Table T7.
Logging tool and measurement acronyms, and units of measurement.
HNGS
Hostile
environment spectral gamma-ray sonde
HSGR
Total
spectral gamma ray
gAPI
HCGR
Computed
uranium-free gamma ray (HSGR-HURA)
gAPI
HFK
Formation
potassium
wt%
HTHO
Thorium
ppm
HURA
Uranium
ppm
APS
Accelerator
porosity sonde
APSC
Near
array porosity (sandstone corrected)
%
FPSC
Far
array porosity (sandstone corrected)
%
SIGF
Neutron
capture cross section of the formation (Sf)
cu
STOF
Estimated
tool standoff (tool distance from borehole wall)
in
HLDS
Hostile
environment lithodensity sonde
RHOB
Bulk
density (corrected)
g/cm3
PEF
Photoelectric
effect factor
barn/e-
DRHO
Delta-rho
(bulk density correction)
g/cm3
CALI
Caliper
(measure of borehole diameter)
in
DITE
Dual
induction tool
IDPH
Phasor
induction (deep resistivity)
m
IMPH
Phasor
induction (medium resistivity)
m
SFLU
Shallow
spherically focused resistivity
m
LDEO-TAP
Temperature/acceleration/pressure
tool
T,
A, P
Temperature,
acceleration, pressure
°C,
mm/s2, psi
NGT
Natural
gamma-ray spectrometry tool
SGR
Standard
(total) gamma ray
gAPI
CGR
Corrected
gamma ray
gAPI
DSI/LSS
Dipole
shear sonic imager or long-spaced sonic imager
DT
Vp
transit time
µs/ft
GPIT
General
purpose inclinometer tool
DEVI
Hole
deviation
°
HAZI
Hole
azimuth
°
P1AZ
Pad
One azimuth
°
C1,
C2
Orthogonal
hole diameters [Caliper 1, Caliper 2 (from FMS tool)]
in
FCA(X,Y,Z)
Total
acceleration vector components
m/s2
F(X,Y,Z)
Total
magnetic field vector components
oersted
MEST/FMS
Microelectrical
resistivity tool or Formation MicroScanner
Spatially
oriented borehole wall resistivity image
NA