|
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 |
|
|
DITE | Resistivity | 15 | 150/90/60 |
|
|
TAP | Temperature | 1 per s | NA |
|
|
|
Tool acceleration | 4 per s | NA |
|
|
|
Pressure | 1 per s | NA |
|
|
|
|
|
|
| Formation MicroScanner | NGT | Natural gamma ray | 15 | 46 |
| (FMS)-sonic combination | GPIT | Tool orientation | 0.25 and 15 | NA |
|
|
DSI | Acoustic velocity | 15 | 61-120* |
|
|
FMS | Microresistivity | 0.25 | 0.5 |
Notes: * = depending on mode. All tool and tool string names (except the TAP tool) are trademarks of Schlumberger. For additional information about tool physics and use consult ODP Logging Services at www.ldeo.columbia.edu/BRG/ODP. See Table T22 for explanations of acronyms used to describe tool strings and tools. NA = not applicable.