Table T7. Measurement acronyms and units, vertical resolutions, and depths of investigation (where available) of wireline tools, Expedition 334.
Tool | Output | Explanation | Unit | Vertical resolution (cm) | Depth of investigation (cm) |
---|---|---|---|---|---|
adnVISION 675 | Azimuthal Density Neutron Tool | ||||
CLXX | Ultrasonic caliper along axes XX, where XX = 15, 26, 37, 48 (for axes 1 and 5, 2 and 6, etc.) | inch | |||
DCAV | Average density caliper | inch | |||
TNPH | Thermal neutron porosity | % | 31 | ||
PEF | Photoelectric factor | b/e− | |||
RHOB | Density | g/cm^{3} | 15 | ||
IDRO | Image-derived density | g/cm^{3} | |||
Oriented density images of borehole wall | |||||
Oriented images of borehole radius from density caliper | |||||
arcVISION 675 | Array Resistivity Compensated Tool | ||||
AXXH, AXXL, AXXB | Attenuation resistivity at source-receiver spacing XX, where XX = 16, 22, 28, 34, and 40 inches | Ωm | 55–122 | 48–102 | |
PXXH, PXXL, PXXB | Phase-shift resistivity at source-receiver spacing XX, where XX = 16, 22, 28, 34, and 40 inches | Ωm | 21–30 | 33–79 | |
In the output acronyms above, H = 2 MHz resistivity, L = 400 kHz resistivity, and B = blended resistivity | |||||
GR_ARC | Calibrated gamma ray | gAPI | 46 | ||
APRS_ARC | Downhole annulus pressure | psi | |||
ATMP | Downhole annulus temperature | °C | |||
geoVISION 675 | Resistivity at the Bit Tool | ||||
GR_CAL | Calibrated gamma ray | gAPI | 46 | ||
RES_BIT | Bit resistivity | Ωm | 30–61 | 30 | |
RES_RING | Ring resistivity | Ωm | 5–8 | 18 | |
RES_BD | Deep button resistivity average | Ωm | 5–8 | 13 | |
RES_BM | Medium button resistivity average | Ωm | 5–8 | 8 | |
RES_BS | Shallow button resistivity average | Ωm | 5–8 | 2.5 | |
Oriented resistivity images of the borehole wall | |||||
Oriented gamma ray images of the borehole wall |
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