Table T7. Major operational phases during Expedition 335.
|
Phase
|
Operations
|
Days
|
Reentries
|
|---|---|---|---|
| 1 | 920 mbsf: open and cement to stabilize hole (920–960 mbsf) | 15.00 | 9 |
| 2 | Core (4 cores; 8% recovery) | ~2 | 1 |
| 3 | Fish/mill junk and ream/clean hole | 19 | 13 |
| 4 | Logging | ~2 | 1 |
| 5 | Core (1 core; 35% recovery), cement to stabilize hole (BOH to 1510 mbsf, 940–910 mbsf) | ~1.5 | 1 |
BOH = bottom of hole. 24 reentries and ~150 miles (~240 km) of pipe trip. 920–940 mbsf zone: stabilized (15 trips through after cementing end of Phase 1 without any trouble). Hole: clean and clear of cuttings, no metal junk left at bottom. Cone: clear. “Fieldwork” samples from ocean crust thermal boundary layer.
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