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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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