Position: 44.57031°N, 125.074193°W
Water Depth: 1200 m
Sediment Thickness: ~7 km
Target Drilling Depth: 650 mbsf
Approved Maximum Penetration: 650 mbsf
Seismic Coverage: TTN112 3-D high-resolution seismic survey
Objectives: To establish the source and distribution of gas hydrate in a slope basin characterized by rapid deposition of terrestrial sediments (same as proposed Site HR2alt; this site would be drilled if problems were encountered at proposed Site HR2alt).
Drilling Program: APC to refusal, XCB to refusal, RCB as necessary to reach target depth. At least two holes. Use of PCS and/or HYACE.
Logging and Downhole Program: LWD, triple combo, APC-temperature, DVTP, APC methane tools; VSP, walkaway VSP.
Nature of Rock Anticipated: Interlayered silts and clays, some authigenic carbonates possible.
Next Section | Table of Contents