Table T13. Detail of logging operations, Hole 1230A.
Date
(Mar 2002)
UTC
(GMT - 6 hr)
Tool depth
(mbsf)
Remarks
15 2300
End of coring
15 2300-0300
Wiper trip; hole displaced with 150 bbl sepiolite; bottom of pipe set at 80 mbsf
16 0300-0500
Logging rig-up
16 0530
Start going downward with triple combination tool string: TAP/DIT-E/HLDT/APS/HNGS/SGT
16 0815 0 Stop 5 min at mudline for temperature calibration
16 0825 80 Bottom of tool string (TAP) in open hole
16 0845 282 Tool at TD; start logging upward at 900 ft/hr
16 0927 80 Tool back inside pipe; speed up to 1500 ft/hr to log mudline
16 0937 0 Mudline indicated by gamma ray at 164 m below rig floor
16 0945 -15 End of pass 1; standing 5 min and start going back downward
16 0950 80 TAP in open hole
16 1000 282 Tool at TD; start logging upward pass 2 at 900 ft/hr
16 1040 103 End of pass 2
16 1045 80 Tool back inside pipe
16 1305
Tool string on deck
16 1400
Finish triple combo rig-down; start FMS/sonic rig-up
16 1515
Start going downward with FMS/sonic tool string: MESTB/NGT/MCD/DSS
16 1710 0 Tool at mudline
16 1715 80 Bottom of tool string in open hole
16 1730 282 Tool at TD; start of pass 1
16 1815 75 Tool back in pipe; end of pass 1
16 1820 80 Bottom of tool in open hole
16 1830 282 Tool at TD; start of pass 2
16 1845
Pipe raised 10 m
16 1915 70 Tool back in pipe; end of pass 2
16 2110
Tool string on deck
16 2200
Rig-down completed

Notes: UTC = Universal Time Coordinated. TD = total depth. TAP = LDEO Temperature/Acceleration/Pressure tool, DIT-E = Dual Induction Tool, HLDT = Hostile Environment Litho-Density Tool, APS = Accelerator Porosity Sonde, HNGS = Hostile Environment Gamma Ray Sonde, SGT = Scintillation Gamma Ray Tool. MESTB = microelectrical scanner tool, NGT = Natural Gamma Ray Tool, MCD = caliper tool, DSS = deep sound source.