CHEVRON GULF OF MEXICO GAS HYDRATE

JIP 2 DRILLING PROGRAM


ACRONYMS USED FOR SCHLUMBERGER LWD-MWD TOOLS


ECO

EcoScope

GVR

geoVision

MP3

MP3 Sonic

PERI

PeriScope


ACRONYMS AND UNITS USED FOR LWD-MWD SCHLUMBERGER (SLB) LOGS


RESISTIVITY


Phase Shift Resistivity - EcoScope (0.5 ft 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 - EcoScope (0.5 ft 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)


geoVision (1.2 in Sampling Rate)

BDAV

Deep Resistivity Average (Ω.m)

BMAV

Medium Resistivity Average (Ω.m)

BSAV

Shallow Resistivity Average (Ω.m)

RING

Ring Resistivity (Ω.m)


POROSITY


EcoScope (0.5 ft Sampling Rate)

BPHI

Best Thermal Neutron Porosity, Average (%)


DENSITY


EcoScope (0.1524 m Sampling Rate)

IDDR

Image Derived Density Correction g/cm3)

IDPE

Image Derived Photoelectric Effect (barns/e-)

IDRO

Image Derived Bulk Density (g/cm3)


GAMMA RAY


geoVision (0.5 ft Sampling Rate)

GR

Gamma Ray (gAPI units)


EcoScope (0.5 ft Sampling Rate)

GRMA

Gamma Ray. Average (gAPI units)


GEOCHEMISTRY


EcoScope (0.5 ft Sampling Rate) - SpectroLith WALK2 Model

DWAL_WALK2

Dry Weight Fraction Pseudo Aluminum

DWCA_WALK2

Dry Weight Fraction Calcium

DWCL_WALK2

Dry Weight Fraction Chlorine Associated with Salt

DWFE_WALK2

Dry Weight Fraction Iron + 0.14 Aluminum

DWGD_WALK2

Dry Weight Fraction Gadolinium

DWHY_WALK2

Dry Weight Fraction Hydrogen Associated with Coal

DWSI_WALK2

Dry Weight Fraction Silicon

DWSU_WALK2

Dry Weight Fraction Sulfur

DWTI_WALK2

Dry Weight Fraction Titanium


CALIPER


EcoScope (0.5 ft Sampling Rate)

DCAV

Differential Caliper Average (in)


VELOCITY


sonicVISION (0.5 ft Sampling Rate)

DTCO

Compressional Slowness(μs/ft)

DTSM

Shear Slowness(μs/ft)

DTRP

Delay Time(μs/ft)

VELP

Compressional Velocity (km/sec)

VELS

Shear Velocity (km/sec)


MISCELLANEOUS


EcoScope (0.5 ft Sampling Rate)

ROP

Rate of Penetration (ft/hr)

ROP5

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

RPM

Tool Rotational Speed (rpm)


geoVision (0.5 ft Sampling Rate)

ROP5

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

RPM

Tool Rotational Speed (rpm)

RTIM

Ring Resistivity Time after Bit (s)


Temperature and Pressure (0.5 ft Sampling Rate)

DHAP

Downhole Annulus Pressure (psi)

DHAT

Downhole Annulus Temperature (°F)


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