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Table T1. Expedition 327 operations summary. (See table notes.)

  Operational task Start End Task time
Date (2010) Local ship time (h) Date (2010) Local ship time (h) h Days
Depart Victoria, British Columbia (Canada), and transit 196 nmi to Site U1362 9 Jul 1215 10 Jul 0815 20.00 0.8
Site U1362 (SR-2)            
Jet-in test in Hole U1362B 10 Jul 0815 11 Jul 1130 27.25 1.1
Jet-in test in Hole U1362A 11 Jul 1130 12 Jul 0815 20.75 0.9
Hole U1362A (SR-2A) Stage 1            
Install reentry cone and 20 inch casing 12 Jul 0815 13 Jul 1800    
Make up BHA with underreamer cutters set to 21-1/2 inch diameter; run in hole 13 Jul 1800 14 Jul 0345    
Drill 21-1/2 inch hole for 16 inch casing to 235.7 mbsf (18-1/2 inch hole to 242 mbsf)* 13 Jul 1800 15 Jul 0915    
Install 16 inch casing 15 Jul 0915 15 Jul 2315    
Cement 16 inch casing shoe and annulus 15 Jul 2315 16 Jul 0345    
Pull out of hole 16 Jul 0345 16 Jul 0930 97.25 4.1
Hole U1362B (SR-2B) Stage 1            
Install reentry cone and 20 inch casing 16 Jul 0930 17 Jul 1630    
Make up BHA with underreamer cutters set to 21-1/2 inch diameter; run in hole 17 Jul 1630 18 Jul 0145    
Drill 21-1/2 inch hole for 16 inch casing to 243.7 mbsf (18-1/2 inch hole to 250 mbsf)* 18 Jul 0145 19 Jul 0630    
Install 16 inch casing 19 Jul 0630 19 Jul 1900    
Cement 16 inch casing shoe and annulus 19 Jul 1900 19 Jul 2015    
Pull out of hole 19 Jul 2015 20 Jul 0330 90.00 3.8
Hole U1362A (SR-2A) Stage 2            
Make up 14-3/4 inch drilling assembly; run in hole 20 Jul 0330 20 Jul 1645    
Drill out cement 20 Jul 1645 20 Jul 2400    
Drill 14-3/4 inch hole for 10-3/4 inch casing 20 Jul 2400 24 Jul 0340    
Install 10-3/4 inch casing 24 Jul 0340 26 Jul 0530    
Cement 10-3/4 inch casing 26 Jul 0530 26 Jul 0730    
Pull out of hole 26 Jul 0730 26 Jul 1245 153.25 6.4
Hole U1362B (SR-2B) Stage 2            
Make up 14-3/4 inch drilling assembly; run in hole 26 Jul 1245 26 Jul 2145    
Drill out cement 26 Jul 2145 27 Jul 0100    
Drill 14-3/4 inch hole for 10-3/4 inch casing 27 Jul 0100 28 Jul 0215    
Install 10-3/4 inch casing 28 Jul 0215 28 Jul 1330    
Cement 10-3/4 inch casing 28 Jul 1330 28 Jul 1515    
Pull out of hole 28 Jul 1515 28 Jul 2030    
Make up 9-7/8 inch drilling assembly; run in hole 28 Jul 2030 29 Jul 0500    
Drill out cement to 10 m above casing shoe 29 Jul 0500 29 Jul 1815    
Pull out of seafloor 29 Jul 1815 29 Jul 1900 78.25 3.3
Hole U1362A (SR-2A) Stage 3            
Run in hole with 9-7/8 inch drilling assembly 29 Jul 1900 30 Jul 0230    
Drill out cement 30 Jul 0230 30 Jul 0730    
Condition hole 30 Jul 0730 31 Jul 0900    
Make up 9-7/8 inch RCB assembly; run in hole 31 Jul 0900 31 Jul 2215    
RCB core from 346 to 496 mbsf 31 Jul 2215 9 Aug 1400    
Make up 9-7/8 inch drilling assembly; run in hole 9 Aug 1400 9 Aug 2400    
Drill 9-7/8 inch hole to 528 mbsf; stand by and conduct open hole depth check 9 Aug 2400 11 Aug 1845    
Make up wireline logging/packer BHA; run in hole 11 Aug 1845 12 Aug 0330    
Rig up Schlumberger line and make up logging tool string 12 Aug 0330 12 Aug 0545    
Wireline log with three passes 12 Aug 0545 12 Aug 1645    
Conduct open hole depth check 12 Aug 1645 12 Aug 1900    
Conduct packer flow test 12 Aug 1900 13 Aug 1800    
Make up CORK assembly with 4-1/2 inch casing, packers, miniscreens, and umbilicals 13 Aug 1800 15 Aug 1630    
Deploy OsmoSamplers, sinker bar, and Spectra rope with thermistors 15 Aug 1630 16 Aug 0600    
Install CORK and pressure up packers 16 Aug 0600 16 Aug 1600    
Deploy ROV platform and release CORK head 16 Aug 1600 17 Aug 0600    
Pull out of hole 17 Aug 0600 17 Aug 1045 447.75 18.7
Hole U1301B            
Run in hole with CORK recovery tool 17 Aug 1045 17 Aug 1615    
Engage CORK head and recover partial instrument string 17 Aug 1615 17 Aug 1945    
Run in hole for depth check and temperature profile 17 Aug 1945 18 Aug 0145    
Deploy replacement instrument string 18 Aug 0145 18 Aug 0530 18.75 0.8
Hole 1027C            
First (failed) attempt to recover CORK 18 Aug 0530 18 Aug 1830    
Manufacture modified CORK recovery tool 18 Aug 1830 20 Aug 0600    
Second (failed) attempt to recover CORK 20 Aug 0600 20 Aug 1600    
Pull out of hole 20 Aug 1600 20 Aug 2130 64.00 2.7
Hole U1362B (SR-2B) Stage 3            
Make up 9-7/8 inch drilling assembly; run in hole 20 Aug 2130 21 Aug 0730    
Drill out cement 21 Aug 0730 21 Aug 1030    
Drill 9-7/8 inch hole to 339 mbsf 21 Aug 1030 22 Aug 2200    
Make up tracer injection BHA with instrument package; run in hole 22 Aug 2200 23 Aug 0900    
First attempt at 24 h flow test and tracer injection experiment 23 Aug 0900 23 Aug 1700    
Make up 9-7/8 inch drilling assembly; run in hole 23 Aug 1700 24 Aug 1315    
Deepen 9-7/8 inch hole to 359 mbsf 24 Aug 1315 25 Aug 2100    
Make up tracer injection BHA with instrument package; run in hole 25 Aug 2100 26 Aug 0800    
Conduct 24 h flow test and tracer injection experiment 26 Aug 0800 27 Aug 1000    
Pull out of hole; remove instrument package 27 Aug 1000 27 Aug 1615    
Make up 9-7/8 inch drilling assembly; run in hole; conduct depth check 27 Aug 1615 27 Aug 2400    
Pull out of hole 27 Aug 2400 28 Aug 0530    
Make up CORK assembly with 4-1/2 inch casing, packers, miniscreens, and umbilicals 28 Aug 0530 29 Aug 0200    
Deploy OsmoSamplers, sinker bar, and Spectra rope with thermistors 29 Aug 0200 29 Aug 1315    
Install CORK and pressure up packers 29 Aug 1315 29 Aug 1545    
Deploy ROV platform and release CORK head 29 Aug 1545 29 Aug 2230    
Recover positioning beacon from seafloor 29 Aug 2230 30 Aug 0300    
Pull out of hole; secure rig for transit 30 Aug 0300 30 Aug 1300 231.50 9.6
Transit to Grizzly Bare site 30 Aug 1300 30 Aug 1615 3.25 0.1
Site U1363 (GRB-1A to GRB-3A)            
Make up APC/XCB drilling assembly; run in hole 30 Aug 1615 30 Aug 2130    
Hole U1363A: drill without coring to 58 mbsf 30 Aug 2130 31 Aug 0330 11.25 0.5
Hole U1363B: APC/XCB core to 61 mbsf; 4 APCT-3 and 1 SET deployments 31 Aug 0330 31 Aug 2145 18.25 0.8
Hole U1363C: drill to 150 mbsf; XCB core to 203 mbsf; 3 SET deployments 31 Aug 2145 2 Sep 0100 27.25 1.1
Hole U1363D: drill to 198 mbsf; XCB core to 231.8 mbsf 2 Sep 0100 3 Sep 0700 30.00 1.3
Hole U1363E: drill without coring to 37 mbsf 3 Sep 0700 3 Sep 1130 4.50 0.2
Hole U1363F: APC core to 35 mbsf; 2 APCT-3 deployments 3 Sep 1130 3 Sep 1730 6.00 0.3
Hole U1363G: APC core to 24.9 mbsf; 1 APCT-3 deployment 3 Sep 1730 4 Sep 1015 16.75 0.7
Transit to Victoria, British Columbia (Canada) 4 Sep 1015 5 Sep 0845 22.50 0.9
Totals:
1388.50 58.10

Notes: * = for both 21½ inch holes, an 18½ hole was cut 6.3 m deeper with a tricone bit. Local ship time = UTC – 7 h. BHA = bottom-hole assembly. ROV = remotely operated vehicle, CORK = subseafloor borehole observatory. RCB = rotary core barrel, APC = advanced piston corer, XCB = extended core barrel. APCT-3 = third-generation advanced piston corer temperature tool, SET = sediment temperature tool. Site U1362 total time was 47.7 days.

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