Table T13. Acronyms and units used for downhole wireline tools and measurements, Expedition 346.
| Tool | Output | Description | Unit |
|---|---|---|---|
| EDTC | Enhanced digital telemetry cartridge | ||
| GR | Total gamma ray | gAPI | |
| ECGR | Environmentally corrected gamma ray | gAPI | |
| EHGR | High-resolution environmentally corrected gamma ray | gAPI | |
| HNGS | Hostile Environment Natural Gamma Ray Sonde | ||
| HSGR | Standard (total) gamma ray | gAPI | |
| HCGR | Computed gamma ray (HSGR minus uranium contribution) | gAPI | |
| HFK | Potassium | wt% | |
| HTHO | Thorium | ppm | |
| HURA | Uranium | ppm | |
| HLDS | Hostile Environment Litho-Density Sonde | ||
| RHOM | Bulk density | g/cm3 | |
| PEFL | Photoelectric effect | barn/e– | |
| LCAL | Caliper (measure of borehole diameter) | Inch | |
| DRH | Bulk density correction | g/cm3 | |
| HRLA | High-Resolution Laterolog Array | ||
| RLA1-5 | Apparent resistivity from computed focusing Mode 1−5 | Ωm | |
| RT | True resistivity | Ωm | |
| MRES | Borehole fluid resistivity | Ωm | |
| MSS | Magnetic Susceptibility Sonde | ||
| LSUS | Magnetic susceptibility, deep reading | Uncalibrated units | |
| HSUS | Magnetic susceptibility, high resolution | Uncalibrated units | |
| FMS | Formation MicroScanner | ||
| C1, C2 | Orthogonal hole diameters | Inch | |
| P1AZ | Pad 1 azimuth | ° | |
| Spatially oriented resistivity images of borehole wall | |||
| GPIT | General Purpose Inclinometry Tool | ||
| DEVI | Hole deviation | ° | |
| HAZI | Hole azimuth | ° | |
| Fx, Fy, Fz | Earth′s magnetic field (three orthogonal components) | ° | |
| Ax, Ay, Az | Acceleration (three orthogonal components) | m/s2 | |
| DSI | Dipole Shear Sonic Imager | ||
| DTCO | Compressional wave slowness | µs/ft | |
| DTSM | Shear wave slowness | µs/ft | |
| DT1 | Shear wave slowness, lower dipole | µs/ft | |
| DT2 | Shear wave slowness, upper dipole | µs/ft |
For the complete list of acronyms used in IODP and for additional information about tool physics, consult IODP-USIO Science Services, LDEO, at iodp.ldeo.columbia.edu/TOOLS_LABS/tools.html.
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