Table T1. Summary of basement operations completed at Site U1383. Operations included (A) a jet-in test in Hole U1383A; (B) installing a reentry cone with 16 inch casing, installing 10.75 inch casing, drilling a 14.75 inch hole below the casing with a bit failure, and installing a remotely operated vehicle (ROV) platform in Hole U1383B; and (C) installing a reentry cone and two casing strings, rotary core barrel (RCB) coring to 331.5 mbsf, downhole logging and packer experiments, and installing a multilevel subseafloor borehole observatory (CORK) in Hole U1383C.
| Operational task | Start | End | Task time | |||
|---|---|---|---|---|---|---|
| Date (2011) |
Time (h) |
Date (2011) |
Time (h) |
|||
| Hours | Days | |||||
| (A) Hole U1383A: jet-in test at proposed Site NP-2 | ||||||
| Make up 18.5 inch tricone bit | ||||||
| Handle BHA (will take 1 h) | 12 Oct | 1230 | 12 Oct | 1400 | 1.50 | 0.06 |
| Trip: surface to mudline, ±1 h in 4425 m of water | 12 Oct | 1400 | 12 Oct | 2045 | 6.75 | 0.28 |
| Handle camera (will take 0.5 h) | 12 Oct | 2045 | 12 Oct | 2100 | 0.25 | 0.01 |
| Pick up top drive and space out drill pipe (will take 0.75 h) | 12 Oct | 2100 | 12 Oct | 2145 | 0.75 | 0.03 |
| Drill string tag (will take 0.5 h) | 12 Oct | 2145 | 12 Oct | 2215 | 0.50 | 0.02 |
| Begin to recover camera frame | ||||||
| Record SCRs and space out for jet-in test (will take 0.25 h); spud Hole U1383A at 2240 h | 12 Oct | 2215 | 12 Oct | 2245 | 0.50 | 0.02 |
| Jet-in test (will take 6 h) to 4461 mbrf (36 mbsf); very firm with max weight down and 120 spm (ROP ~1.0 m/h) | 12 Oct | 2245 | 13 Oct | 0200 | 3.25 | 0.14 |
| Pull out of hole (will take 0.5 h); top drive clears seafloor at 0221 h | 13 Oct | 0200 | 13 Oct | 0245 | 0.75 | 0.03 |
| Set back top drive (will take 0.25 h) | 13 Oct | 0245 | 13 Oct | 0300 | 0.25 | 0.01 |
| Trip: depth to surface: from (mudline) 0 mbsf to surface, plus 0 h in 4425 m of water | 13 Oct | 0300 | 13 Oct | 0900 | 6.00 | 0.25 |
| Handle BHA (will take 1 h) | 13 Oct | 0900 | 13 Oct | 0930 | 0.50 | 0.02 |
| Bit clears rig floor at 0931 h; end of Hole U1383A | ||||||
| Hole U1383A totals: | 12 Oct | 1230 | 13 Oct | 0930 | 21.00 | 0.88 |
| (B) Hole U1383B: install reentry cone and 20 inch casing | ||||||
| Reentry cone (will take 2 h) | 13 Oct | 0930 | 13 Oct | 1015 | 0.75 | 0.03 |
| Run 20 inch casing | ||||||
| Rig up/down for casing (will take 1 h) | 13 Oct | 1015 | 13 Oct | 1030 | 0.25 | 0.01 |
| Assemble 20 inch casing | 13 Oct | 1030 | 13 Oct | 1245 | 2.25 | 0.09 |
| Rig up/down for casing (will take 0.25 h) | 13 Oct | 1245 | 13 Oct | 1315 | 0.50 | 0.02 |
| Make up casing running tool (will take 0.5 h) | 13 Oct | 1315 | 13 Oct | 1315 | 0.00 | 0.00 |
| Lower 20 inch casing and latch into reentry funnel (will take 0.5 h) | 13 Oct | 1315 | 13 Oct | 1345 | 0.50 | 0.02 |
| Release running tool, pull back to rig floor, and RIH with bottom section of BHA (will take 0.5 h) | 13 Oct | 1345 | 13 Oct | 1415 | 0.50 | 0.02 |
| RIH and latch running tool into reentry cone (will take 0.5 h) | 13 Oct | 1415 | 13 Oct | 1500 | 0.75 | 0.03 |
| Pick up reentry cone and open moonpool doors/lower reentry cone (will take 0.25 h) | 13 Oct | 1500 | 13 Oct | 1515 | 0.25 | 0.01 |
| Reentry funnel in water at 1522 h | ||||||
| Handle BHA (will take 1 h) | 13 Oct | 1515 | 13 Oct | 1545 | 0.50 | 0.02 |
| Trip: surface to mudline, plus 0 h in 4425 m of water | 13 Oct | 1545 | 13 Oct | 2330 | 7.75 | 0.32 |
| Deploy camera (will take 0.5 h) | 13 Oct | 2330 | 14 Oct | 0000 | 0.50 | 0.02 |
| Pick up top drive and space out drill pipe (will take 1 h) | 14 Oct | 0000 | 14 Oct | 0100 | 1.00 | 0.04 |
| Spud Hole U1383B at 0100 h | ||||||
| Jet-in casing (will take 5 h) | 14 Oct | 0100 | 14 Oct | 0500 | 4.00 | 0.17 |
| Repair mud pump #2; sheared pin in the pony rod (will take 0.5 h) | 14 Oct | 0500 | 14 Oct | 0530 | 0.50 | 0.02 |
| Resume jetting-in casing (will take 1 h) | 14 Oct | 0530 | 14 Oct | 0730 | 2.00 | 0.08 |
| POOH with 20 inch casing to clear seafloor, and move 50 m at 045° (will take 0.75 h) | 14 Oct | 0730 | 14 Oct | 0815 | 0.75 | 0.03 |
| Stop jet-in of 20 inch casing at 0728 h; clear seafloor at 0730 h | ||||||
| Resume jet-in of 20 inch casing (will take 2 h); spud at 0810 h | 14 Oct | 0815 | 14 Oct | 1015 | 2.00 | 0.08 |
| Release running tool (will take 1 h); release at 1035 h | 14 Oct | 1015 | 14 Oct | 1030 | 0.25 | 0.01 |
| Set back top drive (will take 0.5 h) | 14 Oct | 1030 | 14 Oct | 1100 | 0.50 | 0.02 |
| Trip: mudline to surface, ±1 h in 4425 m of water | 14 Oct | 1100 | 14 Oct | 1715 | 6.25 | 0.26 |
| Recover camera (will take 0.5 h) | 14 Oct | 1715 | 14 Oct | 1730 | 0.25 | 0.01 |
| Handle BHA (will take 1 h) | 14 Oct | 1730 | 14 Oct | 1815 | 0.75 | 0.03 |
| De-torque and lay out casing running tool and lay out drill collars pups (will take 1 h) | 14 Oct | 1815 | 14 Oct | 1915 | 1.00 | 0.04 |
| Hole U1383B: drill out 18.5 inch hole for 16 inch casing | ||||||
| Change out bit jets in 18.5 inch tricone bit (will take 0.5 h) | 14 Oct | 1915 | 14 Oct | 1945 | 0.50 | 0.02 |
| Handle BHA (will take 0.75 h) | 14 Oct | 1945 | 14 Oct | 2015 | 0.50 | 0.02 |
| Trip: surface to 2978 mbrf (will take 5 h) | 14 Oct | 2015 | 15 Oct | 0115 | 5.00 | 0.21 |
| Deploy camera (will take 0.5 h) | 15 Oct | 0115 | 15 Oct | 0130 | 0.25 | 0.01 |
| Slip/Cut drill line at 100 stands (will take 1.5 h) | 15 Oct | 0130 | 15 Oct | 0245 | 1.25 | 0.05 |
| Trip from 2978 mbrf to mudline (will take 2 h) | 15 Oct | 0245 | 15 Oct | 0515 | 2.50 | 0.10 |
| Maneuver ship for reentry (will take 0.5 h); reenter Hole U1383B at 0518 h | 15 Oct | 0515 | 15 Oct | 0515 | 0.00 | 0.00 |
| Recover camera from seafloor | 15 Oct | 0515 | 15 Oct | 0645 | 1.50 | 0.06 |
| Trip to casing shoe and pick up top drive while recovering camera frame | ||||||
| Trip: depth to depth: from (mudline) 0 to 40 mbsf, plus 0 h in 4425 m of water | 15 Oct | 0645 | 15 Oct | 0645 | 0.00 | 0.00 |
| Pick up top drive and space out drill pipe (will take 0 h) | 15 Oct | 0645 | 15 Oct | 0645 | 0.00 | 0.00 |
| RIH and tag bottom at 0704 h (will take 0.25 h) | 15 Oct | 0645 | 15 Oct | 0700 | 0.25 | 0.01 |
| Drill ahead 18.5 inch hole in sediment: from 40 to 53 mbsf at 15 m/h | 15 Oct | 0700 | 15 Oct | 0730 | 0.50 | 0.02 |
| Basement contact at 53 mbsf at 0723 h | ||||||
| Drill ahead 18.5 inch hole in basement: from 53 to 68 mbsf at 2 m/h | 15 Oct | 0730 | 15 Oct | 1630 | 9.00 | 0.38 |
| Circulation (will take 1 h) | 15 Oct | 1630 | 15 Oct | 1700 | 0.50 | 0.02 |
| Wiper trip: from 68 mbsf to 35 mbsf and back | 15 Oct | 1700 | 15 Oct | 2045 | 3.75 | 0.16 |
| Wiper trip 1: 4 m soft fill on bottom; circulate mud sweep | ||||||
| Wiper trip 2: 2 m soft fill; circulate mud sweep | ||||||
| Wiper trip 3: 2 m soft fill again; circulate mud sweep | ||||||
| End of hole conditioning: 1 m soft fill—easily washed | ||||||
| Trip: depth to depth: from 68 to 35 mbsf, plus 0 h in 4425 m of water | 15 Oct | 2045 | 15 Oct | 2100 | 0.25 | 0.01 |
| Set back top drive (will take 0.5 h) | 15 Oct | 2100 | 15 Oct | 2115 | 0.25 | 0.01 |
| Trip: depth to surface: from 35 mbsf to surface, ±0.5 h in 4425 m of water | 15 Oct | 2115 | 16 Oct | 0430 | 7.25 | 0.30 |
| Handle BHA (will take 1 h) | 16 Oct | 0430 | 16 Oct | 0500 | 0.50 | 0.02 |
| Hole U1383B: install 16 inch casing | ||||||
| Lay out bit sub/float valve, make up casing running tool with drill collars, rack back stand (will take 0.5 h) | 16 Oct | 0500 | 16 Oct | 0530 | 0.50 | 0.02 |
| Rig up/down for casing (will take 2 h) | 16 Oct | 0530 | 16 Oct | 0615 | 0.75 | 0.03 |
| Assemble 16 inch casing | 16 Oct | 0615 | 16 Oct | 0745 | 1.50 | 0.06 |
| Make up casing running tool with 16 inch casing hanger and replace master bushings (will take 1 h) | 16 Oct | 0745 | 16 Oct | 0815 | 0.50 | 0.02 |
| Handle BHA (will take 0.5 h) | 16 Oct | 0815 | 16 Oct | 0830 | 0.25 | 0.01 |
| Trip: surface to mudline, plus 0 h in 4425 m of water | 16 Oct | 0830 | 16 Oct | 1445 | 6.25 | 0.26 |
| Deploy camera (will take 0.25 h) | 16 Oct | 1445 | 16 Oct | 1500 | 0.25 | 0.01 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1524 h | 16 Oct | 1500 | 16 Oct | 1530 | 0.50 | 0.02 |
| Trip: mudline to depth: from 0 to 50 mbsf, plus 0.5 h | 16 Oct | 1530 | 16 Oct | 1600 | 0.50 | 0.02 |
| Unable to pass basement contact; work drill string/offset ship (will take 3 h) | 16 Oct | 1600 | 16 Oct | 1945 | 3.75 | 0.16 |
| Work casing shoe to ~3.0 m into basement; hole apparently slightly deviated | ||||||
| Decision made to POOH and shorten casing length by 5.0 m, placing 16 inch casing shoe ~1.0 m into basement (original target was 5–6 m into basement) | ||||||
| Trip: depth to surface: from 50 mbsf to surface, ±1.5 h in 4425 m of water | 16 Oct | 1945 | 17 Oct | 0300 | 7.25 | 0.30 |
| Handle BHA and remove casing running tool from casing hanger (will take 0.5 h) | 17 Oct | 0300 | 17 Oct | 0330 | 0.50 | 0.02 |
| Break out and lay out hanger joint (will take 1 h) | 17 Oct | 0330 | 17 Oct | 0515 | 1.75 | 0.07 |
| Break out and lay out 2 additional joints of casing (will take 1.25 h) | 17 Oct | 0515 | 17 Oct | 0630 | 1.25 | 0.05 |
| Shorten casing shoe joint by 5.0 m and weld on new casing shoe (will take 1.5 h) | 17 Oct | 0630 | 17 Oct | 0800 | 1.50 | 0.06 |
| Make up remaining casing joints (will take 1.5 h) | 17 Oct | 0800 | 17 Oct | 0930 | 1.50 | 0.06 |
| Make up casing running tool with 16 inch casing hanger (will take 0.5 h) | 17 Oct | 0930 | 17 Oct | 0945 | 0.25 | 0.01 |
| Handle BHA (will take 0.25 h) | 17 Oct | 0945 | 17 Oct | 1000 | 0.25 | 0.01 |
| Trip: surface to mudline, ±1.5 h in 4425 m of water | 17 Oct | 1000 | 17 Oct | 1500 | 5.00 | 0.21 |
| Handle camera (will take 0.5 h) | 17 Oct | 1500 | 17 Oct | 1530 | 0.50 | 0.02 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1537 h | 17 Oct | 1530 | 17 Oct | 1545 | 0.25 | 0.01 |
| Trip: mudline to depth: from 0 to 50 mbsf, plus 0.5 h | 17 Oct | 1545 | 17 Oct | 1600 | 0.25 | 0.01 |
| Pick up top drive and space out drill pipe (will take 0.5 h) | 17 Oct | 1600 | 17 Oct | 1615 | 0.25 | 0.01 |
| Land casing (will take 1 h) | 17 Oct | 1615 | 17 Oct | 1630 | 0.25 | 0.01 |
| Cement casing shoe (will take 2 h) | 17 Oct | 1630 | 17 Oct | 1745 | 1.25 | 0.05 |
| Release cone/casing hanger (will take 0.5 h); release casing at 1743 h | 17 Oct | 1745 | 17 Oct | 1745 | 0.00 | 0.00 |
| Circulation (will take 1 h) | 17 Oct | 1745 | 17 Oct | 1845 | 1.00 | 0.04 |
| Set back top drive (will take 0.5 h) | 17 Oct | 1845 | 17 Oct | 1915 | 0.50 | 0.02 |
| Recover camera (will take 0.5 h) | 17 Oct | 1915 | 17 Oct | 1945 | 0.50 | 0.02 |
| Trip: mudline to surface, plus 0 h in 4425 m of water | 17 Oct | 1945 | 18 Oct | 0115 | 5.50 | 0.23 |
| Handle BHA (will take 1 h) | 18 Oct | 0115 | 18 Oct | 0145 | 0.50 | 0.02 |
| De-torque casing running tool and lay out to rig floor (will take 0.5 h) | 18 Oct | 0145 | 18 Oct | 0200 | 0.25 | 0.01 |
| Hole U1383B: drill 14.75 inch hole for 10.75 inch tricone bit and drill out for 10.75 inch casing | ||||||
| Handle BHA (will take 1 h) | 18 Oct | 0200 | 18 Oct | 0330 | 1.50 | 0.06 |
| Deploy camera (will take 0.5 h) | 18 Oct | 0330 | 18 Oct | 0400 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1.25 h in 4425 m of water | 18 Oct | 0400 | 18 Oct | 1015 | 6.25 | 0.26 |
| Slip/Cut drill line (will take 1.5 h) | 18 Oct | 1015 | 18 Oct | 1200 | 1.75 | 0.07 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1210 h | 18 Oct | 1200 | 18 Oct | 1215 | 0.25 | 0.01 |
| Trip: mudline to depth: from 0 to 59 mbsf, plus 1 h | 18 Oct | 1215 | 18 Oct | 1300 | 0.75 | 0.03 |
| Recover camera (will take 0.5 h) | 18 Oct | 1300 | 18 Oct | 1330 | 0.50 | 0.02 |
| Tag cement at 49 mbsf | ||||||
| Pick up top drive and space out drill pipe (will take 1 h) | 18 Oct | 1330 | 18 Oct | 1345 | 0.25 | 0.01 |
| Take slow circulating rates (will take 0.75 h) | 18 Oct | 1345 | 18 Oct | 1415 | 0.50 | 0.02 |
| Drill ahead (drill out cement/shoe): from 59 to 69 mbsf at 3 m/h | 18 Oct | 1415 | 18 Oct | 1500 | 0.75 | 0.03 |
| Break though at 1502 h at 57 mbsf | ||||||
| On-bottom drilling at 1520 h | ||||||
| Drill ahead: from 69 to 84 mbsf at 1.4 m/h (adjusted ROP to reflect actual time required during first drilled interval of 15 m) | 18 Oct | 1500 | 19 Oct | 0145 | 10.75 | 0.45 |
| Drill ahead: from 84 to 89 mbsf at 1.4 m/h | 19 Oct | 0145 | 19 Oct | 0515 | 3.50 | 0.15 |
| Wiper trip: from 89 mbsf to 54 mbsf and back | 19 Oct | 0515 | 19 Oct | 0715 | 2.00 | 0.08 |
| Hole problems; bit not advancing (will take 2.75 h) | 19 Oct | 0715 | 19 Oct | 1000 | 2.75 | 0.11 |
| Set back top drive (will take 0.5 h) | 19 Oct | 1000 | 19 Oct | 1030 | 0.50 | 0.02 |
| Trip: depth to surface: from 89 mbsf to surface, ±1.5 h in 4425 m of water | 19 Oct | 1030 | 19 Oct | 1700 | 6.50 | 0.27 |
| Clear seafloor at 1050 h | ||||||
| Handle BHA (will take 1 h) | 19 Oct | 1700 | 19 Oct | 1745 | 0.75 | 0.03 |
| Damaged bit cleared rig floor at 1750 h, ending Hole U1383B | ||||||
| Hole U1383B totals: | 13 Oct | 0930 | 19 Oct | 1745 | 152.25 | 6.34 |
| (C) Hole U1383C: re-start deep CORK observatory installation; install reentry cone with 16 inch casing | ||||||
| Inspect bit; found 2 of 3 bit shanks/cutters missing and third damaged (will take 0.25 h) | 19 Oct | 1745 | 19 Oct | 1800 | 0.25 | 0.01 |
| Hold meeting to discuss operational options (will take 0.5 h) | 19 Oct | 1800 | 19 Oct | 1830 | 0.50 | 0.02 |
| Determine low likelihood that hole can be salvaged; decision made to restart hole with new reentry installation | ||||||
| Assemble new reentry cone and prepare new 16 inch conductor casing shoe joint (will take 12 h) | 19 Oct | 1830 | 20 Oct | 0630 | 12.00 | 0.50 |
| Deploy reentry cone and 16 inch conductor casing | ||||||
| Reentry cone (will take 0 h) | 20 Oct | 0630 | 20 Oct | 0630 | 0.00 | 0.00 |
| Handle BHA (will take 0 h) | 20 Oct | 0630 | 20 Oct | 0630 | 0.00 | 0.00 |
| Rig up/down for casing (will take 0.75 h) | 20 Oct | 0630 | 20 Oct | 0700 | 0.50 | 0.02 |
| Assemble 16 inch casing | 20 Oct | 0700 | 20 Oct | 0800 | 1.00 | 0.04 |
| Rig up/down for casing (will take 0 h) | 20 Oct | 0800 | 20 Oct | 0800 | 0.00 | 0.00 |
| Make up casing running tool (will take 0.5 h) | 20 Oct | 0800 | 20 Oct | 0830 | 0.50 | 0.02 |
| Lower 16 inch casing and latch into reentry funnel (will take 0.25 h) | 20 Oct | 0830 | 20 Oct | 0845 | 0.25 | 0.01 |
| Release running tool from reentry cone (will take 0.25 h) | 20 Oct | 0845 | 20 Oct | 0900 | 0.25 | 0.01 |
| Make up BHA below running tool (will take 1 h) | 20 Oct | 0900 | 20 Oct | 1000 | 1.00 | 0.04 |
| Lower and make up running tool in reentry cone (will take 0.5 h) | 20 Oct | 1000 | 20 Oct | 1015 | 0.25 | 0.01 |
| Pick up reentry cone and open moonpool doors/lower reentry cone (will take 0.75 h) | 20 Oct | 1015 | 20 Oct | 1030 | 0.25 | 0.01 |
| Pick up tapered drill collar and 2 stands of 5.5 inch transition drill pipe (will take 0.75 h) | 20 Oct | 1030 | 20 Oct | 1100 | 0.50 | 0.02 |
| Fill pipe as required/deploy camera at 70 stands during pipe trip (will take 0.5 h) | 20 Oct | 1100 | 20 Oct | 1130 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1.25 h in 4425 m of water | 20 Oct | 1130 | 20 Oct | 1815 | 6.75 | 0.28 |
| Pick up top drive and space out drill pipe (will take 0.75 h) | 20 Oct | 1815 | 20 Oct | 1900 | 0.75 | 0.03 |
| Spud Hole U1383C at 1900 h | ||||||
| Jet-in casing (will take 2.75 h) | 20 Oct | 1900 | 20 Oct | 2130 | 2.50 | 0.10 |
| Release running tool (will take 0.25 h); release at 2130 h | 20 Oct | 2130 | 20 Oct | 2130 | 0.00 | 0.00 |
| POOH with top drive (will take 0.25 h) | 20 Oct | 2130 | 20 Oct | 2145 | 0.25 | 0.01 |
| Set back top drive (will take 0.5 h) | 20 Oct | 2145 | 20 Oct | 2215 | 0.50 | 0.02 |
| Trip: mudline to surface, ±1.75 h in 4425 m of water | 20 Oct | 2215 | 21 Oct | 0415 | 6.00 | 0.25 |
| Recover camera (will take 0.25 h) | 21 Oct | 0415 | 21 Oct | 0430 | 0.25 | 0.01 |
| Handle BHA, de-torque and lay out casing running tool, and lay out drill collars pups (will take 1 h) | 21 Oct | 0430 | 21 Oct | 0600 | 1.50 | 0.06 |
| Hole U1383C: drill out 14.75 inch hole for 10.75 inch casing | ||||||
| Make up 14.75 inch triton bit (will take 0.5 h) | 21 Oct | 0600 | 21 Oct | 0630 | 0.50 | 0.02 |
| Handle BHA (will take 0.5 h) | 21 Oct | 0630 | 21 Oct | 0700 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1 h in 4425 m of water | 21 Oct | 0700 | 21 Oct | 1345 | 6.75 | 0.28 |
| Deploy camera (will take 0.5 h) | 21 Oct | 1345 | 21 Oct | 1415 | 0.50 | 0.02 |
| Maneuver ship for reentry (will take 0.5 h); reenter Hole U1383C at 1444 h | 21 Oct | 1415 | 21 Oct | 1445 | 0.50 | 0.02 |
| Pick up top drive and space out drill pipe (will take 0.5 h) | 21 Oct | 1445 | 21 Oct | 1515 | 0.50 | 0.02 |
| Move bit from (mudline) 0 to 35 mbsf (will take 0.5 h) | 21 Oct | 1515 | 21 Oct | 1545 | 0.50 | 0.02 |
| Handle camera (will take 0.75 h) | 21 Oct | 1545 | 21 Oct | 1630 | 0.75 | 0.03 |
| Drill ahead 14.75 inch hole in sediment: from 35 to 38 mbsf at 30 m/h | 21 Oct | 1630 | 21 Oct | 1645 | 0.25 | 0.01 |
| Basement contact at 38 mbsf at 1645 h | 0.00 | 0.00 | ||||
| Drill ahead 14.75 inch hole in basement: from 38 to 69.5 mbsf at 1.3 m/h | 21 Oct | 1645 | 22 Oct | 1845 | 26.00 | 1.08 |
| Circulation (will take 1 h) | 22 Oct | 1845 | 22 Oct | 1915 | 0.50 | 0.02 |
| Wiper trip: from 69.5 mbsf to 80 mbsf and back | 22 Oct | 1915 | 22 Oct | 2345 | 4.50 | 0.19 |
| Wiper trip 1: ledge(?) at 100 m, 10 m fill on bottom; circulate to TD and pump 50 bbl mud sweep | ||||||
| Wiper trip 2: no ledge and 3 m(??) fill on bottom; circulate to TD and pump 50 bbl sweep | ||||||
| Wiper trip 3: apparent 7 m fill; circulate to TD and pump 80 bbl mud sweep | ||||||
| Wiper trip 4: 5 m fill; circulate 80 bbl sweep | ||||||
| Wiper trip 5: 2.7 m fill; POOH | ||||||
| Trip: depth to mudline: 69.5 mbsf to mudline, plus 0.25 h | 22 Oct | 2345 | 23 Oct | 0000 | 0.25 | 0.01 |
| Set back top drive (will take 0.25 h) | 23 Oct | 0000 | 23 Oct | 0015 | 0.25 | 0.01 |
| Clear seafloor at 0025 h | ||||||
| Trip: mudline to surface, ±1.5 h in 4425 m of water | 23 Oct | 0015 | 23 Oct | 0630 | 6.25 | 0.26 |
| Handle BHA (will take 0.75 h) | 23 Oct | 0630 | 23 Oct | 0700 | 0.50 | 0.02 |
| Bit clears rotary table at 0702 h | ||||||
| Hole U1383C: install 10.75 inch casing | ||||||
| Make up stand with casing running tool and stand back in derrick (will take 0.5 h) | 23 Oct | 0700 | 23 Oct | 0730 | 0.50 | 0.02 |
| Rig up/down for casing (will take 0.75 h) | 23 Oct | 0730 | 23 Oct | 0815 | 0.75 | 0.03 |
| Case with 10.75 inch casing from 0 to 65 mbsf at 4 joints/h, plus 0 h | 23 Oct | 0815 | 23 Oct | 0930 | 1.25 | 0.05 |
| Make up 10.75 inch casing hanger and weld coupling (will take 0.25 h)/weld all casing couplings | 23 Oct | 0930 | 23 Oct | 0945 | 0.25 | 0.01 |
| Make up casing running tool to casing hanger/pull bushings/lower through rotary table (will take 0.5 h) | 23 Oct | 0945 | 23 Oct | 1015 | 0.50 | 0.02 |
| Make up 1 stand of 8.25 inch drill collars (will take 0.25 h) | 23 Oct | 1015 | 23 Oct | 1030 | 0.25 | 0.01 |
| Deploy camera (will take 0.5 h) | 23 Oct | 1030 | 23 Oct | 1100 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1 h in 4425 m of water | 23 Oct | 1100 | 23 Oct | 1600 | 5.00 | 0.21 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1626 h | 23 Oct | 1600 | 23 Oct | 1630 | 0.50 | 0.02 |
| RIH with 10.75 inch casing | ||||||
| Pick up top drive and space out drill pipe (will take 0.5 h) | 23 Oct | 1630 | 23 Oct | 1700 | 0.50 | 0.02 |
| Trip: mudline to depth: from 0 to 65 mbsf, plus 0.5 h | 23 Oct | 1700 | 23 Oct | 1715 | 0.25 | 0.01 |
| Land 10.75 inch casing hanger at 1720 h | ||||||
| Work on cement pump (will take 0.5 h) | 23 Oct | 1715 | 23 Oct | 1845 | 1.50 | 0.06 |
| Cement casing shoe (will take 1.75 h); pump 20 bbl cement; attempt to leave cement 15 m above casing shoe | 23 Oct | 1845 | 23 Oct | 1930 | 0.75 | 0.03 |
| Cementing took longer than planned because of lumps in cement line; pumped 5 extra bbl | ||||||
| Release cone/casing hanger (will take 0.25 h) | 23 Oct | 1930 | 23 Oct | 1945 | 0.25 | 0.01 |
| Flush drill pipe (will take 1 h) | 23 Oct | 1945 | 23 Oct | 2030 | 0.75 | 0.03 |
| Set back top drive (will take 0.5 h) | 23 Oct | 2030 | 23 Oct | 2100 | 0.50 | 0.02 |
| POOH with drill string (will take 4 h) | 23 Oct | 2100 | 24 Oct | 0015 | 3.25 | 0.14 |
| Handle camera (will take 0.5 h) | 24 Oct | 0015 | 24 Oct | 0015 | 0.00 | 0.00 |
| Slip/Cut originally scheduled at 70 stands but conducted at 82 stands because of racker breakdown | ||||||
| Problem: spool valve manifold smoking; removed for repair or replacement | ||||||
| Slip/Cut drill line (will take 1.5 h) | 24 Oct | 0015 | 24 Oct | 0145 | 1.50 | 0.06 |
| Racker still broke down | ||||||
| Service rig and prepare core barrels | 24 Oct | 0145 | 24 Oct | 0445 | 3.00 | 0.13 |
| Spooler replaced, but now another hydraulic hose leaking and had to be replaced | ||||||
| Racker repaired and operational | ||||||
| POOH with drill string (will take 3 h) | 24 Oct | 0445 | 24 Oct | 0800 | 3.25 | 0.14 |
| Running tool cleared rotary table at 0825 h | ||||||
| Handle BHA, de-torque and lay out casing running tool, and lay out drill collars pups (will take 1.5 h) | 24 Oct | 0800 | 24 Oct | 0845 | 0.75 | 0.03 |
| Hole U1383C: RCB coring, Bit 1 | ||||||
| Make up RCB core barrel/center bit assembly (will take 1 h) | 24 Oct | 0845 | 24 Oct | 0915 | 0.50 | 0.02 |
| Make up RCB C-7 core bit and outer core barrel assembly (will take 1 h) | 24 Oct | 0915 | 24 Oct | 0930 | 0.25 | 0.01 |
| Space out core barrels (will take 0.5 h) | 24 Oct | 0930 | 24 Oct | 0945 | 0.25 | 0.01 |
| Install center bit (will take 0.5 h) | 24 Oct | 0945 | 24 Oct | 1000 | 0.25 | 0.01 |
| Handle BHA (will take 1 h) | 24 Oct | 1000 | 24 Oct | 1030 | 0.50 | 0.02 |
| Deploy camera (will take 0.5 h) | 24 Oct | 1030 | 24 Oct | 1100 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1.5 h in 4425 m of water | 24 Oct | 1100 | 24 Oct | 1600 | 5.00 | 0.21 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1605 h (reentry lasted ~10 min) | 24 Oct | 1600 | 24 Oct | 1600 | 0.00 | 0.00 |
| Recover camera (will take 1 h) | 24 Oct | 1600 | 24 Oct | 1730 | 1.50 | 0.06 |
| Trip: mudline to depth: from 0 to 60 mbsf, plus 0 h | 24 Oct | 1730 | 24 Oct | 1730 | 0.00 | 0.00 |
| Pick up top drive and space out drill pipe (will take 0.5 h) | 24 Oct | 1730 | 24 Oct | 1815 | 0.75 | 0.03 |
| Tag cement at 1820 h; 4469.0 mbrf/43.8 mbsf (1 m higher than calculated) | ||||||
| Drill out cement using RCB center bit (will take 2.25 h) | 24 Oct | 1815 | 24 Oct | 2115 | 3.00 | 0.13 |
| Broke out of cement at 4490 mbrf (64.8 mbsf), or 4.4 m below casing shoe | ||||||
| Clean out rathole to total depth (will take 0.25 h) | 24 Oct | 2115 | 24 Oct | 2130 | 0.25 | 0.01 |
| Circulation (will take 1.25 h) | 24 Oct | 2130 | 24 Oct | 2215 | 0.75 | 0.03 |
| Aft core line hanging up in oil saver/switch to forward line (will take 0.75 h) | 24 Oct | 2215 | 24 Oct | 2300 | 0.75 | 0.03 |
| Change to forward core line | ||||||
| Recover RCB center bit (will take 1.25 h) | 24 Oct | 2300 | 25 Oct | 0000 | 1.00 | 0.04 |
| Deploy RCB core barrel (will take 0.5 h) | 25 Oct | 0000 | 25 Oct | 0030 | 0.50 | 0.02 |
| SCR (will take 0.25 h) | 25 Oct | 0030 | 25 Oct | 0030 | 0.00 | 0.00 |
| Clean out hole to total depth at 70 mbsf (will take 1 h) | 25 Oct | 0030 | 25 Oct | 0130 | 1.00 | 0.04 |
| Move bit from 60 to 70 mbsf (will take 0 h) | 25 Oct | 0130 | 25 Oct | 0130 | 0.00 | 0.00 |
| RCB bit Run 1 (195 m; 58 bit rotating hours) | ||||||
| ROP taken from Site U1382 rate for RCB to 200 mbsf | ||||||
| Cut RCB Core 336-U1383C-2R (will take 4 h) | 25 Oct | 0130 | 25 Oct | 0300 | 1.50 | 0.06 |
| Problem stabbing sinker bars (will take 0.5 h) | 25 Oct | 0300 | 25 Oct | 0330 | 0.50 | 0.02 |
| RIH and recover Core 2R (will take 1.25 h); Core 336-U1383C-2R on deck at 0430 h, 20 Oct | 25 Oct | 0330 | 25 Oct | 0430 | 1.00 | 0.04 |
| Move bit from 70 to 76.6 mbsf (will take 0 h) | 25 Oct | 0430 | 25 Oct | 0430 | 0.00 | 0.00 |
| RCB core basement: 76.6–86.2 mbsf at 2.1 m/h; Core 336-U1383C-3R on deck at 1030 h | 25 Oct | 0430 | 25 Oct | 1030 | 6.00 | 0.25 |
| RCB core basement: 86.2–95.8 mbsf at 2.2 m/h; Core 336-U1383C-4R on deck at 1635 h | 25 Oct | 1030 | 25 Oct | 1630 | 6.00 | 0.25 |
| RCB core sediment: 95.8–105.4 mbsf at 2.2 m/h; Core 336-U1383C-5R on deck at 2230 h | 25 Oct | 1630 | 25 Oct | 2230 | 6.00 | 0.25 |
| RCB core basement: 105.4–115 mbsf at 2.2 m/h; Core 336-U1383C-6R on deck at 0310 h, 26 Oct | 25 Oct | 2230 | 26 Oct | 0315 | 4.75 | 0.20 |
| RCB core basement: 115–124.6 mbsf at 2.8 m/h; Core 336-U1383C-7R on deck at 0650 h | 26 Oct | 0315 | 26 Oct | 0645 | 3.50 | 0.15 |
| RCB core basement: 124.6–134.2 mbsf at 2.8 m/h; Core 336-U1383C-8R on deck at 1210 h | 26 Oct | 0645 | 26 Oct | 1215 | 5.50 | 0.23 |
| RCB core basement: 134.2–143.8 mbsf at 2.8 m/h; Core 336-U1383C-9R on deck at 1710 h | 26 Oct | 1215 | 26 Oct | 1715 | 5.00 | 0.21 |
| RCB core basement: 143.8–153.4 mbsf at 2.8 m/h; Core 336-U1383C-10R on deck at 2330 h | 26 Oct | 1715 | 26 Oct | 2330 | 6.25 | 0.26 |
| RCB core basement: 153.4–163.1 mbsf at 2.8 m/h; Core 336-U1383C-11R on deck at 0240 h, 27 Oct | 26 Oct | 2330 | 27 Oct | 0245 | 3.25 | 0.14 |
| RCB core basement: 163.1–172.7 mbsf at 2.8 m/h; Core 336-U1383C-12R on deck at 0610 h | 27 Oct | 0245 | 27 Oct | 0615 | 3.50 | 0.15 |
| RCB core basement: 172.7–182.3 mbsf at 2.8 m/h; Core 336-U1383C-13R on deck at 0950 h | 27 Oct | 0615 | 27 Oct | 0945 | 3.50 | 0.15 |
| RCB core basement: 182.3–191.9 mbsf at 4 m/h; Core 336-U1383C-14R on deck at 1335 h | 27 Oct | 0945 | 27 Oct | 1330 | 3.75 | 0.16 |
| RCB core basement: 191.9–192.8 mbsf at 4 m/h; Core 336-U1383C-15R on deck at 1605 h | 27 Oct | 1330 | 27 Oct | 1600 | 2.50 | 0.10 |
| Wiper trip: 192.8 mbsf to 60 mbsf and back | 27 Oct | 1600 | 27 Oct | 2130 | 5.50 | 0.23 |
| Deploy RCB core barrel and circulate mud sweep on bottom (will take 1 h) | 27 Oct | 2130 | 27 Oct | 2230 | 1.00 | 0.04 |
| RCB core basement: 192.8–201.4 mbsf at 3 m/h; Core 336-U1383C-16R on deck at 0605 h, 28 Oct | 27 Oct | 2230 | 28 Oct | 0300 | 4.50 | 0.19 |
| RCB core basement: 201.4–211.1 mbsf at 3 m/h; Core 336-U1383C-17R on deck at 0710 h | 28 Oct | 0300 | 28 Oct | 0715 | 4.25 | 0.18 |
| RCB core basement: 211.1–211.6 mbsf at 3 m/h; Core 336-U1383C-18R on deck at 0920 h | 28 Oct | 0715 | 28 Oct | 0915 | 2.00 | 0.08 |
| Circulation (will take 1 h) | 28 Oct | 0915 | 28 Oct | 0945 | 0.50 | 0.02 |
| Trip with top drive from 211.6 to 60 mbsf at 4 stands/h | 28 Oct | 0945 | 28 Oct | 1000 | 0.25 | 0.01 |
| Set back top drive (will take 0.5 h) | 28 Oct | 1000 | 28 Oct | 1030 | 0.50 | 0.02 |
| Clear seafloor at 1052 h | ||||||
| Trip: depth to surface: from 60 mbsf to surface, ±1.5 h in 4425 m of water | 28 Oct | 1030 | 28 Oct | 1630 | 6.00 | 0.25 |
| Handle BHA (will take 1 h) | 28 Oct | 1630 | 28 Oct | 1715 | 0.75 | 0.03 |
| Bit clears rotary table at 1720 h | ||||||
| Hole U1383C: RCB coring, Bit 2 | ||||||
| Penetration rate taken from DSDP rates in 1976 for similar depths with RCB | ||||||
| Inspect bit/float valve/support bearing and make up new RCB bit (will take 1 h) | 28 Oct | 1715 | 28 Oct | 1815 | 1.00 | 0.04 |
| Rig service/maintenance (will take 1 h) | 28 Oct | 1815 | 28 Oct | 1915 | 1.00 | 0.04 |
| Remove and repair hydraulic actuator assembly (air leak) (will take 8 h) | 28 Oct | 1915 | 29 Oct | 0315 | 8.00 | 0.33 |
| Make up new RCB bit assembly, space out core barrels, and pick up 3 drill collars; make up BHA (will take 2.25 h) | 29 Oct | 0315 | 29 Oct | 0530 | 2.25 | 0.09 |
| Reinstall repaired hydraulic actuator cylinder (will take 1 h) | 29 Oct | 0530 | 29 Oct | 0630 | 1.00 | 0.04 |
| Deploy camera (will take 0.5 h) | 29 Oct | 0630 | 29 Oct | 0700 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1 h in 4425 m of water | 29 Oct | 0700 | 29 Oct | 1230 | 5.50 | 0.23 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1231 h | 29 Oct | 1230 | 29 Oct | 1230 | 0.00 | 0.00 |
| Trip: mudline to depth: from 0 to 60 mbsf, plus 0 h | 29 Oct | 1230 | 29 Oct | 1330 | 1.00 | 0.04 |
| Recover camera (will take 0.5 h) | 29 Oct | 1330 | 29 Oct | 1415 | 0.75 | 0.03 |
| Pick up top drive and space out drill pipe (will take 1 h) | 29 Oct | 1415 | 29 Oct | 1515 | 1.00 | 0.04 |
| Trip with top drive from 60 to 211.6 mbsf at 4 stands/h | 29 Oct | 1515 | 29 Oct | 1715 | 2.00 | 0.08 |
| Circulation (will take 1.25 h) | 29 Oct | 1715 | 29 Oct | 1830 | 1.25 | 0.05 |
| Deploy RCB core barrel and record SCRs (will take 0.75 h) | 29 Oct | 1830 | 29 Oct | 1900 | 0.50 | 0.02 |
| Core with 30 ft knobbies because of water depth, sea state, and slow ROP | ||||||
| RCB core basement: 211.6–219.2 mbsf at 3 m/h; Core 336-U1383C-19R on deck at 2330 h | 29 Oct | 1900 | 29 Oct | 2330 | 4.50 | 0.19 |
| RCB core basement: 219.2–228.5 mbsf at 2.75 m/h; Core 336-U1383C-20R on deck at 0425 h, 30 Oct | 29 Oct | 2330 | 30 Oct | 0430 | 5.00 | 0.21 |
| RCB core basement: 228.5–237.7 mbsf at 2.75 m/h; Core 336-U1383C-21R on deck at 0800 h | 30 Oct | 0430 | 30 Oct | 0800 | 3.50 | 0.15 |
| RCB core basement: 237.7–247 mbsf at 2.75 m/h; Core 336-U1383C-22R on deck at 1130 h | 30 Oct | 0800 | 30 Oct | 1130 | 3.50 | 0.15 |
| RCB core basement: 247–256.2 mbsf at 2.75 m/h; Core 336-U1383C-23R on deck at 1915 h | 30 Oct | 1130 | 30 Oct | 1615 | 4.75 | 0.20 |
| Remove three knobbies, replace with drill pipe (will take 2 h) | 30 Oct | 1615 | 30 Oct | 1815 | 2.00 | 0.08 |
| Work pipe on bottom of hole/make connection/deploy core barrel (will take 1 h) | 30 Oct | 1815 | 30 Oct | 1845 | 0.50 | 0.02 |
| RCB core basement: 256.2–266.2 mbsf at 2.75 m/h; Core 336-U1383C-24R on deck at 2330 h | 30 Oct | 1845 | 30 Oct | 2330 | 4.75 | 0.20 |
| RCB core basement: 266.2–275.4 mbsf at 5.5 m/h; Core 336-U1383C-25R on deck at 0245 h, 31 Oct | 30 Oct | 2330 | 31 Oct | 0245 | 3.25 | 0.14 |
| RCB core basement: 275.4–284.7 mbsf at 3.5 m/h; Core 336-U1383C-26R on deck at 0645 h | 31 Oct | 0245 | 31 Oct | 0645 | 4.00 | 0.17 |
| RCB core basement: 284.7–294 mbsf at 2.75 m/h; Core 336-U1383C-27R on deck at 1135 h | 31 Oct | 0645 | 31 Oct | 1130 | 4.75 | 0.20 |
| RCB core basement: 294–299.2 mbsf at 1.3 m/h; Core 336-U1383C-28R on deck at 1630 h | 31 Oct | 1130 | 31 Oct | 1630 | 5.00 | 0.21 |
| RCB core basement: 299.2–303.7 mbsf at 2.5 m/h; Core 336-U1383C-29R on deck at 2005 h | 31 Oct | 1630 | 31 Oct | 2000 | 3.50 | 0.15 |
| RCB core basement: 303.7–312.1 mbsf at 1.9 m/h; Core 336-U1383C-30R on deck at 0230 h, 1 Nov | 31 Oct | 2000 | 1 Nov | 0230 | 6.50 | 0.27 |
| RCB core basement: 312.1–321.7 mbsf at 2 m/h; Core 336-U1373C-31R on deck at 0845 h | 1 Nov | 0230 | 1 Nov | 0845 | 6.25 | 0.26 |
| RCB core basement: 321.7–331.5 mbsf at 2.75 m/h; Core 336-U1383C-32R on deck at 1355 h | 1 Nov | 0845 | 1 Nov | 1400 | 5.25 | 0.22 |
| Circulation (will take 1 h) | 1 Nov | 1400 | 1 Nov | 1400 | 0.00 | 0.00 |
| Pump 30 bbl while cutting last meter of core | ||||||
| Wiper trip 1: 331.5–60 mbsf and back; numerous ledges and tight spots required reaming with top drive plus circulation; 4 m of fill on bottom; 70 bbl high-vis mud sweep | 1 Nov | 1400 | 2 Nov | 0130 | 11.50 | 0.48 |
| Circulation (will take 0.75 h) | 2 Nov | 0130 | 2 Nov | 0215 | 0.75 | 0.03 |
| Wiper trip 2: 331.5–60 mbsf and back; pull to casing shoe (no problems); RIH using motion compensator but no top drive; no hang-ups and no fill on bottom | 2 Nov | 0215 | 2 Nov | 0430 | 2.25 | 0.09 |
| Circulation (will take 0 h) | 2 Nov | 0430 | 2 Nov | 0430 | 0.00 | 0.00 |
| Wiper trip 3: 331.5–80 mbsf and back; same result as wiper trip 2 | 2 Nov | 0430 | 2 Nov | 0545 | 1.25 | 0.05 |
| Circulation (will take 0 h) | 2 Nov | 0545 | 2 Nov | 0545 | 0.00 | 0.00 |
| Trip: depth to surface: from 331.5 mbsf to surface, ±1 h in 4425 m of water | 2 Nov | 0545 | 2 Nov | 1245 | 7.00 | 0.29 |
| Clear seafloor at 0625 h | ||||||
| Handle BHA (will take 1 h) | 2 Nov | 1245 | 2 Nov | 1315 | 0.50 | 0.02 |
| Bit clears rotary table at 1315 h | ||||||
| Hole U1383C: downhole logging, hydrologic packer experiments, and depth check | ||||||
| Make up stand of 6.75 inch drill collars for CORK (will take 1 h) | 2 Nov | 1315 | 2 Nov | 1530 | 2.25 | 0.09 |
| Handle BHA (will take 2 h) | 2 Nov | 1530 | 2 Nov | 1645 | 1.25 | 0.05 |
| Deploy camera (will take 0.5 h) | 2 Nov | 1645 | 2 Nov | 1715 | 0.50 | 0.02 |
| Trip: surface to mudline, ±1 h in 4425 m of water | 2 Nov | 1715 | 2 Nov | 2345 | 6.50 | 0.27 |
| Maneuver ship for reentry (will take 0 h); reenter at 2342 h (3 min reentry) | 2 Nov | 2345 | 2 Nov | 2345 | 0.00 | 0.00 |
| Trip: mudline to depth: from 0 to 55 mbsf, plus 0.25 h | 2 Nov | 2345 | 3 Nov | 0000 | 0.25 | 0.01 |
| Rig up (will take 1 h) | 3 Nov | 0000 | 3 Nov | 0100 | 1.00 | 0.04 |
| Triple combination: log from 55 to 331.5 mbsf at 275 m/h | 3 Nov | 0100 | 3 Nov | 1245 | 11.75 | 0.49 |
| FMS-sonic: log from 55 to 331.5 mbsf at 275 m/h | 3 Nov | 1245 | 3 Nov | 2245 | 10.00 | 0.42 |
| Rig down (will take 1 h) | 3 Nov | 2245 | 3 Nov | 2315 | 0.50 | 0.02 |
| Pick up top drive and space out drill pipe (will take 0.75 h) | 3 Nov | 2315 | 4 Nov | 0015 | 1.00 | 0.04 |
| Packer testing: based on 2 injection tests per packer seat, reduced time allocated from 36 to 26 h | ||||||
| Packer: from 60 to 290 mbsf doing 3 tests (will take 11 h) | 4 Nov | 0015 | 4 Nov | 1100 | 10.75 | 0.45 |
| Packer Set 1 inside casing; 3 failed attempts (using up to 2200 psi); heave too high; packer slipping or deflating | ||||||
| Packer Set 2 in open hole at ~141 mbsf | ||||||
| Packer Set 3 in open hole at ~196 mbsf; couldn't get packer to seat; test canceled | ||||||
| Set back top drive (will take 0.5 h) | 4 Nov | 1100 | 4 Nov | 1130 | 0.50 | 0.02 |
| RIH for depth check (will take 0.5 h) | 4 Nov | 1130 | 4 Nov | 1200 | 0.50 | 0.02 |
| Move bit from 55 to 331.5 mbsf (will take 0 h) | 4 Nov | 1200 | 4 Nov | 1200 | 0.00 | 0.00 |
| Handle camera (will take 0.5 h) | 4 Nov | 1200 | 4 Nov | 1215 | 0.25 | 0.01 |
| Trip: depth to mudline: from 331.5 mbsf to mudline, plus 0 h | 4 Nov | 1215 | 4 Nov | 1315 | 1.00 | 0.04 |
| Clear seafloor at 1310 h | ||||||
| Hole U1383B: free-fall deployment of ROV platform; drill pipe vessel over to Hole U1383B | 4 Nov | 1315 | 4 Nov | 1330 | 0.25 | 0.01 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 1350 h | 4 Nov | 1330 | 4 Nov | 1345 | 0.25 | 0.01 |
| Recover camera from seafloor | 4 Nov | 1345 | 4 Nov | 1515 | 1.50 | 0.06 |
| Make up and drop ROV platform from surface (will take 2 h) | 4 Nov | 1515 | 4 Nov | 1645 | 1.50 | 0.06 |
| Deploy camera to seafloor | 4 Nov | 1645 | 4 Nov | 1815 | 1.50 | 0.06 |
| Observe ROV platform in reentry cone/pull clear of seafloor/prepare for slip and cut (will take 0.25 h) | 4 Nov | 1815 | 4 Nov | 1830 | 0.25 | 0.01 |
| Clear seafloor at 1818 h | ||||||
| Slip/cut drill line (will take 1.5 h) | 4 Nov | 1830 | 4 Nov | 2015 | 1.75 | 0.07 |
| Recover camera during slip and cut | ||||||
| Rig up CORK umbilicals in moonpool while POOH with drill string | 0.00 | 0.00 | ||||
| Trip: depth to surface: from (mudline) 0 mbsf to surface, ±1 h in 4425 m of water | 4 Nov | 2015 | 5 Nov | 0200 | 5.75 | 0.24 |
| Handle BHA (will take 1 h) | 5 Nov | 0200 | 5 Nov | 0300 | 1.00 | 0.04 |
| Hole U1383C: assemble/install CORK and OsmoSampler string | ||||||
| Make up CORK plumb bob with ten 15 ft long, 6.75 inch drill collars (will take 2 h) | 5 Nov | 0300 | 5 Nov | 0500 | 2.00 | 0.08 |
| Rig up for casing (will take 1 h) | 5 Nov | 0500 | 5 Nov | 0600 | 1.00 | 0.04 |
| Install crossovers, 5.5 inch casing pup, landing seat, and packer (will take 2 h) | 5 Nov | 0600 | 5 Nov | 0800 | 2.00 | 0.08 |
| Make up packer connections (will take 1 h) | 5 Nov | 0800 | 5 Nov | 0845 | 0.75 | 0.03 |
| Run 38.2 m of 4.5 inch fiberglass casing (will take 2 h) | 5 Nov | 0845 | 5 Nov | 1015 | 1.50 | 0.06 |
| Install second packer and make up hydraulic connections at both ends (will take 2 h) | 5 Nov | 1015 | 5 Nov | 1215 | 2.00 | 0.08 |
| Install 80 m of 4.5 inch fiberglass casing per plan (will take 2 h) | 5 Nov | 1215 | 5 Nov | 1415 | 2.00 | 0.08 |
| Install third packer and make up hydraulic connections (will take 2 h) | 5 Nov | 1415 | 5 Nov | 1630 | 2.25 | 0.09 |
| Install 48 m of 4.5 inch steel casing (will take 2 h) | 5 Nov | 1630 | 5 Nov | 1715 | 0.75 | 0.03 |
| Make up final umbilical terminations to CORK head (will take 2 h) | 5 Nov | 1715 | 5 Nov | 1915 | 2.00 | 0.08 |
| Hang-off CORK head on moonpool C-plates and remove CORK running tool (will take 1 h) | 5 Nov | 1915 | 5 Nov | 1945 | 0.50 | 0.02 |
| Make up and deploy instrument string (will take 1.5 h) | 5 Nov | 1945 | 5 Nov | 2115 | 1.50 | 0.06 |
| Make up CORK running tool and rig-up packer inflate line (will take 0.5 h) | 5 Nov | 2115 | 5 Nov | 2145 | 0.50 | 0.02 |
| Replace bushings. Pick up one stand of drill collars and lower CORK head below keel to equalize pressure. Raise head back to moonpool | 5 Nov | 2145 | 5 Nov | 2230 | 0.75 | 0.03 |
| Install OsmoSampler pump and close all valves (will take 0.75 h) | 5 Nov | 2230 | 5 Nov | 2315 | 0.75 | 0.03 |
| Remove moonpool grating and test-fit camera frame over CORK head (will take 0.75 h) | 5 Nov | 2315 | 6 Nov | 0000 | 0.75 | 0.03 |
| Handle BHA (will take 0.5 h) | 6 Nov | 0000 | 6 Nov | 0030 | 0.50 | 0.02 |
| Deploy camera (will take 0.5 h) | 6 Nov | 0030 | 6 Nov | 0100 | 0.50 | 0.02 |
| Trip: surface to mudline, plus 2 h in 4425 m of water | 6 Nov | 0100 | 6 Nov | 0915 | 8.25 | 0.34 |
| Maneuver ship for reentry (will take 0.5 h); reenter at 0941 h | 6 Nov | 0915 | 6 Nov | 0945 | 0.50 | 0.02 |
| RIH slowly, pick up top drive, space out and land CORK (will take 1.75 h); CORK lands at 1127 h | 6 Nov | 0945 | 6 Nov | 1130 | 1.75 | 0.07 |
| Recover camera frame and pressure up drill string to inflate CORK packers (will take 2.25 h) | 6 Nov | 1130 | 6 Nov | 1315 | 1.75 | 0.07 |
| Assemble ROV platform and make up with deployment tool and camera frame (will take 1.25 h) | 6 Nov | 1315 | 6 Nov | 1415 | 1.00 | 0.04 |
| Deploy camera with ROV platform (will take 3 h) | 6 Nov | 1415 | 6 Nov | 1630 | 2.25 | 0.09 |
| Monitor ROV release (will take 0.25 h) | 6 Nov | 1630 | 6 Nov | 1645 | 0.25 | 0.01 |
| Recover camera from seafloor | 6 Nov | 1645 | 6 Nov | 1800 | 1.25 | 0.05 |
| Remove slings from camera at surface | ||||||
| Remove ROV deployment slings and assembly (will take 0.5 h) | 6 Nov | 1800 | 6 Nov | 1830 | 0.50 | 0.02 |
| Deploy camera to seafloor | 6 Nov | 1830 | 6 Nov | 2015 | 1.75 | 0.07 |
| Release CORK (will take 0.25 h) | 6 Nov | 2015 | 6 Nov | 2015 | 0.00 | 0.00 |
| Survey CORK (will take 0.25 h) | 6 Nov | 2015 | 6 Nov | 2015 | 0.00 | 0.00 |
| Set back top drive (will take 0.5 h) | 6 Nov | 2015 | 6 Nov | 2045 | 0.50 | 0.02 |
| Trip: mudline to surface, ±1.5 h in 4425 m of water | 6 Nov | 2045 | 7 Nov | 0300 | 6.25 | 0.26 |
| Recover camera (will take 0.25 h) | 7 Nov | 0300 | 7 Nov | 0245 | –0.25 | –0.01 |
| Set back BHA and lay out CORK running tool (will take 0.25 h) | 7 Nov | 0245 | 7 Nov | 0315 | 0.50 | 0.02 |
| Hole U1383C totals: | 19 Oct | 1745 | 7 Nov | 0315 | 441.50 | 18.40 |
Times are given as local ship time, which is Universal Time Coordinated (UTC) – 3 h for all on-site operations. BHA = bottom-hole assembly. SCR = slow circulation rate. spm = strokes per minute, ROP = rate of penetration. POOH = pull out of hole, RIH = run in hole. TD = total depth. DSDP = Deep Sea Drilling Project. FMS = Formation MicroScanner.
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