (D) MDA Monopole Dipole Acoustic

DT1 DT1 MDA Monopole Dipole Acoustic






Tool Mnemonics

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GD Shear Modulus (D) MDA Monopole Dipole Acoustic

GM Shear Modulus (M) MDA Monopole Dipole Acoustic

GN1 R1 Gain MDA Monopole Dipole Acoustic








GX Shear Modulus (X) MDA Monopole Dipole Acoustic

ITSD Shear Integrated TT (D) MDA Monopole Dipole Acoustic

ITSM Shear Integrated TT (M) MDA Monopole Dipole Acoustic

ITSX Shear Integrated TT (X) MDA Monopole Dipole Acoustic

ITTC Cmpr Integrated TT MDA Monopole Dipole Acoustic

KD Bulk Modulus (D) MDA Monopole Dipole Acoustic

KM Bulk Modulus (M) MDA Monopole Dipole Acoustic

KX Bulk Modulus (X) MDA Monopole Dipole Acoustic

MPWR Monopole Power MDA Monopole Dipole Acoustic

MSGD Shear Goodness (M) MDA Monopole Dipole Acoustic

MSHS Shear Slowness (M) MDA Monopole Dipole Acoustic

MSTT Micro Sonic TT MDA Monopole Dipole Acoustic

PHSE Phase MDA Monopole Dipole Acoustic

PRTD Poisson’s Ratio (D) MDA Monopole Dipole Acoustic

PRTM Poisson’s Ratio (M) MDA Monopole Dipole Acoustic

PRTX Poisson’s Ratio (X) MDA Monopole Dipole Acoustic

RCDP RH Cmpr DOL Phi MDA Monopole Dipole Acoustic

RCLP RH Cmpr LS Phi (M) MDA Monopole Dipole Acoustic

RCSP RH Cmpr SS Phi MDA Monopole Dipole Acoustic

RCUP RH Cmpr USR Phi MDA Monopole Dipole Acoustic

RSDD RH Shear DOL Phi (D) MDA Monopole Dipole Acoustic

RSDM RH Shear DOL Phi (M) MDA Monopole Dipole Acoustic

RSDX RH Shear DOL Phi (X) MDA Monopole Dipole Acoustic

RSLD RH Shear LS Phi (D) MDA Monopole Dipole Acoustic

RSLM RH Shear LS Phi (M) MDA Monopole Dipole Acoustic

RSLX RH Shear LS Phi (X) MDA Monopole Dipole Acoustic

RSSD RH Shear SS Phi (D) MDA Monopole Dipole Acoustic

RSSM RH Shear SS Phi (M) MDA Monopole Dipole Acoustic

RSSX RH Shear SS Phi (X) MDA Monopole Dipole Acoustic

120

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Tool Mnemonics



RSUD RH Shear USR Phi (D) MDA Monopole Dipole Acoustic

RSUM RH Shear USR Phi (M) MDA Monopole Dipole Acoustic

RSUX RH Shear USR Phi (X) MDA Monopole Dipole Acoustic

SRAT Slowness Ratio (M) MDA Monopole Dipole Acoustic

SRTD Slowness Ratio (D) MDA Monopole Dipole Acoustic

SRTX Slowness Ratio (X) MDA Monopole Dipole Acoustic

STGD Stoneley Goodness MDA Monopole Dipole Acoustic

STSL Stoneley Slowness MDA Monopole Dipole Acoustic

TEMP Temperature MDA Monopole Dipole Acoustic

TM1 R1 Delta T MDA Monopole Dipole Acoustic








VOLT Head Voltage MDA Monopole Dipole Acoustic

WCDP Wyllie Cmpr DOL Phi MDA Monopole Dipole Acoustic

WCLP Wyllie Cmpr LS Phi MDA Monopole Dipole Acoustic

WCSP Wyllie Cmpr SS Phi MDA Monopole Dipole Acoustic

WCUP Wyllie Cmpr USR Phi MDA Monopole Dipole Acoustic

WF1 R1 LIS Waveform MDA Monopole Dipole Acoustic








XSHG Shear Goodness (X) MDA Monopole Dipole Acoustic

XSHS Shear Slowness (X) MDA Monopole Dipole Acoustic

XTR1 Extra 1 MDA Monopole Dipole Acoustic



XY1 R1 Signature MDA Monopole Dipole Acoustic





Tool Mnemonics

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YMED Young’s Modulus (D) MDA Monopole Dipole Acoustic

YMEM Young’s Modulus (M) MDA Monopole Dipole Acoustic

YMEX Young’s Modulus (X) MDA Monopole Dipole Acoustic

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 Multi Sensor Caliper

DEVI Deviation MSC Multi Sensor Caliper

DIAV Avg Diameter MSC Multi Sensor Caliper

DIMN Min Diameter MSC Multi Sensor Caliper

DIMX Max Diameter MSC Multi Sensor Caliper

DMNA Min Diameter Arm MSC Multi Sensor Caliper

DMXA Max Diameter Arm MSC Multi Sensor Caliper

ECCE Eccentering MSC Multi Sensor Caliper

ETMP External Temperature MSC Multi Sensor Caliper

GRAY Gray Map MSC Multi Sensor Caliper

GSCL Gray Scale MSC Multi Sensor Caliper

HIGH High Arm MSC Multi Sensor Caliper

HREF Temperature High Ref MSC Multi Sensor Caliper

ID1 Raw Arm Data MSC Multi Sensor Caliper

ID2 Arm # 2 MSC Multi Sensor Caliper










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Tool Mnemonics











































Tool Mnemonics

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IDAV Avg ID MSC Multi Sensor Caliper

IDMN Min ID MSC Multi Sensor Caliper

IDMX Max ID MSC Multi Sensor Caliper

ITMP Internal Temperature MSC Multi Sensor Caliper

LDIA Largest Diameter MSC Multi Sensor Caliper

LREF Temperature Low Ref MSC Multi Sensor Caliper

MNRD Min Radius MSC Multi Sensor Caliper

MXRD Max Radius MSC Multi Sensor Caliper

OVAL Ovality MSC Multi Sensor Caliper

R01 Radius 1 MSC Multi Sensor Caliper


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Tool Mnemonics











































Tool Mnemonics

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RMNA Min Radius Arm MSC Multi Sensor Caliper

RMXA Max Radius Arm MSC Multi Sensor Caliper

126

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Tool Mnemonics



V5 Five Volts MSC Multi Sensor Caliper

XTR1 Extra 1 MSC Multi Sensor Caliper

AVRD Avg Radius MSC Multi Sensor Caliper

BERR Transmission Errors MSC Multi Sensor Caliper

DEVI Deviation MSC Multi Sensor Caliper

DIAV Avg Diameter MSC Multi Sensor Caliper

DIMN Min Diameter MSC Multi Sensor Caliper

DIMX Max Diameter MSC Multi Sensor Caliper

DMNA Min Diameter Arm MSC Multi Sensor Caliper

DMXA Max Diameter Arm MSC Multi Sensor Caliper

MSFC MSF Conductivity MSFL Micro Spherically Focused Log

MSFF MSF Resistivity Fltr MSFL Micro Spherically Focused Log

MSFI MSFC-I (STD) MSFL Micro Spherically Focused Log

MSFO ADC Offset MSFL Micro Spherically Focused Log

MSFR MSF Resistivity MSFL Micro Spherically Focused Log

MSFT Temperature MSFL Micro Spherically Focused Log

MSFV Head Voltage MSFL Micro Spherically Focused Log

MSFV MSFC-V (STD) MSFL Micro Spherically Focused Log

MTHK Thickness MTT Magnetic Thickness

CUT1 High Pass 200 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



ROT Rotation PFI Production Fluid Imaging

SFLG Sampling PFI Production Fluid Imaging

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 Maxim Flowmeter FB/XY/Temp

Tool Mnemonics

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RTMP Raw Temperature PLT Maxim Flowmeter FB/XY/Temp

TEMP Temperature PLT Maxim Flowmeter FB/XY/Temp

UCLX Uncorrected X Caliper PLT Maxim Flowmeter FB/XY/Temp

UCLY Uncorrected Y Caliper PLT Maxim Flowmeter FB/XY/Temp

CAL2 Y Caliper PLT Maxim Flowmeter FB/XY/Temp

CALI X Caliper PLT Maxim Flowmeter FB/XY/Temp

CWFM Flowmeter PLT Maxim Flowmeter FB/XY/Temp

Gas Gas PLT PL Analysis - Zonal

Oil Oil PLT PL Analysis - Zonal

WATE Water PLT PL Analysis - Zonal

DIA Diameter PLT Production Fluid Imaging

MS Master SUB PLT Production Logging Telemetry

MSBV Master SUB BUSV PLT Production Logging Telemetry

MSHV Master SUB HV PLT Production Logging Telemetry

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 Pulsed Neutron Decay

PBGN Near Background PND Pulsed Neutron Decay

PBSR Borehole Ratio PND Pulsed Neutron Decay

RBNF Ratio Burst Near to Far PND Pulsed Neutron Decay

RFIC Far Inelastic to Capture PND Pulsed Neutron Decay

RNBC Burst Near to Capture PND Pulsed Neutron Decay

ROFF Error in fit for Sigma Far PND Pulsed Neutron Decay

ROFN Error in fit for Sigma Near PND Pulsed Neutron Decay

SGBF Far Borehole Sigma PND Pulsed Neutron Decay

SGBN Near Borehole Sigma PND Pulsed Neutron Decay

SGFF Far Formation Sigma PND Pulsed Neutron Decay

SGFN Near Formation Sigma PND Pulsed Neutron Decay

SIGD Departure Sigma PND Pulsed Neutron Decay

SP1 Spectrum trace PND Pulsed Neutron Decay

ACPE AACP Error PND Pulsed Neutron Decay

AUX2 Cartridge Temperature PND Pulsed Neutron Decay

BGF Far Background counts PND Pulsed Neutron Decay

BGN Near Background counts PND Pulsed Neutron Decay

CTSB CTSB Errors PND Pulsed Neutron Decay

FAR Far Counts PND Pulsed Neutron Decay

F1 Far Counts PND Pulsed Neutron Decay

FB1 Bin 7 of 1428 Hz Burst Far PND Pulsed Neutron Decay

128

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Tool Mnemonics


















FS1 Bin 7 of Servo Burst Far PND Pulsed Neutron Decay
















HESC High Energy Slope of Capture Spectra PND Pulsed Neutron Decay

HVFB High Volt FB PND Pulsed Neutron Decay

MLR Mult-Low Beam Current PND Pulsed Neutron Decay

NEAR Near Count Rate PND Pulsed Neutron Decay

N1 Near Count Rate PND Pulsed Neutron Decay

NB1 Bin 7 of 1428 Hz Burst Near PND Pulsed Neutron Decay




Tool Mnemonics

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NB91 Bin 1of 1428 Hz Burst Near PND Pulsed Neutron Decay






NBPS Narrow Burst Pulse Shape PND Pulsed Neutron Decay

NPUL # of Narrow Burst firings per half foot PND Pulsed Neutron Decay

NS1 Bin 7 of Servo Burst Near PND Pulsed Neutron Decay
















PRFS Servo Firing Rate PND Pulsed Neutron Decay

PWM High Volt PWM PND Pulsed Neutron Decay

QUAL Output Quality PND Pulsed Neutron Decay

RATI Ratio Capture PND Pulsed Neutron Decay

RPC Replenish Current PND Pulsed Neutron Decay

RPL Ripple Avg PND Pulsed Neutron Decay

SB11 1428 Hz Spectral Ch 1 Bin 1 PND Pulsed Neutron Decay




130

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Tool Mnemonics



















SB4Q Ratio of SB45 to Output Quality PND Pulsed Neutron Decay

SIGF Sigma Far PND Pulsed Neutron Decay

SIGN Sigma Near PND Pulsed Neutron Decay

SPUL # of Servo Burst Firings per half foot PND Pulsed Neutron Decay

SRC Source Current PND Pulsed Neutron Decay

SS11 Servo Spectral Ch 1 Bin 1 PND Pulsed Neutron Decay



















Tool Mnemonics

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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 Compressional Delta Time Sector Bond®tool Fast Formation Sector Bond

INCL Inclination Sector Bond tool Fast Formation Sector Bond

RelB Relative Bearing Sector Bond tool Fast Formation Sector Bond

TT3F Travel Time 3 ft Sector Bond tool Fast Formation Sector Bond

TT4 Raw TT Sector Bond tool Fast Formation Sector Bond

TT5F Travel Time 5 ft Sector Bond tool Fast Formation Sector Bond

TTC Travel Time CAL Sector Bond tool Fast Formation Sector Bond

TTS1 Travel Time SEC1 Sector Bond tool Fast Formation Sector Bond








VAMP Variable Energy Sector Bond tool Fast Formation Sector Bond

VDL1 Variable Density 3 ft Sector Bond tool Fast Formation Sector Bond

VDL2 Variable Density 5 ft Sector Bond tool Fast Formation Sector Bond

XY1 XY Signature 3 ft Sector Bond tool Fast Formation Sector Bond

XY2 XY Signature 5 ft Sector Bond tool Fast Formation Sector Bond

AAVG Avg Energy Sector Bond tool Fast Formation Sector Bond

AM3F Amplitude 3 ft Sector Bond tool Fast Formation Sector Bond

AM5F Amplitude 5 ft Sector Bond tool Fast Formation Sector Bond

AMAX Max Energy Sector Bond tool Fast Formation Sector Bond

AMIN Min Energy Sector Bond tool Fast Formation Sector Bond

AMP1 Sector #1 Sector Bond tool Fast Formation Sector Bond



Amp4 Raw Amp Sector Bond tool Fast Formation Sector Bond




132

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Tool Mnemonics





AMPC Amplitude Cal Sector Bond tool Fast Formation Sector Bond

ATTN Attenuation Sector Bond tool Fast Formation Sector Bond

BI Bond Index Sector Bond tool Fast Formation Sector Bond

CS Compressive Strength Sector Bond tool Fast Formation Sector Bond

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




Amp4 Raw Amp 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 Compressive Strength Sector Bond tool Sector Bond

DT Compressional Delta Time 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








VAMP Variable Energy Sector Bond tool Sector Bond

Tool Mnemonics

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VDL1 Variable Density 3 ft Sector Bond tool Sector Bond

VDL2 Variable Density 5 ft 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 Six Electrode Dipmeter

ACCZ Z Axis Accelerometer SED Six Electrode Dipmeter

ADZ A/D Zero SED Six Electrode Dipmeter

BHVF Borehole Volume Flag SED Six Electrode Dipmeter

BHVL Borehole Volume SED Six Electrode Dipmeter

CAL1 Caliper 1 SED Six Electrode Dipmeter






CTEM Temperature SED Six Electrode Dipmeter

DIA1 Diameter 1 SED Six Electrode Dipmeter



DREF Develco 5V Reference SED Six Electrode Dipmeter

DXTM Time From Computer SED Six Electrode Dipmeter

HAZI Hole Azimuth SED Six Electrode Dipmeter

HDEV Hole Deviation SED Six Electrode Dipmeter

HV Head Volts SED Six Electrode Dipmeter

MAGX X Axis Magnetometer SED Six Electrode Dipmeter

MAGY Y Axis Magnetometer SED Six Electrode Dipmeter

MAGZ Z Axis Magnetometer SED Six Electrode Dipmeter

P1AZ Pad 1 Azimuth SED Six Electrode Dipmeter

PDH1 Pad 1 High Gain SED Six Electrode Dipmeter






PDL1 Pad 1 Low Gain SED Six Electrode Dipmeter





134

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Tool Mnemonics




PDLV Pad Voltage SED Six Electrode Dipmeter

PP Pad Pressure SED Six Electrode Dipmeter

ROT Rotation SED Six Electrode Dipmeter

TOTG Total G Field SED Six Electrode Dipmeter

TOTH Total H Field SED Six Electrode Dipmeter

ZACC Z Acceleration SED Six Electrode Dipmeter

DC10 Servo 10 Time On SFT Selective Formation Tester

DC9 Servo 9 Time Off SFT Selective Formation Tester

DMIN Time Of Day - min SFT Selective Formation Tester

DSEC Time Of Day - s SFT Selective Formation Tester

DSVO Starting Volume SFT Selective Formation Tester

DVOL Digital Pretest Volume SFT Selective Formation Tester

ETIM Elapsed Time SFT Selective Formation Tester

HOUR Time Of Day - Hours SFT Selective Formation Tester

LCAL Log Cal (Debug) SFT Selective Formation Tester

LZER Log Zero (Debug) SFT Selective Formation Tester

MOTR Motor Voltage SFT Selective Formation Tester

OSGP Sample Pressure x1 SFT Selective Formation Tester

PADA Pad Pressure Absolute SFT Selective Formation Tester

PADP Pad Pressure SFT Selective Formation Tester

QDIG Digital QPG Pressure SFT Selective Formation Tester

QONE QPG Pressure x1 SFT Selective Formation Tester

QPGP QPG Pressure SFT Selective Formation Tester

QPGT QPG Temperature SFT Selective Formation Tester

QPRP QPG Pressure (Raw) SFT Selective Formation Tester

QPRT QPG Temperature (Raw) SFT Selective Formation Tester

RATE Pretest Rate SFT Selective Formation Tester

RSGP Raw Sample Pressure SFT Selective Formation Tester

SGP Sample Pressure SFT Selective Formation Tester

SGPP Digital Sample Pressure SFT Selective Formation Tester

STCC Pretest Rate (Debug) SFT Selective Formation Tester

STOC SMPL Tank Current SFT Selective Formation Tester

SYSP System Pressure SFT Selective Formation Tester

TEMP Temperature SFT Selective Formation Tester

VOL Volume SFT Selective Formation Tester

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

Tool Mnemonics

135

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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


136

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Tool Mnemonics





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 Spontaneous Potential

SP SP SP Spontaneous Potential

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 LS Upper Pe CPS SPeD Spectral Pe Density

NILS LS Noise Index SPeD Spectral Pe Density

NISS SS Noise Index SPeD Spectral Pe Density

PEC Pe Correction SPeD Spectral Pe Density

PEF 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 SS Lower Pe CPS SPeD Spectral Pe Density

SPEF 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

Tool Mnemonics

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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 Simultaneous Triple Induction





DVC1 10K Deep STI Cond. STI Simultaneous Triple Induction



DVR1 10K Deep STI STI Simultaneous Triple Induction



HDV Head Voltage STI Simultaneous Triple Induction

MD1R 10K Medium R STI Simultaneous Triple Induction

MD1X 10K Medium X STI Simultaneous Triple Induction





MVC1 10K Medium STI Cond. STI Simultaneous Triple Induction



MVR1 10K Medium STI STI Simultaneous Triple Induction



RD1R RCAL R STI Simultaneous Triple Induction

RD1X RCAL X STI Simultaneous Triple Induction

RWA RWA STI Simultaneous Triple Induction

SFL4 SFL 4 FT Resolution STI Simultaneous Triple Induction

SFLE SFL E (RAW) STI Simultaneous Triple Induction

138

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Tool Mnemonics



SFLI SFL I (RAW) STI Simultaneous Triple Induction

SFLR SFL Resistivity STI Simultaneous Triple Induction

SFLU SFL Raw Resistivity STI Simultaneous Triple Induction

TEMP Temperature STI Simultaneous Triple Induction

XD1R XCAL R STI Simultaneous Triple Induction

XD1X XCAL X STI Simultaneous Triple Induction

ZD1R Zero R STI Simultaneous Triple Induction

ZD1X Zero X STI Simultaneous Triple Induction

DTEN Delta Tension TEN Tension

TENS Tension TEN Tension

ACCX X Accelerometer WCS Wireline Communication System

ACCY Y Accelerometer WCS Wireline Communication System

ACCZ Z Accelerometer WCS Wireline Communication System

INCL Inclination WCS Wireline Communication System

ITMP Internal Temp WCS Wireline Communication System

MDAC Modem DAC WCS Wireline Communication System

MFRQ Modem Frequency WCS Wireline Communication System

MVCO Modem VCO WCS Wireline Communication System

OVPC OV Protect Current WCS Wireline Communication System

PRIN Post Reg Input WCS Wireline Communication System

RELB Relative Bearing WCS Wireline Communication System

WCSS WCS Status WCS Wireline Communication System

WITB WCS ITB Voltage WCS Wireline Communication System

WTLI Tool Current WCS Wireline Communication System

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 Nuclear Magnetic Resonance Tool

MPHI Effective Porosity NMRT Nuclear Magnetic Resonance Tool

MCBW Clay Bound Water NMRT Nuclear Magnetic Resonance Tool

MPHS Total Porosity NMRT Nuclear Magnetic Resonance Tool

MCTF Free Fluid Index Cutoff NMRT Nuclear Magnetic Resonance Tool

MCTC Clay Bound Water Cutoff NMRT Nuclear Magnetic Resonance Tool

PM90 Permeability (Murtsovkin 90% Porosity) NMRT Nuclear Magnetic Resonance Tool

PM98 Permeability (Murtsovkin 98% Porosity) NMRT Nuclear Magnetic Resonance Tool

PMT Permeability (Timur) NMRT Nuclear Magnetic Resonance Tool

PMTC Permeability (Timur/Coates) NMRT Nuclear Magnetic Resonance Tool

PMK Permeability (T2 model) NMRT Nuclear Magnetic Resonance Tool

TM90 T2 - 90% Porosity NMRT Nuclear Magnetic Resonance Tool

Tool Mnemonics

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BP1 Bin Porosity 2-4 ms NMRT Nuclear Magnetic Resonance Tool










SPDP T2 Spectrum NMRT Nuclear Magnetic Resonance Tool

SPIP Cumulative Spectrum T2 NMRT Nuclear Magnetic Resonance Tool

TFPP First Point T2 NMRT Nuclear Magnetic Resonance Tool

TLPP Last Point T2 NMRT Nuclear Magnetic Resonance Tool

TSPP Logarithmic Step of T2 Spectrum NMRT Nuclear Magnetic Resonance Tool

NPTP Number of Points of T2 Spectrum NMRT Nuclear Magnetic Resonance Tool

ALPP Regularization Parameter NMRT Nuclear Magnetic Resonance Tool

SPPP Incremental Spectrum T2 NMRT Nuclear Magnetic Resonance Tool

TFPX First Point T2 of Incr. Spectrum NMRT Nuclear Magnetic Resonance Tool

TSPX Logarithmic Step of Incr. Spectrum NMRT Nuclear Magnetic Resonance Tool

NPTX Number of Points of Incr. Spectrum NMRT Nuclear Magnetic Resonance Tool

SPDC T2 Spectrum NMRT Nuclear Magnetic Resonance Tool

SPIC Cumulative Spectrum Clay NMRT Nuclear Magnetic Resonance Tool

SPPC Incremental Spectrum Clay NMRT Nuclear Magnetic Resonance Tool

TFPC First Point T2 of Clay Spectrum NMRT Nuclear Magnetic Resonance Tool

TLPC Last Point T2 of Clay Spectrum NMRT Nuclear Magnetic Resonance Tool

TSPC Logarithmic Step of Clay Spectrum NMRT Nuclear Magnetic Resonance Tool

TSPC Logarithmic Step of Clay Spectrum NMRT Nuclear Magnetic Resonance Tool

NPTC Number of Points Clay Spectrum NMRT Nuclear Magnetic Resonance Tool

ALPC Regularization Parameter (clay) NMRT Nuclear Magnetic Resonance Tool

Chart Book Wft037399

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Transcript of Chart Book Wft037399