| Tool string* | Tool† | Measurement | Sampling interval (cm) |
Approximate vertical resolution (cm) |
|---|---|---|---|---|
| Triple combination | HNGS‡ | Spectral gamma ray | 15 | 51 |
| APS | Porosity | 5 and 15 | 43 | |
| HLDS | Bulk density | 2.5 and 15 | 38/46 | |
| DIT | Resistivity | 15 | 200/150/76 | |
| MGT** | Gamma ray | 15 | 15 | |
| Formation MicroScanner (FMS)-sonic combination | NGT | Spectral gamma ray | 15 | 46 |
| GPIT | Tool orientation | 0.25 and 15 | NA | |
| FMS | Microresistivity | 0.25 | 0.5 | |
| DSI | Acoustic velocity | 15 | 107 | |
| GHMT | NGT | Spectral gamma ray | 15 | 46 |
| SUMS | Susceptibility | 5 and 15 | 35 | |
| NMRS | Total field | 5 and 15 | 45 |
Notes: * = all tool and tool string names (except the TAP and MGT tools) are trademarks of Schlumberger. † = for additional information about tool physics and use consult ODP Logging Services at http://www.ldeo.columbia.edu/BRG/ODP. ‡ = see Table T8 for explanations of acronyms used to describe tool strings and tools. ** = not included in each logging run. NA = not applicable.