Table T17. Downhole measurements made by wireline tool strings, Expedition 317. (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 | 15 | |
| HLDS | Bulk density | 2.5 and 15 | 38 | |
| DIT | Resistivity | 15 | 240/180/92 | |
| APS | Porosity | 5 and 15 | 36 | |
| Formation MicroScanner-sonic | HNGS | Spectral gamma ray | 15 | 20–30 |
| GPIT | Tool orientation | 3.8 | 15 | |
| FMS | Microresistivity | 0.25 | 0.5 | |
| DSI | Acoustic velocity | 15 | 107 | |
| Versatile Seismic Imager | SGT | Total gamma ray | 5 and 15 | 30 |
| VSI | Acoustic travel time | Stations at 20 m | NA |
Notes: All tool names are trademarks of Schlumberger. Sampling interval is based on optimal logging speed. NA = not applicable. For definitions of tool acronyms, see Table T18.
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