CHEVRON GULF OF MEXICO GAS HYDRATE


JIP 1 DRILLING PROGRAM


ACRONYMS USED FOR SCHLUMBERGER (SLB) LWD-MWD TOOLS


ADN

Azimuthal Density-Neutron

ARC

Array Resistivity Compensated

ECO

Ecoscope

MWD

Measurement-While-Drilling

NMR

Nuclear Magnetic Resonance

GVR

Resistivity-at-the-Bit


ACRONYMS AND UNITS USED FOR LWD-MWD SLB LOGS


RESISTIVITY


Phase Shift Resistivity - ARC (0.1524 m Sampling rate)

P16B

Phase Shift Resistivity Blended, 16 in. (Ω.m)

P22B

Phase Shift Resistivity Blended, 22 in. (Ω.m)

P28B

Phase Shift Resistivity Blended, 28 in. (Ω.m)

P34B

Phase Shift Resistivity Blended, 34 in. (Ω.m)

P40B

Phase Shift Resistivity Blended, 40 in. (Ω.m)

P16H

Phase Shift Resistivity, 2 MHz, 16 in (Ω.m)

P22H

Phase Shift Resistivity, 2 MHz, 22 in (Ω.m)

P28H

Phase Shift Resistivity, 2 MHz, 28 in (Ω.m)

P34H

Phase Shift Resistivity, 2 MHz, 34 in (Ω.m)

P40H

Phase Shift Resistivity, 2 MHz, 40 in (Ω.m)

P16L

Phase Shift Resistivity, 400 KHz, 16 in (Ω.m)

P22L

Phase Shift Resistivity, 400 KHz, 22 in (Ω.m)

P28L

Phase Shift Resistivity, 400 KHz, 28 in (Ω.m)

P34L

Phase Shift Resistivity, 400 KHz, 34 in (Ω.m)

P40L

Phase Shift Resistivity, 400 KHz, 40 in (Ω.m)


Attenuation Resistivity - ARC (0.1524 m Sampling Rate)

A16B

Attenuation Resistivity Blended, 16 in. (Ω.m)

A22B

Attenuation Resistivity Blended, 22 in. (Ω.m)

A28B

Attenuation Resistivity Blended, 28 in. (Ω.m)

A34B

Attenuation Resistivity Blended, 34 in. (Ω.m)

A40B

Attenuation Resistivity Blended, 40 in. (Ω.m)

A16H

Attenuation Resistivity, 2 MHz, 16 in. (Ω.m)

A22H

Attenuation Resistivity, 2 MHz, 22 in. (Ω.m)

A28H

Attenuation Resistivity, 2 MHz, 28 in. (Ω.m)

A34H

Attenuation Resistivity, 2 MHz, 34 in. (Ω.m)

A40H

Attenuation Resistivity, 2 MHz, 40 in. (Ω.m)

A16L

Attenuation Resistivity, 400 KHz, 16 in. (Ω.m)

A22L

Attenuation Resistivity, 400 KHz, 22 in. (Ω.m)

A28L

Attenuation Resistivity, 400 KHz, 28 in. (Ω.m)

A34L

Attenuation Resistivity, 400 KHz, 34 in. (Ω.m)

A40L

Attenuation Resistivity, 400 KHz, 40 in. (Ω.m)


GVR (0.03048 m Sampling Rate)

BDAV

Deep Resistivity Average (Ω.m)

BMAV

Medium Resistivity Average (Ω.m)

BSAV

Shallow Resistivity Average (Ω.m)

RBIT

Bit Resistivity (Ω.m)

RING

Ring Resistivity (Ω.m)


POROSITY


ADN (0.1524 m Sampling Rate)

TNPH

Thermal Neutron Porosity (%)

 


ECOSCOPE (0.1524 m Sampling Rate)

TNPH

Thermal Neutron Porosity (%)

BPHI

Best Thermal Neutron Porosity, Average (%)

 


DENSITY


ADN and ECOSCOPE (0.1524 m Sampling Rate)

DRHO

Density Correction (g/cm3)

DRRT

Correction for rotational density (g/cm3)

IDDR

Image Derived Density Correction g/cm3)

IDPE

Image Derived Photoelectric Effect (barns/e-)

IDRO

Image Derived Bulk Density (g/cm3)

PEF

Photoelectric Effect (barns/e-)

RHOB

Bulk Density (g/cm3)


GAMMA RAY (including Spectral Gamma Ray)


GVR (0.1524 m Sampling Rate)

GR

RAB Gamma Ray (gAPI units)


CALIPER


ADN and ECOSCOPE (0.1524 m Sampling Rate)

DCAL

Differential Caliper (in)

DCAV

Differential Caliper Average (in)


NUCLEAR MAGNETIC RESONANCE


NMR (0.1524 m Sampling Rate)

BFV_T2

Bound Fluid Volume (%)

FFV_T2

Free Fluid Volume (%)

MRP_T2

Magnetic Resonance Porosity (%)

T2

T2 Distribution (%)

T2LM_T2

T2 Logarithmic Mean (ms)


MISCELLANEOUS


ADN (0.1524 m Sampling Rate)

DTAB

ADN Density Time after Bit (s)

NTAB

ADN Neutron Time after Bit (s)

ROP5_RM

Rate of Penetration, average over last 5 ft (m/hr)

RPM

Tool Rotational Speed (rpm)


ECOSCOPE (0.1524 m Sampling Rate)

AGTM

ARC Gamma Ray Time After Bit (s)

ARTM

ARC Resistivity Time After Bit (s)

ROP5_RM

Rate of Penetration, average over last 5 ft (m/hr)

RPM

Tool Rotational Speed (rpm)

TAB_DEN

Density Time after Bit (s)

TAB_NEU

Neutron Time after Bit (s)


GVR (0.1524 m Sampling Rate)

B1TM

RAB Shallow Resistivity Time after Bit (s)

B2TM

RAB Medium Resistivity Time after Bit (s)

B3TM

RAB Deep Resistivity Time after Bit (s)

GRTK

RAB Gamma Ray Time after Bit (s)

RBTM

RAB Bit Resistivity Time After Bit (s)

ROP5_RM

Rate of Penetration, average over last 5 ft (m/hr)

RPM

Tool Rotational Speed (rpm)

RTIM

RAB Ring Resistivity Time after Bit (s)


Temperature and Pressure (0.1524 m Sampling Rate)

DHAP

Downhole Annulus Pressure (psi)

DHAT

Downhole Annulus Temperature (°C)


ACRONYMS USED FOR SLB WIRELINE TOOLS


DSI

Dipole sonic Imager

GPIT

General Purpose Inclinometer Tool

SGT

Scintillation Gamma Tool

VSI

Vertical Seismic Imager


ACRONYMS AND UNITS USED FOR SLB WIRELINE LOGS


DSI (0.1524 m Sampling Rate)

DT1

Delta-Time Shear, Lower Dipole (μs/ft)

DT2

Delta-Time Shear, Upper Dipole (μs/ft)

DTCO

Delta-Time Compressional (μs/ft)

VS1

Shear Velocity, Lower Dipole (from DT1, km/s)

VS2

Shear Velocity, Upper Dipole (from DT2, km/s)

VCO

Compressional Velocity (from DTCO, km/s)


GPIT (0.1524 m Sampling Rate)

AX

Acceleration on X Axis (m/s2)

AY

Acceleration on Y Axis (m/s2)

AZ

Acceleration on Z Axis (m/s2)

FINC

Inclination (°)

FNOR

Total Moment (oer)

FX

Magnetic Field On X Axis (oer)

FY

Magnetic Field On Y Axis (oer)

FZ

Magnetic Field On Z Axis (oer)

HAZI

Hole Azimuth (°)

P1AZ

Pad One Azimuth (°)

RB

Relative Bearing (°)


SGT (0.1524 and 0.03048 m Sampling Rate)

ECGR

Environmentally Corrected Gamma Ray (gAPI)

EHGR

High Resolution Environmentally Corrected Gamma Ray (gAPI)


Miscellaneous (0.1524 m Sampling Rate)

CS

Cable Speed (m/hr)

DF

Drilling Force (lb)

ETIM

Elapsed Time (s)

TENS

Cable Tension (lb)


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