INTEGRATED OCEAN DRILLING PROGRAM
ACRONYMS USED FOR WIRELINE SCHLUMBERGER TOOLS
APS 
Accelerator Porosity Sonde 
DIT 
Dual Induction Tool 
DLL 
Dual Laterolog 
DSI 
Dipole Sonic Imager 
EDTCB

Enhanced Digital Telemetry Cartridge 
EMS

Environment Measurement Sonde 
FMS 
Formation MicroScanner 
GPIT 
General Purpose Inclinometry Tool 
HLDS 
Hostile Environment Lithodensity Sonde 
HNGS 
Hostile Environment Gamma Ray Sonde 
HRLA

High Resolution Laterolog Array Tool 
LEHMT

Logging Equipment Head and Mud Temperature 
MCD 
Mechanical Caliper Device 
QAIT 
SlimXtreme Array Induction Imager Tool 
SGT 
Scintillation Gamma Ray Tool 
SP 
Spontaneous Potential 
UBI 
Ultrasonic Borehole Imager 
VSI 
Versatile Seismic Imager 
WST 
Well Seismic Tool 
WST3 
3Component Well Seismic Tool 
ACRONYMS USED FOR LWD SCHLUMBERGER TOOLS
ADN 
adnVISION 
ARC 
arcVISION Tool 
ECO 
EcoScope Tool 
GVR 
geoVISION 
NEO

NeoScope Tool 
SONIC 
sonicVISION Tool 
MWD 
MeasurementWhile Drilling Tool 
NMR 
proVision Tool 
RAB 
ResistivityattheBit Tool 
SCOPE

SonicScope Tool 
TELE 
TeleScope Tool 
ACRONYMS USED FOR NONSCHLUMBERGER SPECIALTY TOOLS
MGT 
Multisensor Gamma Tool 
MSS

Magnetic Susceptibility Sonde 
MTT

Modular Temperature Tool

TAP

TemperatureAccelerationPressure Tool

ACRONYMS USED FOR THIRD PARTY TOOLS
MAGNGBM 
Borehole 3axis Magnetometer (Univ. of Goettingen) 
DEPTH SCALE TERMINOLOGY

DRILLING DEPTH SCALE 
DRF

Drilling depth below rig floor (m DRF) 
DSF  Drilling depth below sea floor (m DSF) 
WIRELINE LOGGING DEPTH SCALE  
WRF 
Wireline log depth below rig floor (m WRF) 
WSF 
Wireline log depth below sea floor (m WSF) 
WMSF 
Wireline log matched depth below sea floor (m WMSF) 
WSSF 
Wireline log speedcorrected depth below sea floor (m WSSF) 
LOGGING WHILE DRILLING DEPTH SCALE  
LRF  LWD depth below rig floor (m LRF) 
LSF

LWD depth below sea floor (m LSF) 
CORE DEPTH SCALE  
CSF 
Core depth below rig floor (m CSF) 
CCSF 
Core composite depth below sea floor (m CCSF) 
MUD DEPTH SCALE  
MSL  Mud depth below sea level (m MSL) 
SEISMIC DEPTH SCALE  
SSF 
Seismic depth scale (m SSF) 
ACRONYMS AND UNITS USED FOR WIRELINE SCHLUMBERGER LOGS
AF10 
QAIT Induction Resistivity, 10in investigation depth (ohmm) 
AF20 
QAIT Induction Resistivity, 20in investigation depth (ohmm)

AF30 
QAIT Induction Resistivity, 30in investigation depth (ohmm) 
AF60 
QAIT Induction Resistivity, 60in investigation depth (ohmm) 
AF90 
QAIT Induction Resistivity, 90in investigation depth (ohmm) 
AFEC 
APS Far Detector Counts (cps) 
APLC 
APS Near/Array Corrected Limestone Porosity (%) 
ANEC 
APS Near Detector Counts (cps) 
AX 
GPIT Acceleration X Axis (ft/s^{2})

AY 
GPIT Acceleration Y Axis (ft/s^{2})

AZ 
GPIT Acceleration Z Axis (ft/s^{2})

AZIM 
GPIT Constant Azimuth for Deviation Correction (deg) 
BAMN

UBI Amplitude, Minimum Value (in)

BAMX


C1 
FMS Caliper 1 (in) 
C2 

CALI 
HLDS/MCD Caliper (in) 
CS 
Cable Speed (m/hr) 
DEVI 
GPIT Hole Deviation (degrees)

DF 
Drilling Force (lbf) 
DRH 
Bulk Density Correction (g/cm^{3}) 
DT1 
DSI Shear Slowness, Lower Dipole (microsec/ft) 
DT1R 
DSI Shear Slowness, Receiver Array, Lower Dipole (microsec/ft) 
DT1T 
DSI Shear Slowness, Transmitter Array, Lower Dipole (microsec/ft) 
DT2 
DSI Shear Slowness, Upper Dipole (microsec/ft) 
DT2R 
DSI Shear Slowness, Receiver Array, Upper Dipole (microsec/ft) 
DT2T 
DSI Compressional Slowness, Transmitter Array, Upper Dipole (microsec/ft)

DT4P 
DSI Compressional Slowness, P&S (microsec/ft)

DT4S 
DSI Shear Slowness, P&S (microsec/ft) 
DT5 
DSI Compressional Slowness (microsec/ft), First Detection Mode 
DTCO 
DSI Compressional Slowness (microsec/ft)

DTRP 
DSI Compressional Slowness, Receiver Array, P&S (microsec/ft)

DTRS 
DSI Shear Slowness, Receiver Array, P&S (microsec/ft) 
DTSM 
DSI Shear Slowness (microsec/ft) 
DTST 
DSI Stoneley Slowness(microsec/ft) 
DTTP 
DSI Compressional Slowness, Transmitter Array, P&S (microsec/ft) 
DTTS 
DSI Shear Slowness, Transmitter Array, P&S (microsec/ft) 
ECGR 
SGTE Environmentally Corrected Gamma Ray (API units)

ECGR

SGTE/EDTCB Environmentally Corrected Gamma Ray (API units)

EHGR 
SGTE/EDTCB Environmentally Corrected High Resolution Gamma Ray (API units)

ETIM 
Elapsed Time (sec) 
FINC 
GPIT Magnetic Field Inclination (degrees)

FNOR 
GPIT Magnetic Field Total Moment (oersted)

FPLC 
APS Far Array Corrected Limestone Porosity (%)

FX 
GPIT Magnetic Field on X Axis (oersted)

FY 
GPIT Magnetic Field on Y Axis (oersted)

FZ 
GPIT Magnetic Field on Z Axis (oersted) 
GR

SGTE/EDTCB Gamma Ray (API units) 
HALC

APS High Resolution Near/Array Corrected Limestone Porosity (%) 
HAZI 
GPIT Hole Azimuth (degrees)

HBDC 
HLDS High Resolution Bulk Density Correction (g/cm^{3})

HBHK 
HNGS Borehole Potassium (%) 
HCGR 

HDEB 
HLDS High Resolution Enhanced Bulk Density (g/cm^{3})

HFEC 

HFK 
HNGS Formation Potassium (%)

HFLC 
APS High Resolution Far/Array Limestone Porosity Corrected (%)

HGR

SGTE/EDTCB High Resolution Gamma Ray (API units)

HLCA 
HLDS High Resolution Caliper (in

HLEF 
HLDS High Resolution Longspaced Photoelectric Effect (barns/e^{})

HNEC 

HRHL

HLDS High Resolution Longspaced Bulk Density (g/cm^{3})

HRHS

HLDS High Resolution Shortspaced Bulk Density (g/cm^{3})

HROM 
HLDS High Resolution Corrected Bulk Density (g/cm^{3}) 
HSGR 

HSIG 
APS High Resolution Formation Capture Cross Section (capture units)

HSTO 

HTHO 
HNGS Thorium (ppm)

HURA 
HNGS Uranium (ppm)

IDPH 

IMPH 

LCAL 
DIT Caliper (in) 
LLD 
ARI/DLL Laterolog Deep (ohmm)

LLS 
ARI/DLL Laterolog Shallow (ohmm) 
MTEM

LEHMT Mud Temperature (degC^{})

NRHB 
HLDS Bulk Density (g/cm^{3}) 
P1AZ 
GPIT Pad 1 Azimuth (degrees) 
PEFL 
HLDS Longspaced Photoelectric Effect (barns/e^{}) 
RADIUS_25 
UBI Lower quartile value of the borehole radius distribution (in) 
RADIUS_75 

RADIUS_MEDIAN


RB 
GPIT Pad 1 Relative Bearing (degrees)

RCAV 

RCMN 
UBI Corrected Radius, Minimum Value (in)

RCMX 

REMS 
EMS Mud Resistivity (ohmm) 
RHL 
HLDS Longspaced Bulk Density (g/cm^{3})

RHOM 
HLDS Corrected Bulk Density (g/cm^{3}) 
RHS 
HLDS Shortspaced Bulk Density (g/cm^{3})

RLA1

HRLA Apparent Resistivity from Computed Focusing Mode 1 (ohmm)

RLA2

HRLA Apparent Resistivity from Computed Focusing Mode 2 (ohmm)

RLA3

HRLA Apparent Resistivity from Computed Focusing Mode 3 (ohmm)

RLA4

HRLA Apparent Resistivity from Computed Focusing Mode 4 (ohmm)

RLA5

HRLA Apparent Resistivity from Computed Focusing Mode 5 (ohmm)

RM_HRLT

HRLA Computed Mud Resistivity (ohmm)

RT_HRLT

HRLA True Formation Resistivity (ohmm)

SFLU 
DIT Spherically Focused Log (ohmm)

SIGF 
APS Formation Capture Cross Section (capture units)

SP 
SP Spontaneous Potential (mV)

STOF 
APS Computed Standoff (in) 
TENS 
Tension (lb) 
TMP 
Mud Temperature (degC) 
V4P 
DSI Compressional Velocity, from DT4P (P&S; km/s) 
V4S 

V5P 
DSI Compressional Velocity (km/s, from DT5) 
VCO 
DSI Compressional Velocity (from DTCO, km/s) 
VELP 
DSI Compressional Velocity (processed from waveforms; km/s) 
VELS 
DSI Shear Velocity (processed from waveforms; km/s) 
VS 
DSI Shear Velocity (from DTSM, km/s) 
VS1 
DSI Shear Velocity, from DT1 (Lower Dipole; km/s) 
VS1R 
DSI Shear Velocity, from DT1R (Receiver Array, Lower Dipole; km/s)

VS1T 
DSI Shear Velocity, from DT1T (Transmitter Array, Lower Dipole; km/s) 
VS2 
DSI Shear Velocity, from DT2 (Upper Dipole; km/s) 
VS2R 
DSI Shear Velocity, from DT2R (Receiver Array, Upper Dipole; km/s) 
VS2T 
DSI Shear Velocity, from DT2T (Transmitter Array, Upper Dipole; km/s) 
VST 
DSI Stoneley Velocity (from DTST, km/s) 
VRP 
DSI Compressional Velocity, from DTRP (Receiver Array, P&S; km/s) 
VRS 
DSI Shear Velocity, from DTRS (Receiver Array, P&S; km/s) 
VTP 
DSI Compressional Velocity, from DTTP (Transmitter Array, P&S; km/s) 
VTS 
DSI Shear Velocity, from DTTS (Transmitter Array, P&S; km/s) 
ACRONYMS AND UNITS USED FOR LWD/MWD SCHLUMBERGER LOGS
A16B 
ARC/ECO Attenuation Resistivity Blended, 16 in. (ohmm)

A22B 
ARC/ECO Attenuation Resistivity Blended, 22 in. (ohmm) 
A28B 
ARC/ECO Attenuation Resistivity Blended, 28 in. (ohmm) 
A34B 
ARC/ECO Attenuation Resistivity Blended, 34 in. (ohmm) 
A40B 
ARC/ECO Attenuation Resistivity Blended, 40 in. (ohmm) 
A16H 
ARC/ECO Attenuation Resistivity, 2 MHz, 16 in. (ohmm) 
A22H 
ARC/ECO Attenuation Resistivity, 2 MHz, 22 in. (ohmm) 
A28H 

A34H 

A40H 
ARC/ECO Attenuation Resistivity, 2 MHz, 40 in. (ohmm) 
A16L 
ARC/ECO Attenuation Resistivity, 400 KHz, 16 in. (ohmm) 
A22L 
ARC/ECO Attenuation Resistivity, 400 KHz, 22 in. (ohmm) 
A28L 
ARC/ECO Attenuation Resistivity, 400 KHz, 28 in. (ohmm) 
A34L 
ARC/ECO Attenuation Resistivity, 400 KHz, 34 in. (ohmm) 
A40L 
ARC/ECO Attenuation Resistivity, 400 KHz, 40 in. (ohmm) 
ADIA

NEO Borehole Diameter, Average (in)

AGTM 

APRS 

ARTM 

ATMP 
ARC Annulus Temperature (degC) 
B1TM 
GVR Shallow Resistivity Time after Bit (s)

B2TM 
GVR Medium Resistivity Time after Bit (s) 
B3TM 
GVR Deep Resistivity Time after Bit (s) 
BDAV 
GVR Deep Resistivity Average (ohmm) 
BFV 
NMR Bound Fluid Volume (%)

BMAV 
GVR Medium Resistivity Average (ohmm) 
BPHI 
ECO Best Thermal Neutron Porosity, Average (%) 
BSAV 
GVR Shallow Resistivity Average (ohmm) 
DCAL 
ADN/ECO Differential Caliper (in)

DCAV

ECO/NEO/ADN Density Caliper, Average (in)

DHAP 
ECO Downhole Annulus Pressure (psi)

DHAT 
ECO Downhole Annulus Temperature (degC) 
DRHO 
ADN/ECO Bulk Density Correction (g/cm^{3})

DRRT 
ADN/ECO Correction for ADN rotational density (g/cm^{3}). 
DTAB 
ADN Density Time after Bit (hr) 
DTCO 
SONIC Compressional Delta Time, computed downhole (microsec/ft)

DTCU 

DWAL_WALK2 
ECO Dry Weight Fraction Pseudo Aluminum (Walk2 Mode) 
DWCA_WALK2


DWFE_WALK2 

DWGD_WALK2 

DWK_WALK2 
ECO Dry Weight Fraction Potassium (Walk2 Mode)

DWSI_WALK2 

DWSU_WALK2 

DWTI_WALK2 
ECO Dry Weight Fraction Titanium (Walk2 Mode)

ECD 
ARC Equivalent Circulating Density (lb/gal)

FFV 
NMR Free Fluid Volume (%) 
GR 
ARC/GVR Gamma Ray (API Units) 
GRMA 
ECO Gamma Ray, Average (gAPI units)

GRTK 
GVR Gamma Ray Time after Bit (s) 
IDDR 
ADN/ECO Image Derived Density Correction
(g/cm^{3}). 
IDPE 
ADN/ECO Image Derived Photoelectric Effect
(barns/e^{}) 
IDRO 
ADN/ECO Image Derived Bulk Density (g/cm^{3}) 
ISTB 
SONIC Sonic Time after Bit (hr or min) 
ITT 
SONIC Integrated Transit Time (microsec) 
KTIM 
NMR Timur/Coates Permeability (mD)

MRP 
NMR Magnetic Resonance Porosity

NTAB 

P16B 
ARC/ECO Phase Shift Resistivity Blended, 16 in. (ohmm) 
P22B 
ARC/ECO Phase Shift Resistivity Blended, 22 in. (ohmm) 
P28B 
ARC/ECO Phase Shift Resistivity Blended, 28 in. (ohmm) 
P34B 
ARC/ECO Phase Shift Resistivity Blended, 34 in. (ohmm) 
P40B 
ARC/ECO Phase Shift Resistivity Blended, 40 in. (ohmm) 
P16H 
ARC/ECO Phase Shift Resistivity, 2 MHz, 16 in (ohmm) 
P22H 
ARC/ECO Phase Shift Resistivity, 2 MHz, 22 in (ohmm) 
P28H 
ARC/ECO Phase Shift Resistivity, 2 MHz, 28 in (ohmm) 
P34H 
ARC/ECO Phase Shift Resistivity, 2 MHz, 34 in (ohmm) 
P40H 
ARC/ECO Phase Shift Resistivity, 2 MHz, 40 in (ohmm) 
P16L 
ARC/ECO Phase Shift Resistivity, 400 KHz, 16 in (ohmm) 
P22L 
ARC/ECO Phase Shift Resistivity, 400 KHz, 22 in (ohmm) 
P28L 
ARC/ECO Phase Shift Resistivity, 400 KHz, 28 in (ohmm) 
P34L 
ARC/ECO Phase Shift Resistivity, 400 KHz, 34 in (ohmm) 
P40L 
ARC/ECO Phase Shift Resistivity, 400 KHz, 40 in (ohmm) 
PEF 
ADN/ECO Photoelectric Effect (barns/e^{}) 
RBIT 
GVR Bit Resistivity (ohmm) 
RBTM 
GVR Resistivity Time After Bit (s) 
RING 
GVR Ring Resistivity (ohmm) 
RHOB 
ADN/ECO Bulk Density (g/cm^{3}) 
RHON

NEO Bulk Density (g/cm^{3})

ROP5 

RPM 
ADN/ARC/ECO/GVRTool Rotation Speed (rpm) 
RTIM 
GVR Ring Resistivity Time after Bit (hr)

T2 
NMR T2 Distribution (%) 
T2LM 
NMR T2 Logarithmic Mean (ms) 
TAB_DEN 
ARC/ECO Density Time after Bit (s)

TAB_NEU 
ARC/ECO Neutron Time after Bit (s)

TNPH 
ADN/ECO Thermal Neutron Porosity (%)

UCAV

ECO/NEO Ultrasonic Caliper, Average (in)

VCO 
SONIC Compressional Velocity (Computed Downhole), from DTCO (km/s)

VCU 
SONIC Compressional Velocity (Computed Uphole), from DTCU (km/s)

ACRONYMS AND UNITS USED FOR SPECIALTY LOGS
CALC_MS 
MSS Calculated Magnetic Susceptibility (approx_SI) 
LCONR 
MSS Dual Coil Conductivity, Raw Data (V) 
LSUSR 
MSS Deep Dual Coil Susceptibility, Raw Data (V) 
TEMP 
MSS Internal Tool Temperature (degC) 