Table T12. Measurement performance specifications for the azimuthal focused resistivity (AFR) tool, Expedition 348.
| Feature | Specification |
|---|---|
| Operating frequencies (kHz) | 4 and 36 |
| Resistivity measurement operating range (Ωm) | 0.2 to 20,000 |
| Resistivity measurement accuracy (Ωm) | 0 to 200 ± 2% |
| 500 ± 3% | |
| 1,000 ± 10% | |
| 2,000 ± 20% | |
| >10,000—gross indication of change | |
| Depths of investigation (mm) | 76 and 254 from borehole wall |
| Azimuthal bins (mm) | 64 (standard) and 128 (high resolution) |
| Image resolution (mm) | 25 (standard) and 10 (high resolution) |
| Mud resistivity operating range (Ωm) | 0.01–10 |
| Mud resistivity measurement accuracy (Ωm) | 5% for conductivity <1 |
| 10% for conductivities between 1 and 10 | |
| 20% for conductivities >10 | |
| Power supply | Lithium battery |
| Memory size (GB) | 1 |
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