Table T3. The wireline tool strings used and the properties measured, Leg 188.
|
Tool
strings* |
Typical
logging speed (m/hr) |
Individual
tools* |
Properties
measured |
Sample
interval (cm) |
Approximate
vertical
resolution (cm) |
Approximate
depth of investigation (cm) |
|---|---|---|---|---|---|---|
| Triple combo | 250-275 | HNGS | Natural gamma ray | 15 | 45 | 25 |
| (total length ~32 m) | APS | Porosity | 5 and 15 | 30 | 15 | |
| HLDS | Bulk density, PEF | 15 | 38 | 15 | ||
| DITE-SFL | Resistivity | 15 | 150/90/60 | 150/76/38 | ||
| TAP | Temperature | 1 per second | ||||
| TAP | Acceleration | 4 per second | ||||
| TAP | Pressure | 1 per second | ||||
| FMS-sonic | 250-275 | NGT | Natural gamma ray | 15 | 45 | 45 |
| (total length ~30 m) | GPIT | Tool orientation | 1 or 15 | |||
| DSI | Sonic velocity | 15 | 110 | 15-30 | ||
| FMS | Resistivity image | 0.25 | 0.5 | 15 | ||
| GHMT | 300-400 | NGT | Natural gamma ray | 15 | 45 | 25 |
| (total length ~9 m) | SUMS | Susceptibility | 5 and 15 | 35 | ||
| NMRS | Total field | 5 and 15 | 45 |
Notes: * = see Table T5 for definitions of acronyms used to describe tool strings and individual tool names. PEF = photoelectric effect.