|
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 |
|
|
DIT | Resistivity | 15 | 76, 150, 200 |
|
|
TAP | Temperature | 1 per s | NA |
|
|
|
Tool acceleration | 4 per s | NA |
|
|
|
Pressure | 1 per s | NA |
|
|
MGT | Gamma ray | 15 | 15 |
| Formation MicroScanner (FMS) | FMS | Microresistivity | 0.25 | 0.5 |
| FMS-sonic combination | GPIT | Tool orientation | 0.25 and 15 | NA |
|
|
SGT | Total gamma ray | 15 | NA |
|
|
DSI | Acoustic velocity | 15 | 107 |
| WST (stationary measurement) | WST-3* | Sonic traveltime | Variable | NA |
Notes: All tool and tool string names (except the TAP and MGT) are trademarks of Schlumberger. For the complete list of acronyms used in the ODP and for additional information about tool physics and use consult ODP Logging Services at www.ldeo.columbia.edu/BRG/ODP. See Table T9 for explanations of acronyms used to describe tool strings and tools. * = not included on every run. NA = not applicable.