Table T10. Logging operations summary, Hole 1166A.
| Operations depth summary |
Run 1
|
Run 2
|
Run 3
|
Comments | ||
|---|---|---|---|---|---|---|
|
Triple combo
(Main) |
GHMT-sonic
(Main and repeat) |
FMS-NGT
(Passes 1 and 2) |
||||
| Logging operations commenced at 1600 hr on 2/20/00. Wiper trip, sepiolite was circulated; no KCl used. Sea state/heave: average 0.5 m; maximum 1.5 m. | ||||||
| Water depth, seafloor or mudline: | ||||||
| Mudline (mbrf): driller's depth | 486.7 | 486.7 | 486.7 | Run into hole speed = 7000 ft/hr. | ||
| Mudline (mbrf): logger's depth | 480.0 | 480.0 | 480.0 | Triple combo uprun speed = 900 ft/hr. | ||
| Mudline (mbsl) | 475.4 | 475.4 | 475.4 | GHMT-sonic uprun speed = 900 ft/hr; 1200 ft/hr. | ||
| FMS-NGT uprun speed = 1600 ft/hr; 1700 ft/hr. | ||||||
| Drill-pipe depth during logging: | Logging operations ceased at 0800 hr on 2/21/00. | |||||
| Initial pipe depth (mbrf): driller's depth | 527.9 | 527.9 | 527.9 | |||
| Initial pipe depth (mbsf): using driller's depth | 41.2 | 41.2 | 41.2 | |||
| Final pipe depth (mbrf): driller's depth | 513.0 | 513.0 | 513.0 | Initial pipe depth was set at 41.2 mbsf, and pipe was pulled up to 30 mbsf during upruns to give greater coverage of the open hole. | ||
| Final pipe depth (mbrf): depth from logs | 510.0 | 510.0 | 510.0 | |||
| Final pipe depth (mbsf): using driller's depth | 26.3 | 26.3 | 26.3 | |||
| Final pipe depth (mbsf): using logger's depth | 32.0 | 30.0 | 30.0 | Final pipe depth = initial log depth. | ||
| Sticking encountered during logging: | ||||||
| Depth of first bridge or ledge (mbrf; winch) | 650.0 | No ledges or bridges encountered on first run into hole. | ||||
| Depth of first bridge or ledge (mbsf) | 170.0 | Some sticking experienced at ~170 mbsf on repeat of run 2. | ||||
| Final tool depth: | ||||||
| (mbrf; winch) | 863.0 | 864.5 | 864.9 | |||
| (mbsf): using logger's depth | 383.0 | 384.5 | 384.9 | |||
| Total hole depth (m): | 381.3 | 381.3 | 381.3 | All three runs (including both passes of runs 2 and 3) reached total depth, giving maximum open-hole coverage. The upper 40 m to the seafloor were successfully logged with LWD/MWD. | ||
| Length of logging run (m): | 353.0 | 354.5 | 354.9 |
Note: GHMT = geological high-resolution magnetic tool; FMS = Formation MicroScanner; NGT = natural gamma-ray tool; mbrf = meters below rig floor; mbsl = meters below sea level; LWD = logging while drilling; MWD = measurement while drilling.