Table T1. Operations summary, Site C0002.
| Hole C0002G |
| Latitude: 33°18.0130′N |
| Longitude: 136°38.1500′E |
| Water depth (m): 1936 |
| Seafloor (m): 1966 DRF (1937.5 mbsl) |
| 20 inch conductor pipe shoe (m): 2007 DRF (41 mbsf) |
| 9-5/8 inch casing screen interval (m): 2723–2746 DRF (757–780 mbsf) |
| 9-5/8 inch casing shoe (m): 2854 DRF (888 mbsf) |
| TD (m): 2946 DRF (980 mbsf) |
| Operation | Start | Depth DSF (m) | Comments | ||
|---|---|---|---|---|---|
| Date (2010) |
Local time (h) |
Top | Bottom | ||
| Hole C0002G | 0 | 980 | |||
| Prep tool, rig up, and RIH | 13 Nov | 0030 | Lower Big Head transducers and check transponders | ||
| Transit to LCA | 13 Nov | 0130 | Make up jetting BHA, prepare 20 inch conductor casing | ||
| Run 20 inch conductor casing | 13 Nov | 0615 | Pick up 20 inch casing shoe jetting joint | ||
| 1100 | Pick up Jetting BHA and run into 20 inch casing | ||||
| Run mudmat into moonpool | 13 Nov | 1100 | |||
| Pick up and secure mudmat on working cart | 13 Nov | 1300 | Current increase, so necessary to recover mudmat | ||
| Move vessel 21 nmi northwest | 13 Nov | 1330 | Reach LCA at 1800 h | ||
| Resume running 20 inch casing to 110 m DRF | 13 Nov | 1800 | Dove ROV to confirm jet sub projection | ||
| Begin attaching and terminating anti-VIV ropes | 13 Nov | 2200 | |||
| Resume running 20 inch casing to 1513 m DRF | 13 Nov | 2330 | |||
| Run 20 inch conductor casing | 14 Nov | 0330 | Run to 1860 m DRF while attaching ropes | ||
| Dive ROV | 14 Nov | 1745 | |||
| Monitor drill string for VIV | 14 Nov | 2030 | Drifting to Site C0002 | ||
| Resume running 20 inch casing | 15 Nov | 1000 | Run to 1956 m DRF | ||
| Tag seafloor, confirm hole position | 15 Nov | 1215 | ROV survey of seabed | ||
| Jet-in 20 inch casing | 15 Nov | 1300 | 0 | 40.9 | Jet to 40.9 mbsf |
| Release cart | 15 Nov | 1630 | |||
| Pick up BHA to 1970 m DRF | 15 Nov | 1730 | |||
| POOH jetting assembly to 1156 m DRF | 15 Nov | 1830 | Begin removing anti-VIV ropes | ||
| Recover ROV on deck | 15 Nov | 2130 | |||
| Finish anti-VIV ropes at 1430 m DRF | 15 Nov | 2315 | |||
| POOH jetting assembly to surface | 16 Nov | 0330 | |||
| Make up lower guide horn in moonpool | 16 Nov | 1045 | |||
| Make up and RIH 12-1/4 inch BHA to 92 m DRF | 16 Nov | 1900 | |||
| Run shallow test for LWD and MWD | 16 Nov | 2100 | |||
| Start drifting | 16 Nov | 2245 | |||
| RIH to 1800 m DRF | 17 Nov | 0415 | RIH from 92 to 1800 m DRF while drifting to Hole C0002G | ||
| Drift to Hole C0002G | 17 Nov | 0815 | |||
| Run to 1965 m DRF | 17 Nov | 0945 | |||
| Reenter wellhead | 17 Nov | 0945 | |||
| Ream to 2007 m DRF | 17 Nov | 1030 | |||
| Drill 12-1/4 inch LWD hole to 2267 m DRF | 17 Nov | 2400 | 0 | 301 | ROP 40 m/h |
| Drill 12-1/4 inch LWD hole to 2573 m DRF | 18 Nov | 1145 | 0 | 607 | ROP 40 m/h. Pump 5 m3 Hi-Vis mud every half-stand |
| Sweep and circulate to clean hole | 18 Nov | 1230 | Hi-Vis mud 10 m3 | ||
| Short trip to 20 inch casing shoe | 18 Nov | 1430 | |||
| Run back to bottom | 18 Nov | 1830 | |||
| Resume drilling 12-1/4 inch hole to 2675 m DRF | 18 Nov | 2400 | 0 | 709 | Below 2620 m DRF ROP reduced to 30 m/h |
| Drill 12-1/4 inch LWD hole to 2858 m DRF | 19 Nov | 1045 | 0 | 892 | ROP controlled at 30 m/h |
| Sweep Hi-Vis mud and circulate to clean hole | 19 Nov | 1145 | Sweep 10 m3 | ||
| Spot 60 m3 Hi-Vis mud | 19 Nov | 1230 | |||
| POOH to 1810 m DRF | 19 Nov | 1530 | |||
| ROV on deck | 19 Nov | 1640 | |||
| Resume POOH while drifting | 19 Nov | 2015 | |||
| POOH to rig floor | 20 Nov | 0100 | Lay out 12-1/4 inch BHA | ||
| Make up and RIH 10-5/8 inch LWD BHA | 20 Nov | 0800 | Run to 1800 m DRF | ||
| Move to location, dive ROV 1 nmi from Hole C0002G | 20 Nov | 1030 | |||
| Resume RIH to 1993 m DRF | 20 Nov | 1130 | |||
| RIH to 2830 m DRF | 20 Nov | 1530 | |||
| Relog from 2788 to 2804 and 2833 to 2858 m DRF | 20 Nov | 1900 | |||
| Drill 10-5/8 inch LWD hole to 2912 m DRF | 20 Nov | 2400 | 0 | 946 | Average ROP 22.1 m/h |
| Drill 10-5/8 inch LWD hole to 2946 m DRF | 21 Nov | 0230 | 0 | 980 | Average ROP 14.6 m/h |
| Circulate to clean hole, Hi-Vis mud | 21 Nov | 0445 | |||
| POOH to 2862 m DRF, relog LWD from 2859 m DRF | 21 Nov | 0600 | LWD data merge for 2859–2830 m DRF LWD run | ||
| Trip to 2500 m DRF | 21 Nov | 0715 | |||
| Ream to bottom | 21 Nov | 0900 | |||
| Circulate bottoms up | 21 Nov | 1200 | Sweep Hi-Vis mud, 10 m3 | ||
| Run back to bottom | 21 Nov | 1815 | No excess drag | ||
| Sweep out Hi-Vis mud 10 m3 | 21 Nov | 1900 | |||
| Spot Hi-Vis mud 104 m3 | 21 Nov | 2015 | |||
| POOH to 1870 m DRF | 21 Nov | 2400 | |||
| Continue POOH 10-5/8 inch LWD BHA | 22 Nov | 0615 | |||
| Prepare for running casing | 22 Nov | 0845 | |||
| Run 9-5/8 inch casing to 130 m DRF | 22 Nov | 1730 | |||
| Replace PS-30 to manual slip | 22 Nov | 1830 | |||
| Drift to Hole C0002G | 22 Nov | 2300 | |||
| Resume running 9-5/8 inch casing to 885 m DRF | 22 Nov | 2315 | |||
| Run inner string to float collar | 23 Nov | 0300 | |||
| Pick up DP S150 with XO sub | 23 Nov | 0345 | |||
| Dive ROV | 23 Nov | 0510 | |||
| Connect casing hanger running tool to 9-5/8 inch casing hanger | 23 Nov | 0530 | |||
| Break circulation with leak test | 23 Nov | 0600 | |||
| Recover ROV on deck | 23 Nov | 0625 | |||
| Run 9-5/8 inch casing to 1360 m DRF | 23 Nov | 0715 | |||
| Run 9-5/8 inch casing to 1830 m DRF | 23 Nov | 2000 | Run with anti-VIV ropes | ||
| Install upper guide horn | 23 Nov | 2300 | |||
| Drift to Hole C0002G | 23 Nov | 2400 | |||
| Drift to Hole C0002G | 24 Nov | 2400 | Drifting for 24 h | ||
| Drift to Hole C0002G | 25 Nov | 0215 | No VIV observed | ||
| RIH to 1956 m DRF, prepare to reenter hole | 25 Nov | 0300 | |||
| RIH to 2853 m DRF | 25 Nov | 0530 | |||
| Hook up cementing line | 25 Nov | 0600 | |||
| Land 18-3/4 inch and 9-5/8 inch casing hanger on wellhead | 25 Nov | 0615 | |||
| Cement 9-5/8 inch casing | 25 Nov | 0930 | |||
| Release casing hanger running tool | 25 Nov | 0945 | |||
| POOH to 1918 m DRF | 25 Nov | 1215 | |||
| Move rig to 50 m offset | 25 Nov | 1230 | |||
| Drop sponge ball and circulate | 25 Nov | 1245 | |||
| Recover ROV on deck | 25 Nov | 1330 | |||
| Rig down upper guide horn | 25 Nov | 1530 | |||
| POOH to 1795 m DRF | 25 Nov | 1600 | |||
| POOH to 1360 m DRF, removing ropes | 25 Nov | 2045 | |||
| Continue POOH to 265 m DRF | 25 Nov | 2400 | |||
| Continue POOH to surface | 26 Nov | 0045 | |||
| Pick up cement stand and inspect cement head | 26 Nov | 0200 | Observe wiper plug stuck above drop indicator | ||
| Move to Shimizu Port | 26 Nov | 0200 | |||
| Standby 7 nmi off Shimizu Port | 27 Nov | 0030 | |||
| Port call | 27 Nov | 0700 | |||
| Leave Shimizu Port | 27 Nov | 2000 | |||
| Move to 7 nmi upstream of Hole C0002G | 28 Nov | 1730 | |||
| Stop vessel set DP mode, install ROV cursor | 28 Nov | 2030 | |||
| Run drill-out cement assembly to 1143 m DRF | 28 Nov | 2030 | |||
| Continue to RIH drill-out assembly to 1860 m DRF | 29 Nov | 0130 | |||
| Dive ROV | 29 Nov | 0315 | |||
| Drift to Hole C0002G | 29 Nov | 0430 | |||
| RIH to 2826 m DRF | 29 Nov | 0730 | |||
| Drill out cement | 29 Nov | 0830 | Ream around float shoe three times. Float shoe bottom 2853 m DRF | ||
| Wash down to 2937 m DRF | 29 Nov | 0930 | |||
| Sweep 10 kL Hi-Vis mud pill and spot 15 kL of Hi-Vis mud pill on bottom | 29 Nov | 1030 | |||
| Short trip to 9-5/8 inch float shoe | 29 Nov | 1100 | |||
| RIH to 2943 m DRF | 29 Nov | 1215 | |||
| Pump 90 spm and sweep out with 10 m3 Hi-Vis mud | 29 Nov | 1315 | |||
| Pick up to 2930 m DRF. Spot NaCl and protect zone | 29 Nov | 1530 | |||
| Drop Churchill drift gauge at 2930 m DRF and POOH to wellhead | 29 Nov | 1715 | |||
| POOH to surface with drifting | 29 Nov | 2200 | |||
| Move vessel 20 nmi northwest from Hole C0002G | 29 Nov | 2400 | |||
| Pick up CORK running tool and make up with pup joint and XO | 30 Nov | 0500 | |||
| Install two wiper plugs and rack cement stand | 30 Nov | 0645 | |||
| Rig down upper guide horn | 30 Nov | 0730 | |||
| Prepare for running completion assembly | 30 Nov | 1000 | |||
| Run completion assembly | 30 Nov | 2300 | |||
| Continue to run completion assembly | 1 Dec | 0000 | Run completion assembly to 49 m DRF | ||
| Connect and terminate 3 cables, flatpack, and thermistor string | 1 Dec | 0700 | |||
| Run 2 joints of 3.5 inch tubing, attaching 4 centralizers per joint | 1 Dec | 2145 | |||
| Run completion assembly from 90 to 206 m DRF | 2 Dec | 0000 | |||
| Pick up and make up swellable packer joint and 2 joints tubing | 2 Dec | 1400 | |||
| Install 3 electric cables and flatpack into swellable packer | 2 Dec | 1630 | |||
| Test 3 cables after installation into packer | 2 Dec | 2215 | |||
| Resume running completion assembly from 220 to 227 m DRF | 2 Dec | 2300 | |||
| Continue to run completion assembly to 335 m DRF | 3 Dec | 0000 | |||
| Troubleshoot on hydraulic unit of working cart | 3 Dec | 0500 | |||
| Run completion assembly from 335 to 948 m DRF | 3 Dec | 0830 | |||
| Take off quick lifting tool and prepare for CORK pick-up | 4 Dec | 0000 | |||
| Pick up CORK running tool and engage on CORK | 4 Dec | 0045 | |||
| Make up CORK on 3.5 inch tubing | 4 Dec | 0145 | |||
| Lower CORK to moonpool | 4 Dec | 0200 | |||
| Test 3 cables prior to termination | 4 Dec | 0400 | |||
| Mark and measure 3 control lines and terminate | 4 Dec | 0500 | |||
| Wind all cables and flatpack to winches | 4 Dec | 0645 | |||
| Terminate electrical cables on CORK | 4 Dec | 0730 | |||
| Continue termination on cables | 5 Dec | 0000 | |||
| Connect 3 hydraulic lines on CORK | 5 Dec | 0600 | |||
| Install 3 ODI connectors and cables to CORK | 5 Dec | 0830 | |||
| Prepare to install ROV platform | 5 Dec | 1400 | |||
| Drift 22 nmi to Hole C0002G | 5 Dec | 1530 | |||
| Install ROV platform | 5 Dec | 1645 | |||
| Run 1 stand of DP to 1010 m DRF | 5 Dec | 1945 | |||
| RIH to 1010 m DRF, install Accelerometer 1 | 5 Dec | 2030 | |||
| RIH to 1300 m DRF, dive ROV | 5 Dec | 2230 | |||
| Attach 4 ropes on drill string, recover ROV | 5 Dec | 2245 | |||
| RIH completion assembly 1300–1417 m DRF | 6 Dec | 0000 | |||
| Engage ODI connectors and test 3 cables with ROV | 6 Dec | 0200 | |||
| Resume RIH from 1417 to 1800 m DRF | 6 Dec | 0430 | |||
| Continue drifting to Hole C0002G | 6 Dec | 0830 | |||
| Continue drifting to Hole C0002G | 7 Dec | 0000 | |||
| Continue drifting to Hole C0002G | 8 Dec | 0000 | |||
| Run completion string from 1800 to 1897 m DRF | 8 Dec | 0045 | |||
| Continue drifting to Hole C0002G | 8 Dec | 0200 | |||
| Test 3 cables by ROV | 8 Dec | 0430 | |||
| Check completion assembly condition | 8 Dec | 0515 | |||
| Resume RIH to 1963 m DRF | 8 Dec | 0615 | |||
| Adjust vessel position and reenter wellhead | 8 Dec | 0845 | |||
| Resume RIH to 2904 m DRF | 8 Dec | 0915 | |||
| Pick up and make up cement stand connect to HPS | 8 Dec | 1945 | |||
| Land CORK head on wellhead | 8 Dec | 2015 | |||
| Connect ODI connector and test tiltmeter and strainmeter | 8 Dec | 2015 | |||
| Pump 64 m3 of seawater | 8 Dec | 2215 | |||
| Continue to mix cement slurry, total 44 bbl | 9 Dec | 0045 | |||
| Complete cementing | 9 Dec | 0230 | |||
| Set unjay stopper and release CORK running tool | 9 Dec | 0330 | |||
| Rack back cement stand, move vessel 30 nmi south | 9 Dec | 0415 | |||
| Drop sponge ball and circulation | 9 Dec | 0430 | |||
| POOH CORK running tool to 1720 m DRF | 9 Dec | 0500 | |||
| Recover ROV on deck | 9 Dec | 0750 | |||
| Recover CORK running tool on surface | 9 Dec | 1355 | |||
| Dive ROV for pressure unit testing | 9 Dec | 1825 | |||
| Test pressure unit | 9 Dec | 1910 | |||
| Recover ROV on deck | 9 Dec | 0750 | |||
| Dive ROV to recover transponders | 9 Dec | 1825 | |||
| Recover ROV on deck | 9 Dec | 2030 | |||
DRF = drilling depth below rig floor, mbsl = meters below sea level, mbsf = meters below seafloor, DSF = drilling depth below seafloor. TD = total depth. RIH = run in hole, POOH = pull out of hole. LCA = low-current area. VIV = vortex-induced vibration. ROV = remotely operated vehicle. LWD = logging while drilling, MWD = measurement while drilling. BHA = bottom-hole assembly. DP = dynamic positioning. XO = crossover. ODI = Ocean Design, Inc. bbl = 42 gallon barrel. CORK = circulation obviation retrofit kit.
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