Curve Type Codes




Log Type

Code

Code

Curve Type

Units

(Base Log)

10

Self Potential

millivolt

1

30

Single Point Resistivity

ohm metre

1

40

Short Normal

ohm metre

1

41

Short Normal, Amplified

ohm metre

1

60

Long Normal

ohm metre

1

61

Long Normal, Amplified

ohm metre

1

69

Ultra Long Normal

ohm metre

4

70

Lateral

ohm metre

1

71

Lateral Amplified

ohm metre

1

80

Limestone

ohm metre

1

110

Induction Conductivity

millisiemen/metre

5

111

Induction Conductivity Amplified

millisiemen/metre

5

120

Induction Resistivity

ohm metre

5

121

Induction Resistivity Amplified

ohm metre

5

130

Attenuation

decibel/metre

9

132

Dielectric Constant

farads/metre

9

134

Electromagnetic Propagation

nanoseconds/metre

9

150

Collar Locator

86

152

Pipe Analysis

86

180-195

Local Option

210

Focused Conductivity

millisiemen/metre

10

211

Focused Conductivity Amplified

millisiemen/metre

10

220

Focused Resistivity

ohm metre

10

221

Focused Resistivity Amplified

ohm metre

10

222

Focused Resistivity, Averaged

ohm metre

10

250

Inverse (1")

ohm metre

15

252

Normal (2")

ohm metre

15

260

Micro-Focused, Conductivity

millisiemen/metre

20

270

Micro-Focused, Resistivity

ohm metre

20

280

Caliper

millimetre

70

282

Bit Size

millimetre

70

310

Gamma Ray

API Unit

35

330

Neutron

API Unit

35

334

Neutron Detector Count Rate

becquerel (Bq)

35

(count/sec.)

350

Density

kilograms/cubic

45

metre

351

Density Difference

kilograms/cubic

47

metre

354

Density Detector Count Rate

becquerel

45

356

Density Correction

kilograms/cubic

45

metre

357

Atomic Number (Z)

45

358

Photoelectric Cross Section (U)

45

390

Near Detection Count Rate

becquerel

51

391

Far Detection Count Rate

becquerel

51

400

Capture Cross Section

1/metre

51

410

Decay Time

microsecond or

51

millisecond

420

Ratio

51

430

Monitor

counts/calibration

9

division

500

Acoustic Velocity

metre/second

60

501

Acoustic Velocity, Long Spaced,

metre/second

60

> 7'

520

Acoustic Interval Transit Time,

microsecond/metre

60

Compressional Wave, Compensated

(i.e., BHC)

522

Acoustic Interval Transit Time,

microsecond/metre

60

Compressional Wave, Non-Compensated

523

Acoustic Interval Transit Time,

microsecond/metre

60

Compressional Wave Long Spaced,

> 7'

524

Acoustic Ampiitude, Compressional

millivolt

60

Wave (i.e., Amplitude for Cement

Bond Log)

528

Integrated Time Compressional

second

60

Wave, Long Spaced, > 7'

529

Integrated Time, Compressional

second

60

Wave

530

Acoustic Interval Transit Time,

microsecond/metre

60

Wave other than Compressional,

Compensated

532

Acoustic Interval Transit Time,

microsecond/metre

60

Wave other than Compressional,

Non-Compensated

534

Acoustic Amplitude, Wave other

millivolt

60

than Compressional

539

Integrated Time, Wave other than

second

60

Compressional

545

Noise Curve

millivolt

68

580-595

Local Option

610

Dipmeter Contact Electrodes

75

611

Dip

degree

75

615

Acceleration

75

620

Hole Deviation

degree

76

630

Hole Azimuth

degree

76

631

Hole Relative Bearing

degree

76

632

Tool Azimuth

degree

76

635

Tension

636

Log Speed Indicator

metre/hour

82

640

Flow Rate

cubic metre/hour

82

650

Fluid Density

kilograms/cubic

84

metre

660

Temperature

degree Celsius

80

670

Free Fluid Index

volume fraction

29

671

Thermal Relaxation, Time T1

millisecond

29

672

Transverse Relaxation, Time T2

millisecond

29

700

Total Counts

52

701

Hydrogen

52

702

Helium

52

706

Carbon

52

708

Oxygen

52

712

Magnesium

52

713

Aluminum

52

714

Silicon

52

716

Sulphur

52

717

Chlorine

52

719

Potassium

52

720

Calcium

52

726

Iron

52

728

Nickel

52

729

Copper

52

790

Thorium

52

792

Uranium

52

793

Carbon/Oxygen

52

794

Calcium/Silicon

52

795

Silicon/Calcium

52

796

Silicon/Oxygen

52

810

Drilling Rate

metre/hour

90

811

Drill String Force

decanewton

90

812

Rotary

see curve class

90

814

Pressure Gradient

pascals/metre

96

819

Mud Hydraulics

see curve class

91

820

Mud Composition

volume fraction

91

821

Mud Weight

kilogram/cubic metre

91

822

Viscosity

see curve class

91

823

Mud Resistivity

ohm metre

91

824

Mud Salinity

kilogram/cubic metre

91

825

Mud Filtrate Loss

91

826

Acidity/Alkalinity

see curve class

91

827

Mud Oil Shows

91

828

Tracer

91

830

Hydrocarbons

91

831

Methane

volume fraction

91

832

Ethane

volume fraction

91

833

Propane

volume fraction

91

834

Iso-Butane

volume fraction

91

835

Normal-Butane

volume fraction

91

836

Iso-Pentane

volume fraction

91

837

Normal Pentane

volume fraction

91

838

Hexane

volume fraction

91

841

Carbon Dioxide

volume fraction

91

842

Hydrogen Sulfide

volume fraction

91

850

Lithology

volume fraction

92

851

Lithology, Integrated

metres

92

855

Lithology Indicator

94

856

Lithology Indicator, Integrated

metres

94

860

Shale

volume fraction

94

861

Shale, Integrated

metres

94

862

Clay

volume fraction

94

863

Clay, Integrated

metres

94

864

Shale Property

92

865

Shale Property

metres

92

870

Coal Analysis

volume fraction

92

871

Coal Analysis, Integrated

metres

92

873

Coal Property

92

874

Coal Property, Integrated

metres

92

875

Sample Density

kilograms/cubic

92

metre

876

Sample Density, Integrated

92

880

Texture, Measured

92

881

Texture, Estimated

92

885

Modulus, Measured

gigapascal

92

886

Modulus, Computed

gigapascal

92

887

Consolidation

92

890

Porosity

volume fraction

92

891

Porosity, Integrated

metres

92

895

Absolute Permeability, Inert Gas

millidarcies (md) =

92

0.001 micrometre^2

896

Absolute Permeability, Inert Liquid

millidarcies

92

897

Relative Permeability, Non-Wetting

millidarcies

92

Phase

898

Relative Permeability, Wetting

millidarcies

92

Phase

899

Permeability Index

millidarcies

94

900

Permeability Index, Integrated

md metres

94

905

G-Factor from Thomeer

92

910

Water Saturation

porosity fraction

92

911

Water Saturation, Integrated

metres

92

912

Bulk Weight Water, Wet

92

913

Bulk Weight Water, Dry

92

920

Hydrocarbon Saturation

porosity fraction

92

921

Hydrocarbon Saturation, Integrated

metres

92

922

Bulk Weight Hydrocarbon, Wet

92

923

Bulk Weight Hydrocarbon, Dry

92

930

Hydrocarbon Shows

92

935

Resistivity, Computed

ohm metre

94

936

Resitivity, Corrected

ohm metre

94

937

Conductivity, Computed

millisiemen/metre

94

938

Conductivity, Corrected

millisiemen/metre

94

940

Formation Factor

92

945

Petrophysical Constants

92

950

Density x Velocity

gigapascal sec/metre

94

951

Reflection Coefficient

94

960

True Vertical Depth

metres

94

970-995

Local Option

95