IODP

doi:10.2204/iodp.sp.319.2009

Site summaries

Proposed Site NT2-11B

Priority:
Primary: Chikyu Expedition 319 (riser)
Position:
33°27.471´N, 136°32.150´E
Water depth
(m):
2061
Target
drilling
depth
(mbsf):
1600
Approved
maximum
penetration
(mbsf):
1600
Survey
coverage:
Extensive data from 3-D seismic data:
• In-line 2545
• Cross-line 7810
Objective:
• Drill and case long-term observatory hole
• Take cuttings and core samples to define lithology,
physical properties, and composition
• Constrain in situ stress and pore pressure
Drilling,
coring, and
downhole
measurement
program:
Chikyu Expedition 319:
• Pilot hole jet-in (60 mbsf)
• Wireline
• RCB spot coring
• LWD/MWD
• Wireline
• Cuttings analysis
Anticipated
lithology:
Hemipelagic mud, mudstone, and siltstone/sandstone