NGHP Expedition 1


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)

RBIT

Bit Resistivity (Ω.m)

RING

Ring Resistivity (Ω.m)


POROSITY


EcoScope (0.5 ft Sampling Rate)

BPHI

Best Thermal Neutron Porosity, Average (%)

TNPH

Thermal Neutron Porosity (%)


DENSITY


EcoScope (0.1524 m Sampling Rate)

DRHO

Density Correction 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


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

DWFE_WALK2

Dry Weight Fraction Iron

DWGD_WALK2

Dry Weight Fraction Gadolinium

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, Averaged (in)

UCAL

Ultrasonic Caliper, Averaged (in)


VELOCITY


sonicVISION (0.5 ft Sampling Rate)

DTBC

Compressional Slowness, Borehole Compensated (μs/ft)

DTCC

Delta-T, Collar Compensated (μs/ft)

DTRP

Delta-T, Receiver Array (μs/ft)

DTTP

Delta-T, Transmitter Array (km/sec)

VELP

Compressional Velocity (km/sec)


NUCLEAR MAGNETIC RESONANCE


proVISION (0.5 ft Sampling Rate)

BFV

Bound Fluid Volume (%)

FFV

Free Fluid Volume (%)

MRP

Magnetic Resonance Porosity (%)

T2

T2 distribution (%)

T2LM

T2 Logarithmic Mean (ms)


MISCELLANEOUS


EcoScope (0.5 ft Sampling Rate)

ARTM

Resistivity Time After Bit (s)

CRPM

Collar Rotational Speed (rpm)

TAB_DEN

Tool Rotational Speed (s)

TAB_NEU

Neutron Time after Bit (s)


geoVision (0.5 ft Sampling Rate)

B1TM

Shallow Resistivity Time after Bit (s)

B2TM

Medium Resistivity Time after Bit (s)

B3TM

Deep Resistivity Time after Bit (s)

GRTK

Gamma Ray Time after Bit (s)

RBTM

Bit Resistivity Time after Bit (s)

ROP5_RM

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

RPM

Tool Rotational Speed (rpm)

RTIM

Ring Resistivity Time after Bit (s)


TeleScope (MWD, 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