DEEP SEA DRILLING PROJECT
ACRONYMS USED FOR WIRELINE SCHLUMBERGER (SLB) TOOLS
BHC | Borehole Compensated Sonic Tool |
CNL | Compensated Neutron Log |
DIL | Dual Induction Log |
DLL | Dual Laterolog |
EL | Electrical Log (Normal 16", Normal 64", Lateral 18'8") |
FDC | Formation Density Compensated Tool |
GGD | Gamma-Gamma Density Tool |
GNT | Gamma-Neutron Tool |
GR | Natural Gamma Ray Tool |
HRT | High Resolution Temperature Log |
IEL | Induction Electrical Log (Normal 16", R6FF40) |
ISF | Induction Spherically Focused Tool |
LL3 | Laterolog 3 |
LL8 | Laterolog 8 |
LSS | Long Spacing Sonic Tool |
MCD | Mechanical Caliper Device |
NGT | Natural Gamma Ray Spectrometry Tool |
SP | Spontaneous Potential |
ACRONYMS USED FOR WIRELINE GEARHART-OWEN TOOLS
BHC | Borehole Compensated Sonic Tool |
CL | Caliper Log |
CDL | Compensated Density Log |
GR | Natural Gamma Ray Tool |
IEL | Induction Electrical Log (Normal 16", R6FF40) |
LL3 | Laterolog 3 |
NL | Neutron Log |
TEMP | Temperature Tool |
ACRONYMS USED FOR WIRELINE DRESSER ATLAS TOOLS
AL | Acoustic Log |
CL | Caliper Log |
EL | Electrical Log (Normal 16", Normal 64", Lateral 18'8") |
SP | Spontaneous Potential |
ACRONYMS USED FOR WIRELINE WELEX TOOLS
EL | Electrical Log (Normal 16", Normal 64", Lateral 18'8) |
SP | Spontaneous Potential |
OTHER TOOLS
MAGN | Russian Magnetometer/Susceptibility Tool |
ACRONYMS AND UNITS USED FOR DATA CHANNELS
ASN | EL Amplified Short Normal (Ωm) |
CALI | CL/MCD Caliper (in) |
CGR | NGT Computed (Th+K) Gamma Ray (API units) |
CILD | IEL Deep Induction Conductivity (mS/m). Used for the conductivity from the IEL tool (mS/m) |
COND | LL3/LL8 Conductivity (mS/m) (for compatibility with more recent software) |
CS | Cable Speed (m/hr) |
DIFF | Mean-Median Difference, computed (μs/ft) |
DRHO | CDL/FDC Bulk Density Correction (g/cm3) |
DT | BHC/AL Transit Time in BHC (μs/ft) |
DT | LSS Short Spacing Transit Time (10'-8' spacing; μs/ft) |
DTL | LSS Long Spacing Transit Time (12'-10' spacing; μs/ft) |
ETIM | Elapsed Time (s) |
FCNL | CNL Far Detector Count Rate (cps) |
GR | GR/GNT Natural Gamma Ray (API units) |
GRAD | Temperature Gradient (mK/m) |
HX | MAGN X-component of the magnetic field (γ or nT) |
HY | MAGN Y-component of the magnetic field (γ or nT) |
IL | IEL Induction Resistivity from IEL tool (Ωm) |
ILD | DIL Deep Resistivity (Ωm) |
ILM | DIL Medium Resistivity (Ωm) |
ITT | LSS Integrated Transit Time (s) |
LL3 | LL3 Laterolog (Ωm) |
LL8 | LL8 Laterolog (Ωm) |
LLD | DLL Laterolog Deep (Ωm). Sometimes used instead of LL3. |
LLS | DLL Laterolog Shallow (Ωm) |
MEAN | Mean Transit Time, computed (μs/ft) |
MEDIAN | Median Transit Time, computed (μs/ft) |
NCNL | CNL Near Detector Count Rate (cps) |
NPHI | CNL Neutron Porosity (%) |
PEF | CDL Photoelectric Effect (barns/e-) |
POINTS | Number of Transmitter-Receiver Pairs Used in the Sonic processing |
POTA | NGT Potassium (wet wt. %) |
RIL | IEL Induction Resistivity from IEL tool (alternate name for IL; Ωm) |
RHOB | CDL/FDC Bulk Density (g/cm3) |
RNEU | GNT/NL Raw Neutron (API units) |
RRHO | GGD Raw Density (cps) |
SFLU | DIL /ISF Spherically Focused Log (Ωm) |
SGR | NGT Standard (Total) Gamma Ray (API units) |
SN | IEL Short Normal (Ωm) |
SP | SP Spontaneous Potential (mV) |
SUSC | MAGN Magnetic Susceptibility (x 4π x 10-6 SI) |
TEMP | HRT/TEMP Temperature (°C) |
TENS | Tension (lb) |
THOR | NGT Thorium (ppm) |
TT1 | LSS Transit Time (10' spacing; μs) |
TT2 | LSS Transit Time (8' spacing; μs |
TT3 | LSS Transit Time (12' spacing; μs) |
TT4 | LSS Transit Time (10' spacing; μs) |
URAN | NGT Uranium (ppm) |
VP | BHC/AL Compressional Wave Velocity (km/s), computed from DT |
VP1 | Compressional Wave Velocity (LSS Short Spacing or Mean Transit Time; km/s) |
VP2 | Compressional Wave Velocity (LSS Long Spacing or Median Transit Time; km/s) |
Z | MAGN Vertical component of the magnetic field (γ or nT) |
Any missing SLB acronyms could be found at SLB's Curve Mnemonic Dictionary |