Table T14. Logging tool and measurement acronyms and units of measurement.

Tool	Output	Explanation	Units
HNGS		Hostile environment natural gamma-ray sonde
	HSGR	Standard (total) gamma ray	gAPI
	HCGR	Computed gamma ray (HSGR minus uranium contribution)	gAPI
	HFK	Formation potassium	%
	HTHO	Thorium	ppm
	HURA	Uranium	ppm
NGT		Natural gamma-ray tool
	SGR	Standard total gamma ray	gAPI
	CGR	Computed gamma ray (SGR minus uranium contribution)	gAPI
	POTA	Potassium	%
	THOR	Thorium	ppm
	URAN	Uranium	ppm
APS		Accelerator porosity sonde
	APLC	Near array porosity (limestone corrected)	%
	FPLC	Far array porosity (limestone corrected)	%
	SIGF	Neutron capture cross section of the formation (Sf)	cu (capture units)
	STOF	Tool standoff (computed distance from borehole wall)	in
HLDS		High temperature lithodensity sonde
	RHOM	Bulk density (corrected)	g/cm3
	PEFL	Photoelectric effect factor	barn/e-
	LCAL	Caliper measure of borehole diameter	in
	DRH	Bulk density correction	g/cm3
DLL		Dual laterolog
	LLD	Deep laterolog	m
	LLS	Shallow laterolog	m
DITE-SFR		Dual induction tool-spherically focused resistivity tool
	IDPH	Phasor deep induction	m
	IMPH	Phasor medium induction	m
	SFLU	Shallow spherically focused log	m
TAP		High resolution temperature/acceleration/pressure tool
	T, A, P	Temperature/acceleration/pressure	°C, mm/s2, psi
DSI		Dipole shear sonic imager
	Vp	Compressional wave velocity	m/s
	Vs	Shear wave velocity	m/s
LSS		Long-spaced sonic tool
	Vp	Compressional wave velocity	m/s
FMS		Formation MicroScanner
		Resistivity image
GPIT		General purpose inclinometer tool
	Hazi	Hole azimuth	°
	FNOR	Intensity of the total magnetic field	oer (oersted)
WST		Well seismic tool
	t	Acoustic arrival time	µs