Table T9. Acronyms used for the wireline tool strings and their measurements.
Tool
|
Output
|
Explanation
|
Units
|
---|---|---|---|
HNGS | Hostile environment natural gamma-ray sonde | ||
HSGR | Standard (total) gamma ray | gAPI | |
HCGR | Computed gamma ray (HSGR - uranium contribution) | gAPI | |
HFK | Formation potassium | Fraction | |
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) | Fraction | |
FPLC | Far array porosity (limestone corrected) | Fraction | |
SIGF | Neutron capture cross section of the formation (Sf) | Formation capture cross section (CU) | |
STOF | Tool standoff (computed distance from borehole wall) | In | |
HLDS | High-temperature lithodensity sonde | ||
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 | |
GHMT | Geologic magnetic tool | ||
MAGS | Magnetic susceptibility (limited range) | ppm | |
RMGS | Low resistivity magnetic susceptibility (wider range) | ppm | |
MAGC | Earth conductivity | ppm | |
MAGB | Earth total magnetic field | nT | |
DSI | Dipole shear sonic imager | ||
DTCO | Compressional wave transit time | µs/ft | |
DTSM | Shear wave transit time | µs/ft | |
DTST | Stoneley wave transit time | µs/ft | |
TAP | High resolution temperature/acceleration/pressure tool | °C, m/s2, psi | |
GPIT | General purpose inclinometer cartridge | ||
FX, FY, FZ | Magnetic field (3 orthogonal directions) | nT | |
AX, AY, AZ | Acceleration (3 orthogonal directions) | m/s2 |
Note: gAPI = American Petroleum Institute measurement for gamma ray.