Table T2. Triple-combination tool measurement acronyms and units of measurement.

Tool
Output
Explanation
Units
MGT
Multisensor gamma-ray tool

SGR Standard total gamma ray gAPI

POTA Potassium %

THOR Thorium ppm

URAN Uranium ppm


Raw window counts and stacked spectral data cps
HNGS
Hostile environment natural gamma-ray sonde

HSGR Standard (total) gamma ray gAPI

HCGR Computed gamma ray (= HSGR - uranium) gAPI

HFK Formation potassium Fractional %

HTHO Thorium ppm

HURA Uranium ppm
APS
Accelerator porosity sonde

APLC Near array porosity (limestone corrected) Fraction

FPLC Far array porosity (limestone corrected) Fraction

SIGF Neutron capture cross section of the formation (Sf) cu

STOF Tool standoff (computed distance from borehole wall) in
HLDT
High-temperature lithodensity tool

RHOM Bulk density (corrected) g/cm3

PEFL Photoelectric effect barn/e-

LCAL Caliper (measure of borehole diameter) in

DRH Bulk density correction g/cm3
DIT
Dual induction tool
SFR
Spherically focused resistivity

IDPH Deep induction phasor-processed resistivity m

IMPH Medium induction phasor-processed resistivity m

SFLU Shallow spherically focused resistivity m
TAP
High-resolution temperature/acceleration/pressure tool °C, m/s2, psi