1 - Well Log Mnemonics [PDF]

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Well Log Mnemonics Mnemonics

Description

ABC

Acoustic Borehole Compensated

AIT

Array Induction Tool

AO

AIT Log With 1 Ft Vertical Resolution

AO10

AIT Log With 1 Ft Vertical Resolution

AO90

AIT Log With 1 Ft Vertical Resolution

APS EPI POR LS COR Accelerator Porosity Sonde Epithermal Porosity L ASN

Amplified Short Normal

AT

AIT Log With 2 Ft Vertical Resolution

ARI

Azimuthal Resistivity Imager

BCA

Borehole Compensated Acoustic

BCN

Borehole Compensated Neutron Log

BCS

Borehole Compensated Sonic

BGT

Borehole Geometry Log

BHC

BHC Acoustilog

BHC

BHC Sonic Log

BHGM

Borehole Gravity Meter

BMIN

Microresistivity

BMNO

Microresistivity

BRD

Bed Resolution Density

BS

Bit Size

BSAL

Borehole Salinity

CA3

Caliper

CA6

Caliper

CAL

Caliper

CAL

Caliper

CAL

Caliper

CALI

Caliper

CAL

Caliper

CALS

Sonic Caliper

CAVL

Compensated Acoustic Velocity Log

CCL

Casing Collar Locator

CDL

Compensated Density Log

CDL

Compensated Density Log

CDL

Compensated Density Log

CDL

Compensated Density Log

CDN

Compensated Density Neutron Tool

CDR

Continuous Directional Survey

CDS

Continuous Deviation Survey

CDS

Continuous Directional Survey

CGR

Computed Gamma Ray

CGSL

Capture Gamma Spectral Log

CHES

Cased Hole Evaluation

CIDP

Phasor Processed Deep Conductivity

CLASS

Clay Analysis And Shaly Sand Evaluation

CLAYS

Clay Analysis

CLSD

Compensated Long Spacing Density

CMR

Combinable Magnetic Resonance Tool

CMS

Circumferential Microsonic

CNL

Compensated Neutron Log

CNL

Compensated Neutron Log N-T

CNLog

Compensated Neutron Log N-T And N-E

CNS

Compensated Neutron Survey N-T

COC

Spectralog Carbon Oxygen Log

CONC

Contact Caliper Log

COR

Carbon Oxygen Ratio

CMR

Combinable Magentic Resonance Tool

CRA

Prolog Complex Reservoir Analysis

CSF

Continuous Spinner Flowmeter

CSNG

Compensated Spectral Natural Gamma Log

CSNG

Compensated Spectral Natural Gamma Log

DBC

Density / Borehole Compensated

DCAL

1D Caliper

DCL

Dielectric Constant Log

DCL

Dielectric Constant Log

DDFG

Dual Dynamically Focused Guard Log

DEL

Dielectric Log

DF

Fluid Density Log

DGFL

Dual Guard Forxo Log

DGL

Dual Guard Log

DHD

Dual Dipmeter

DHL

Deviated Hole Logging System

DIFL

Dual Induction Focused Log

DIFL

Dual Induction Focused Log

DIGL

Dual Induction Guard

DIL

Dual Induction Resistivity

DIL

Dual Induction Log

DIP

Resistivity Dip Log

DIRSID

Directional Survey

DISN

Dual Induction Short Normal Log

DL

Density Log

DLL

Dual Laterolog

DLL

Dual Laterolog

DLL

Dual Laterolog

DNL

Dual Spaced Neutron N-T

DNLL

Dual Detector Neutron Lifetime Log

DNP

Dual Compensated Neutron N-T And N-E

DPHI

Density Porosity

DPO

Lds Density Porosity

DPT

Deep Propagation Log

DRHO

Delta Rho

DSI

Shear, Compressional, And Stoneley Waves

DSI

Dual Spaced Induction

DSL

Digital Sonic Log

DSN

Dual Spaced Neutron Log N-T

DT

Delta Transit Time

DTCO

Delta Transit Time Compressional

DTL

Differential Temperature Log

DTSM

Delta Transit Time Shear Measurement

DTST

Delta Transit Time Stoneley Wave

EL

Electric Log

ELREC

Electric Log Salt Dome Profile

EMC

Micro Contact Caliper

ENP

Epithermal Neutron Log N-E

EPT

Electromagnetic Propagation Log

ES

Electric Log

FCL

FoRxo Caliper Log

FDC

Formation Density Log Compensated

FDL

Formation Density L

FDL

Fracture Detection Log

FE

Focused Electric

FED

Dipmeter

FF

Fracture Finder

FIL

Fracture Identification Log

FIT

Formation Interval Tester

FMT

Formation Multitester

FPL

Fracture Profile Log

FRAC

Fracture Analysis

FWAL

Full Wave Acoustic Log

GCL

Continuous Guidance Log

GDS

Guard Log

GFL

Guard - FoRxo

GL

Guard Log

GL

Guard Log

GR

Gamma Ray

GRB

Gamma Ray Backup

GST

Gamma Spectrometry Log

GST

Gamma Spectrometry Log

HCGR

Hostile Natural Gamma Ray Sonde Computed Ga

HDT-E

High Resolution Digital Dipmeter

HLDT

Hostile Environment Lithodensity Tool

HRC

Hard Rock Coring Tool

HRD

High Resolution Density

HRDIP

Hi Resolution 4 Arm Diplog

HRT

High Resolution Thermometer

HSGR

Hostile Natural Gamma Ray Sonde Standard Gamma Ray

IDER

Enhanced Phasor Processed Deep Resistivity

IEL

Induction Electric

IEL

Induction Electric Log

IES

Induction Electric

IL

Induction Log

ILD

Deep Induction Standard Processed Resistivity

ILM

Medim Induction Standard Processed Resistivity

IMER

Enhanced Phasor Processed Medium Resistivity

IS

Induction

ISF

ISF Induction Log

L

Laterolog

LCRA

Lithology Complex Reservoir Analysis

LDS

Lithodensity

LDT

Litho Density Compensated

LDT-CNL

Lithodensity / Compensated Neutron Log

LL

Laterolog

LLD

Laterolog Deep

LLS

Laterolog Shallow

LN

Long Normal 64"

LSAL

Long Spaced Acoustic Velocity Log

LSBHC

Long Spaced Bhc Acoutilog

LSD

Long Spacing Density

LSS

Long Spaced Sonic

LSS

Long Spaced Sonic

MCS

Multichannel Sonic

MEL

Micro Electric Log

MIS

Magnetic Inclinometer Survey

ML

Minilog

ML

Microlog

MLL

Micro Resistivity

MLL

Micro Laterolog

MLL

Microlaterolog

MRIL

Magnetic Resonance Imaging Log

MSF

Microspherically Focused Log

MSFL

Microsfl Resistivity

MSFL

Microresistivity

MSFL

Micro SFL

MSG

Microseismogram

MST

Multiset Tester

NBC

Neutron Borehole Compensated N-T

NGS

Natural Gamma Ray Spectrometry Log

NGS

Natural Gamma Ray Spectrometry Log

NGS

Natural Gamma Ray Spectrometry Log

NL

Neutron Log N-Gamma And N-E, N-T

NL

Neutron Log N-Gamma

NL

Neutron Log N-Gamma And N-T

NLL

Neutron Lifetime Log

NML

Nuclear Magnetism Log

NML

Nuclear Magnetism Log

NMR

Nuclear Magnetic Resonance

NN

Neutron N-T

NPHI

Neutron Porosity

NPOR

Neuton Porosity

NPLT

Nuclear Porosity Lithology Tool

PCD

Powered Caliper Device

PE

Photoelectric

PEF

Photoelectric Effect

PEFL

Photoelectric Effect Long

PEFS

Photoelectric Effect Short

PHIE

Porosity

PHILC

Accelerator Porosity Sonde Epithermal Porosity L

PHIN

Neutron Porosity

PL

Pressure Log

PL

Proximity Log

PML

Proximity Minilog

PNL

Pulse Neutron Log

POTA

Potassium Curve

PTL

Precision Temperature Log

RFT

Repeat Formation Tester

RHOB

Bulk Density

RMA

Radioactive Mineral Analysis

RX0

Microresistivity

SAND

Prolog Sandstone Analysis

SCCL

Shale Compensated Chlorine Log

SDA

Stratadip Analysis

SDL

Spectral Density Log

SDS

Slimline Dipmeter Survey

SF

Spherically Focused Log

SFAL

Sonic Formation Amplitude Log

SFL

Spherically Focused Log

SFL

Spherically Focused Log

SFLU

Spherically Focused Log, Unaveraged

SFT

Select Formation Tester

SFT

Sequential Formation Tester

SGR

Spectroscopy Gamma Ray

SGR

Spectral Gamma Ray

SGR

Spectral Gamma Ray

SL-A

Amplitude Log

SL-WFP

Wave Train Display

SN

Short Normal Resistivity

SNL

Sidewall Neutron Log N-E

SNP

Sidewall Neutron Log N-E

SP

Spontaneous Potential

SPHI

Sonic Derived Porosity Curve

SPL

Spectral Gamma Ray

SS

Seismic Spectrum

SS

Synthetic Seismogram

SWA

Sidewall Acoustic Log

SWC

Sidewall Coring

SWD

Core Gun

SWN

Sidewall Epithermal Neutron N-E

SWN

Sidewall Neutron Log N-E

TCR

Quantitative Tracer Survey

TDT

Thermal Decay Time Log

TENS

Tension

THOR

Thorium Curve

TL

Temperature Log

TL

Temperature Log

TLD

Differential Temperature Log

TMD

Thermal Multigate Decay Log

TRF

Well Treatment Profile

TRP

Radioactive Tracer Log

TS

Temperature / Differential Temperature

TVD

True Vertical Depth

ULSEL

Electric Log Salt Dome Profile

URAN

Uranium Curve

V3D

3-D Velocity Log

VDL

Variable Density Log

VDL

Variable Density Log

VSP

Vertical Seismic Profile

WSR

Well Seismic Record

WSS

Wellbore Sibilation Survey

XYC

X-Y Caliper

Company

Notes

Birdwell

Schlumberger

AIT - Array Induction Tool, Resistivity Image Showing Bedding, HC Content, Invasion Features

Schlumberger

AIT - Array Induction Tool, Resistivity Image Showing Bedding, HC Content, Invasion Features, 10 Inch Depth

Schlumberger

AIT - Array Induction Tool, Resistivity Image Showing Bedding, HC Content, Invasion Features, 90 Inch Depth

Schlumberger Schlumberger Schlumberger Schlumberger

BPD Instruments NL Mccullough Gearhart Schlumberger Dresser Atlas Schlumberger Edcon

BPD Instruments

Birdwell Birdwell

Birdwell Gearhart Generic

See AO

Welex

Welex Schlumberger BPD Instruments Dresser Atlas Gearhart Welex Schlumberger Schlumberger BPD Instruments Gearhart Schlumberger Welex Dresser Atlas Schlumberger Dresser Atlas Dresser Atlas BPD Instruments Schlumberger Schlumberger Schlumberger Schlumberger Dresser Atlas Gearhart Dresser Atlas Welex Schlumberger Schlumberger Dresser Atlas Dresser Atlas Welex Welex

Birdwell Schlumberger Gearhart Welex Welex Dresser Atlas Birdwell Welex Welex Schlumberger Schlumberger Dresser Atlas Welex Welex Schlumberger Welex Welex Dresser Atlas Welex Gearhart Dresser Atlas Gearhart Schlumberger BPD Instruments Dresser Atlas Schlumberger Schlumberger Schlumberger Schlumberger Schlumberger Schlumberger Bpb

Schlumberger Welex Generic

Gearhart

Dresser Atlas, Schlumberger, Welex Gearhart Birdwell BPD Instruments Schlumberger Birdwell

Welex Schlumberger Birdwell Gearhart BPD Instruments Gearhart Welex Schlumberger Schlumberger Dresser Atlas Welex Dresser Atlas Welex

Schlumberger Birdwell Welex Gearhart Welex

Investigates Flushed Zone; Pad; 1.1 Ghz

All

Schlumberger Schlumberger

Schlumberger Schlumberger Schlumberger Gearhart BPD Instruments Dresser Atlas Schlumberger

Schlumberger Gearhart Welex Birdwell Gearhart, Schlumberger Schlumberger Schlumberger Schlumberger Birdwell Schlumberger

Schlumberger Dresser Atlas Schlumberger Schlumberger

Dresser Atlas

Linear Scale Log Scale / Part Of Dual Laterolog Log Scale / Part Of Dual Laterolog

Schlumberger

Welex Dresser Atlas BPD Instruments Gearhart Schlumberger

BPD Instruments Gearhart Birdwell Dresser Atlas Schlumberger BPD Instruments Gearhart Schlumberger Numar Gearhart Schlumberger

Schlumberger Welex Welex

Birdwell Schlumberger Schlumberger Schlumberger Birdwell Schlumberger Welex Dresser Atlas Dresser Atlas Schlumberger Schlumberger

See AO / Often Part Of Dual Laterlog Combination / Log Scale

BPD Instruments

Schlumberger

Schlumberger Generic Schlumberger Schlumberger Schlumberger Schlumberger

See AO

Schlumberger Generic Birdwell Generic Dresser Atlas Generic

Used In Cased Hole

Schlumberger Welex

Schlumberger Schlumberger Dresser Atlas Generic

Dresser Atlas NL Mccullough Dresser Atlas

BPD Instruments Gearhart Gearhart Schlumberger

Dual Induction SFL Array Resistivity At 3 Depths

Schlumberger Schlumberger Gearhart Welex Schlumberger Gearhart Gearhart Schlumberger Schlumberger Generic Gearhart Schlumberger Schlumberger

Detect Permeable Beds, Bedding Boundaries, Formation Water Resistivity, And Volume Of Shale In Permeable Beds

Generic Spectralog Gearhart Dresser Atlas Dresser Atlas Welex Birdwell Dresser Atlas Welex

Crc Wireline Schlumberger Schlumberger Schlumberger Birdwell Gearhart Birdwell Welex Birdwell Birdwell

Cased Hole Log Detects HC Buildups Behind Pipe

BPD Instruments Dresser Atlas

Schlumberger

Birdwell Dresser Atlas Schlumberger Dresser Atlas

Schlumberger Birdwell

Gearhart

Functions

Short Function

Typical Scale Range

Acoustic Transit Time

Porosity

Conductivity

Conductivity

Shallow Resistivity, Invasion Resistivity, HC Saturation

Resistivity

0.2

Conductivity

0.2

Conductivity

0.2

Density Po

45

Bull Density, Neutron Porosity, Thin Beds, High Radioactivity Resistivity Image

0.2 Resistivity Image

Image

Acoustic Transit Time

Transit Time

Neutron

Neutron

Acoustic Transit Time

Porosity

Borehole Size

Caliper

Acoustic Transit Time

Porosity

Acoustic Transit Time

Porosity

Gravity

Gravity

Permeable Zone ID, Bed Boundaries, Sand Count, Caliper, Mud Thickness Permeable Zone ID, Bed Boundaries, Sand Count, Caliper, Mud Thickness

Image

0

Image

0

Density

Density

Drill Bit Size

Bit Size

Borehole Size

Caliper

Borehole Size

Caliper

Borehole Diameter

Caliper

Borehole Size

Caliper

Borehole Size

Caliper

Borehole Size

Caliper

6

6

6

Borehole Size

Caliper

Borehole Diameter

Caliper

Acoustic Transit Time

Porosity

6

Production Density

Density

Density

Density

Density

Density

Density

Density

Neutron

Neutron

Borehole Deviation

Deviation

Borehole Deviation

Deviation

Borehole Deviation

Deviation 0

Spectral Gamma Ray

Gamma

Cased Hole

Cased Hole

Resistivity

Resistivity

Reservoir Analysis

Reservoir

Reservoir Analysis

Reservoir

Density

Density

Magnetic Resonance

Porosity

Acoustic Transit Time

Porosity

Hydrogen Content

Neutron

Neutron

Neutron

Neutron

Neutron

Neutron

Neutron

Spectral Gamma Ray

Gamma

Nonfocused Microresistivity Perm Indicator, Microlog

Resistivity

Carbon Oxygen Ratio

C/o Ratio

Nuclear Magnetic Resonance, Porosity

Porosity

Reservoir Analysis

Reservoir Production

Gamma, Spectral

Gamma

Spectral Gamma Ray

Gamma

0.2

45

Density

Density

Caliper

Caliper

Dielectric Permittivity

Resistivity

Dielectric Permittivity

Resistivity

Focused Resistivity

Resistivity

Dielectric Permittivity

Resistivity

Fluid Density

Production

Focused Resistivity

Resistivity

Focused Resistivity

Resistivity

Dip Meter

Dip

Borehole Deviation

Deviation Induction

Focused Conductivity

Conductivity

Focused Conductivity

Conductivity

True Formation Resistivity, Invasion Profiles, Correlation, Quicklook HC Detection, Depth Control

Induction

Focused Conductivity

Conductivity

Dip Meter

Dip

Directional Survey

Directional Survey

Focused Conductivity

Conductivity

Density

Density

Focused Resistivity

Resistivity

Focused Resistivity

Resistivity

Focused Resistivity

Resistivity

Neutron

Neutron

Neutron

Neutron

Neutron

Neutron

Density Porosity

Density Porosity

Lithodensity Density Porosity

Density Po

Dielectric Permittivity

Resistivity

Change In Density

Density

Amplitude Variation With AVO Calibration, Shear Seismic Correlation, Wellbore Stability, Fracture Height Estimate, Mobility, Fracture Estimation

Transit Time Conductivity

0.2

-2500

Acoustic Transit Time

Porosity

Neutron

Neutron

Transit Time

Porosity

340

Porosity

340

Temperature

Temperature Porosity Porosity

Resistivity Resistivity Nonfocused Microresistivity Perm Indicator, Microlog

Resistivity

Neutron

Neutron

Dielectric Permittivity

Resistivity

Short Normal, Long Normal, Lateral And SP Curves

Lithology

Focused Microlaterolog

Resistivity

Density

Density

Density

Density

Dip Meter

Fractures

Focused Resistivity

Resistivity

Dip Meter

Dip

Acoustic Amplitude, Fractures

Amplitude

Dip Meter

Fractures

Formation Fluid And Pressure

Formation

Formation Fluid And Pressure

Formation

Dip Meter

Fractures

Fracture Analysis

Fractures

Acoustic Wave Train

Porosity

Borehole Deviation

Deviation

Focused Resistivity

Resistivity

Focused Resistivity

Resistivity

Focused Resistivity

Resistivity

Focused Resistivity

Resistivity

440

Radioactivity

Gamma

0

Radioactivity

Gamma

100

Gamma, Spectral

Gamma

0

Spectral Gamma Ray

Gamma

0

Gamma Ray

Gamma

0

Dip Meter

Dip

Density, Lithology, Porosity, Caliper

Density Porosity

Sidewall Cores

Cores

Density

Density

Dip Meter

Dip

Temperature

Temperature

Gamma Ray

Gamma

Resistivity

Resistivity

Focused Conductivity

Conductivity

Focused Conductivity

Conductivity

0

0.2

Conductivity Conductivity Conductivity

Conductivity

0.2

Conductivity

Conductivity

0.2

Conductivity

Conductivity

0.2

Focused Conductivity

Conductivity

Focused Resistivity

Resistivity

Reservoir Analysis

Reservoir

Density

Density

Density

Density

Focused Resistivity

Resistivity

linear

Resistivity

Resistivity

0.2

Resistivity

Resistivity

0.2

Elec Resistivity

Resistivity

Acoustic Transit Time

Porosity

Acoustic Transit Time

Transit Time

Density

Density

Acoustic Transit Time

Porosity

Acoustic Transit Time

Porosity

Acoustic Transit Time

Porosity

Nonfocused Microresistivity Perm Indicator, Microlog

Resistivity

Borehole Deviation

Deviation

Nonfocused Microresistivity Perm Indicator, Microlog

Resistivity

Nonfocused Microresistivity Perm Indicator, Microlog

Resistivity

Focused Microlaterolog

Resistivity

Focused Microlaterolog

Resistivity

Focused Microlaterolog

Resistivity

Nuclear Magnetic Resonance, Porosity

Porosity

Focused MicroLaterolog

Resistivity Resistivity

Resistivity Of Flushed Zone, Porous & Permeable Zones, Movable HC, Caliper

Resistivity

Focused Microlaterolog

Resistivity

Acoustic Wave Train

Seismic

Formation Fluid And Pressure

Formation

Neutron

Neutron

Thorium, Potassium, Uranium Curves

Gamma

0

Gamma, Spectral

Gamma

0

Spectral Gamma Ray

Gamma

0

Neutron

Neutron

Neutron

Neutron

Neutron

Neutron

Neutron

Neutron

Free Fluid

Fluid

Free Fluid

Fluid

Nuclear Magnetic Resonance, Porosity

Porosity

0.2

Neutron

Neutron

Hydrogen Content, Gas Detection, Lithology DID, Clay Analysis, Porosity Analysis

Neutron

Neutron

Neutron

Combined Gamma Density, Neutron Porosity, And GR Spectrometry

Gamma

Borehole Size

Caliper

Photoelectric

Lithology

Photoelectric

Lithology

0

Photoelectric

Lithology

0

Photoelectric

Lithology

0

Porosity

Porosity

0.02

Same As APS EPI

Porosity

45

Neutron

Porosity

45

Pressure

Pressure

Resistivity

Resistivity

Focused Microlaterolog

Resistivity

Indirect Chlorine Concentration

Hydrocarbon Detection

Potassium Curve

Gamma

Temperature

Temperature

Formation Fluid And Pressure

Formation

Bulk Density

Density

Reservoir Analysis

Reservoir

Resistivity Of Flushed Zone

Resistivity

Sandstone Analysis

Sandstone

Spectral Gamma Ray

Gamma

Dip Meter

Dip

Density

Density

Dip Meter

Dip

Focused Resistivity

Resistivity

Acoustic Amplitude Fractures

Amplitude

Resistivity

Resistivity

0.6

0

2

0.2

0

0.2

Focused Resistivity

Resistivity

Resistivity

Resistivity

Formation Fluid And Pressure

Formation

Formation Fluid And Pressure

Formation

0.2

Gamma

0

Gamma, Spectral

Gamma

0

Spectral Gamma Ray

Gamma

0

Acoustic Amplitude

Amplitude

Acoustic Wave Train

Seismic

Shallow Formation Resistivity

Resistivity

Neutron

Neutron

Neutron

Neutron

Reservoir Rock Identification, Formation Water Resistivity

Lithology

-160

Porosity

Porosity

0.4

Gamma, Spectral

Gamma

0

Acoustic Wave Train

Seismic

Seismic Velocity

Seismic

Acoustic Transit Time

Transit Time

Sidewall Cores

Cores

Sidewall Cores

Cores

Neutron

Neutron

Neutron

Neutron

0

Production Neutron

Neutron

Drill String Tension

Tension

12000

Thorium Curve

Gamma

0

Temperature

Temperature

Temperature

Temperature

Temperature

Temperature

Neutron

Neutron Production Production

Temperature

Temperature

True Vertical Depth

Depth

Resistivity Uranium Curve

Gamma

Acoustic Wave Train

Seismic

Acoustic Wave Train

Seismic

Acoustic Wave Train

Seismic

Seismic Velocity

Seismic

Acoustics Seismic

Seismic

Noise Log

Production

Borehole Size

Caliper

-10

Unit

2000 ohm/m 2000 ohm/m

2000 ohm/m -15 pu

2000 ohm/m

20 ohm/m 20 ohm/m

16

16 in

16 in

16 in

150 gapi

20 ohm/m

-15 pu

2000 ohm/m

-0.15 v/v

25000 g/c3

40 us/f 40 us/f

40 us/f

150 API units 200 API units 250 API units 250 API units

150 API units

150 API units

20 ohm/m

2000 ohm/m 2000 ohm/m 20 ohm/m

linear 2000 ohm/m 2000 ohm/m

2000 ohm/m ohm/m

250 API units 250 API units 250 API units

0 v/v

10 10 10 200 ohm/m -15 pu -15 pu

0.1

3 g/c3

2000 ohm/m

250 API units

20 ohm/m

20 ohm/m

250 API units 250 API units 250 API units

50 ohm/m

40 mV 0 v/v 250 API units

2000 lbf 40 ppm

30 ppm