Close   |    Next

Table T1. Operations summary, Site C0001. (See table notes.)

Hole C0001A
Latitude: 33°14.2945′N
Longitude: 136°42.7139′E
Seafloor (drill pipe measurement from rig floor, m): 2228
Distance between rig floor and sea level (m): 28.5
Water depth (drill pipe measurement from sea level, m): 2199.5
Hole C0001B
Latitude: 33°14.3135′N
Longitude: 136°42.7252′E
Seafloor (drill pipe measurement from rig floor, m): 2217.4
Distance between rig floor and sea level (m): 28.5
Water depth (drill pipe measurement from sea level, m): 2188.9
Hole C0001C
Latitude: 33°14.3345′N
Longitude: 136°42.7014′E
Seafloor (drill pipe measurement from rig floor, m): 2226.5
Distance between rig floor and sea level (m): 28.5
Water depth (drill pipe measurement from sea level, m): 2198
Hole C0001D
Latitude: 33°14.3286′N
Longitude: 136°42.7040′E
Seafloor (drill pipe measurement from rig floor, m): 2226
Distance between rig floor and sea level (m): 28.5
Water depth (drill pipe measurement from sea level, m): 2197.5
Operation Start Depth
(m LSF)
Drilled
(m LSF)
Comments
Date
(2007)
Local
time (h)
Top Bottom
Hole C0001A pilot hole 0 1000 1000 8-1/2 inch MWD-APWD-GR
Tool preparation—tests 23 Sep 1430        
Tool rig up 23 Sep 1530        
Run into hole 24 Sep 0230       Delays resulted from GR shallow test and sinker bar release fall
ROV survey            
Tag seafloor 25 Sep 1200        
Spud-in 25 Sep 1215        
Reach total depth 27 Sep 1245        
Pull tools out of hole 27 Sep 1245        
Recover tools on rig floor 28 Sep 1200       Sign of packing off, stool stuck because of poor hole condition at 2623 and 2726 m DRF
Hole C0001B geotechnical coring hole 0 30.6 30.6 8-1/2 inch HPCS coring
Tool preparation 29 Sep 0315        
Coring 30 Sep 0000        
Hole C0001C LWD hole     0 77.5 77.5 8-1/2 inch LWD (GVR-sonic-SVWD-MWD-APWD-ADN)
Tool rig up 1 Oct 0000        
Install R/I source 1 Oct 0500        
Run into hole 1 Oct 0540        
Shallow test 1 Oct 0745       SVWD check shot test, repair geolograph failure
ROV survey 1 Oct 1840        
Tag seafloor 1 Oct 1840        
Spud-in 1 Oct 1915        
Deviation survey 2 Oct 0230       Deviation survey results: 6° at 2266 m DRF, 5.45° at 2304 m DRF
Reach total depth 2 Oct 0530       POOH at 2304 m DRF because of deviation
Pull tools out of hole 2 Oct 0530       Position nearby for new Hole C0001D
Hole C0001D LWD hole 0 976 976 8-1/2 inch LWD (GVR-sonic-SVWD-MWD-APWD-ADN)
ROV survey 2 Oct 0530        
Spud-in 2 Oct 0740        
Ream and sweep 3 Oct 1245       Sticky hole condition needed reaming and sweeping
Rig floor maintenance 4 Oct 0730    
Short trip 2600 m DRF for WL BOP maintenance
Ream and sweep 4 Oct 1615        
Reach total depth 6 Oct 1030       adnVISION lost communication for real-time monitor
Pull tools out of hole 6 Oct 1200        
Recover tools on rig floor 7 Oct 0000        
Recover data 7 Oct 0100       GVR and sonic data recovered, SVWD data sent to Fuchinobe and ADN to China

Notes: DRF = drillers depth below rig floor, LSF = LWD depth below seafloor. MWD = measurement while drilling, APWD = annular pressure while drilling, ADN = Azimuthal Density Neutron tool (adnVISION). LWD = logging while drilling, GVR = geoVISION resistivity tool. sonic = sonic while drilling (sonicVISION), SVWD = seismicVISION while drilling, GR = gamma radiation. ROV = remotely operated vehicle. R/I = radioactive, POOH = pull out of hole, WL = wireline, BOP = blowout preventer, HPCS = hydraulic piston coring system, DRT = drillers depth below rotary table.

Close   |    Next   |    Top of page