Table T6. Measurements made by wireline tool strings. (See table notes.)
| Tool string | Tool | Measurement |
Sampling interval (cm) |
Approximate vertical resolution (cm) |
Triple combination | HNGS | Spectral gamma ray | 15 | 20–30 | GPIT | Tool orientation | 3.8 | NA | HLDS | Bulk density | 2.5 and 15 | 38 | DIT | Resistivity | 15 | 240/180/92 | APS | Porosity | 5 and 15 | 36 | Formation MicroScanner (FMS)-sonic combination | HNGS | Spectral gamma ray | 15 | 20–30 | GPIT | Tool orientation | 3.8 | NA | FMS | Microresistivity | 0.25 | 0.5 | DSI | Acoustic velocity | 15 | 107 |
|---|
Notes: NA = not applicable. All tool and tool string names are trademarks of Schlumberger. For definitions of tool acronyms, see Table T7.
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