|
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/HLDT | Bulk density | 2.5 and 15 | 38/46 |
|
|
DIT | Resistivity | 15 | 61 |
|
|
TAP* | Temperature | 1 per s | NA |
|
|
|
Tool acceleration | 4 per s | NA |
|
|
|
Pressure | 1 per s | NA |
|
|
QSST | Inline checkshot |
|
|
|
|
|
|
|
|
| Formation MicroScanner | SGT | Total gamma ray | 15 | 46 |
|
|
|
|
|
|
| (FMS)-sonic combination | GPIT | Tool orientation | 0.25 and 15 | NA |
|
|
FMS | Microresistivity | 0.25 | 0.5 |
|
|
DSI/SDT/LSS/BHC | Acoustic velocity | 15 | 107/120/61/61 |
|
|
|
|
|
|
| VSI (stationary measurement) | VSI | Sonic traveltime | Variable | NA |
| WST (stationary measurement) | WST | Sonic traveltime | Variable | NA |
Notes: All tool and tool string names (except the TAP) 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 T8 for explanations for acronyms used to describe tool strings and tools. * = not included on every run. NA = not applicable.