ACT

Aluminum Clay Tool

CNTG

Compensated Neutron Tool

DIL

Dual Induction Log

DLL

Dual Laterolog

FMS

Formation MicroScanner

GPIT

General Purpose Inclinometry Tool

GR

Gamma Ray Tool

GST

Gamma Ray Spetroscopy Tool

LDT

Lithodnesity Tool

MSFL

Microspehrically Focused Log

NGT

Natural Gamma Ray Spectrometry Tool

SDT

Sonic Digital Tool (aka Sonic Array Tool)

ALUM

ACT Aluminum (weight, dec. frac.)

CALI

LDT Caliper (in)

CCA

GST Calcium Elemental Yield ( dec. frac.)

CCHL

GST Chlorine Elemental Yield (dec. frac.)

CFE

GST Iron Elemental Yield (dec. frac.)

CHY

GST Hydrogen Elemental Yield (dec. frac.)

CGR

NGT Computed Gamma Ray (API units)

CS

Cable Speed (m/hr)

CSI

GST Silicon Elemental Yield (dec. frac.)

CSUL

GST Sulfur Elemental Yield (dec. frac.)

CTB

GST Backgroun Yield (dec. frac.)

DRHO

LDT Formation Density Correction (g/cm³)

DTCO

SDT Compressional Slowness (μs/ft)

DTSM

SDT Shear Slowness (μs/ft)

DTST

SDT Stoneley Slowness (μs/ft)

ENPH

CNTG Epithermal Porosity (dec. frac. or %)

ETIM

Elapsed Time (sec)

FECN

CNTG Far Epithermal Detector Count Rates (cps)

FTCN

CNTG Far Thermal Detector Count Rates (cps)

GR

GR Gamma Ray (API units)

NECN

CNTG Near Epithermal Detector Count Rates (cps)

NTCN

CNTG Near Thermal Detector Count Rates (cps)

ILD

DIL Deep Resistivity (Ω.m)

ILM

DIL Medium Resistivity (Ω.m)

LLD

DLL Laterolog Deep Resistivy (Ω.m)

LLS

DLL Shallow Deep Resistivy (Ω.m)

LTT1

SDT Long Spacing Transit Time 1 (μs)

LTT2

SDT Long Spacing Transit Time 2 (μs)

LTT3

SDT Long Spacing Transit Time 3 (μs)

LTT4

SDT Long Spacing Transit Time 4 (μs)

MSFL

MSFL Micro-Sperically Focused Log (Ω.m)

NPHI

CNTG Neutron Porosity (%)

PEF

LDT Photoelectric factor (barns/e^-)

POTA

NGT Potassium (weight, dec. frac.)

RHOB

LDT Formation Density (g/cm³)

SGR

NGT Standard Gamma Ray (API units)

TT1

SDT Tool: DDBHC Short-Spaced Mode, Transit Time 1 (μs)

TT2

SDT Tool: DDBHC Short-Spaced Mode, Transit Time 2 (μs)

TT3

SDT Tool: DDBHC Short-Spaced Mode, Transit Time 3 (μs)

TT4

SDT Tool: DDBHC Short-Spaced Mode, Transit Time 4 (μs)

TENS

Tension (lb)

TNPH

CNTG Thermal Porosity (dec. frac. or %)

THOR

NGT Thorium (ppm)

URAN

NGT Uranium (ppm)

VELP

SDT Compressional Velocity (from DTCO, km/s)

VELS

SDT Shear Velocity (from DTSM, km/s)

VST

Stoneley Velocity (from DTST, km/s)

W1NG

NGT Window 1 counts (cps)

W2NG

NGT Window 2 counts (cps)

W3NG

NGT Window 3 counts (cps)

W4NG

NGT Window 4 counts (cps)

W5NG

NGT Window 5 counts (cps)

Any missing SLB acronyms could be found at SLB's Curve Mnemonic Dictionary