Table T1. Operations summary, Site C0010.
| Hole C0010A |
| Latitude: 33°12.5981′N |
| Longitude: 136°41.1924′E |
| Water depth (m): 2523.7 |
| Seafloor (m): 2552 DRF (2523.7 mbsl) |
| 20 conductor pipe shoe (m): 2593 DRF (41 mbsf) |
| 9-5/8 casing screen interval (m): 2939–2961 DRF (387–409 mbsf) |
| 9-5/8 casing shoe (m): 3096 DRF (518 mbsf) |
| TD (m): 3107 DRF (555 mbsf) |
| Operation | Start | Depth DSF (m) | Comments | ||
|---|---|---|---|---|---|
| Date (2010) |
Local time (h) |
Top | Bottom | ||
| Hole C0010A | 0 | 560 | |||
| Prep tool, rig up, and RIH | 1 Nov | 2215 | Make up 5.5 inch DP and 5 inch DP stands | ||
| Run ROV survey | 2 Nov | 0145 | Prepare and launch ROV for diving and transponder setting | ||
| Recover ROV | 2 Nov | 0545 | ROV camera fault, recovered to troubleshoot and repair | ||
| Relaunch ROV | 2 Nov | 1400 | Relaunch ROV with 3 transponders, deploy transponders | ||
| Remove corrosion cap from well | 2 Nov | 1945 | Remove corrosion cap and place on seabed | ||
| Recover ROV | 2 Nov | 2045 | Recover ROV from seafloor | ||
| Calibrate DP | 2 Nov | 2300 | Set and calibrate DP | ||
| Move to LCA | 3 Nov | 0300 | Move Chikyu to LCA | ||
| Set DP mode | 3 Nov | 1130 | |||
| RIH casing packer retrieving assembly | 3 Nov | 1230 | 1445 h attach accelerometer to DP | ||
| Begin attaching anti-VIV ropes | 3 Nov | 1730 | Continue to RIH packer running tool from 1200 to 1400 m DRF | ||
| Continue to RIH | 4 Nov | 0445 | Attached Accelerometer 2 to DP at 1600 m DRF | ||
| Drift to Site C0010 | 4 Nov | 1045 | Observing drill pipe for VIV while drifting | ||
| Resume running packer running tool | 5 Nov | 0030 | Running DP while attaching anti-VIV ropes | ||
| Launch ROV | 5 Nov | 0215 | ROV launched 2 nmi from site | ||
| Reenter wellhead | 5 Nov | 1215 | Running tool run into well | ||
| Lower string to casing packer | 5 Nov | 1730 | Tag and touch down on casing packer | ||
| POOH from 2890 to 2734 m DRF | 5 Nov | 2000 | Pull up and retrieve packer assembly | ||
| POOH running tool and SmartPlug | 6 Nov | 0230 | Packer and SmartPlug visually confirmed by ROV camera | ||
| Drift while recovering | 6 Nov | 0235 | Drifting with current as packer assembly is recovered | ||
| Recover ROV | 6 Nov | 1030 | ROV brought back on deck | ||
| Recover Accelerometer 1 | 7 Nov | 0820 | |||
| Recover Accelerometer 2 | 7 Nov | 1250 | |||
| Recover and lay out packer and SmartPlug | 7 Nov | 1415 | Casing packer and SmartPlug recovered and laid out on deck | ||
| Prepare casing scraper assembly | 7 Nov | 1430 | Casing scraper assembly readied and racked | ||
| RIH casing scraper assembly | 7 Nov | 2300 | Casing scraper run to 480 m DRF | ||
| Pull out to 1000 m DRF | 8 Nov | 0215 | High current dictated POOH and LCA movement | ||
| Resume casing scraper run | 8 Nov | 0700 | Resume RIH to 2283 m DRF with drifting | ||
| Launch ROV | 8 Nov | 1030 | |||
| Continue to RIH scraping assembly | 8 Nov | 1130 | Continue to RIH casing scraper to 2543 m DRF | ||
| Recover ROV | 8 Nov | 1215 | Camera cable loose, needing troubleshooting | ||
| Stop Chikyu drifting and dive ROV | 8 Nov | 2200 | |||
| RIH casing scraper assembly | 8 Nov | 2330 | RIH to 2400 m DRF | ||
| RIH casing scraper assembly into wellhead | 9 Nov | 0115 | RIH to 2933 m DRF, 2 scraper runs | ||
| Circulate bottoms up | 9 Nov | 0115 | |||
| POOH wellhead | 9 Nov | 0145 | Clear wellhead and begin drifting | ||
| Recover ROV | 9 Nov | 0400 | Leave corrosion cap on seafloor | ||
| Move to LCA | 9 Nov | 1030 | Pick up and rack stands | ||
| Start drifting | 9 Nov | 1745 | |||
| Pick up casing packer and GeniusPlug | 9 Nov | 1915 | 2 joints of tubing bent while lying down, bent back | ||
| RIH casing packer assembly | 9 Nov | 2015 | RIH to 1550 m DRF | ||
| Dive ROV | 11 Nov | 0800 | Dive ROV and check BHA | ||
| Resume running packer running tool | 11 Nov | 0815 | Running casing packer from 2400 to 2536 m DRF | ||
| Shift Chikyu to reenter Hole C0010A | 11 Nov | 1030 | |||
| Reenter wellhead with GeniusPlug | 11 Nov | 1100 | RIH casing packer and GeniusPlug past wellhead | ||
| Run casing packer to setting depth | 11 Nov | 1545 | Casing packer run to 2938 m DRF | ||
| Set A3 packer at 2950 m DRF | 11 Nov | 1710 | Casing packer set at 373 mbsf, bottom of GeniusPlug at 395 mbsf | ||
| Displace hole with suspension fluid | 11 Nov | 1715 | Place 20 kL of suspension fluid | ||
| POOH to 2550 m DRF | 11 Nov | 2400 | Confirm L10 running tool on BHA | ||
| Use ROV to pick up corrosion cap | 12 Nov | 0015 | ROV on deck at 0200 h with corrosion cap | ||
| Resume POOH to surface with drifting | 12 Nov | 1045 | |||
| Dive ROV to set corrosion cap | 12 Nov | 1500 | Corrosion cap set at 1600 h | ||
| Use ROV to recover transponders | 12 Nov | 2330 | All 4 transponders recovered | ||
| Retrieve ROV on deck | 12 Nov | 2330 | |||
| Begin transit to Site C0002 | 12 Nov | 2330 | Arrived at Site C0002 at 2400 h | ||
DRF = drilling depth below rig floor, mbsl = meters below sea level, mbsf = meters below seafloor, DSF = drilling depth below seafloor. TD = total depth. DP = dynamic positioning. RIH = run in hole, POOH = pull out of hole. ROV = remotely operated vehicle. LCA = low-current area, VIV = vortex-induced vibration. BHA = bottom-hole assembly.