Proc. IODP, 336, Design and deployment of borehole observatories and experiments during IODP Expedition 336, Mid-Atlantic Ridge flank at North Pond

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Chapter contents Abstract Background, motivation, and overview Subseafloor observatories North Pond setting, history of study, and initial characterization North Pond upper oceanic crust, borehole conditions, and CORK overview Expedition 336 CORKs: mechanical and hydraulic features overview CORK sealing and isolation elements CORK sampling components CORK component surface treatments Expedition 336 CORKs: detailed configuration CORK wellhead CORK stinger CORK stinger sampling and experimental umbilicals and screens Expedition 336 CORKs: sensors and sampling Pressure sensors Temperature sensors Oxygen Fluid sampling for geochemical analyses Microbial growth chambers Expedition 336 CORKs: detailed summaries for each CORK installed Hole 395A Hole U1382A Hole U1383B Hole U1383C Future plans ROV dives CORK-lite Acknowledgments References Figures F1. Location maps. F2. Borehole configuration at North Pond. F3. CORK wellheads at start of expedition. F4. Coatings and sealants. F5. Umbilicals, miniscreens, and centralizers. F6. CORK umbilical–flatpack. F7. CORK packer configurations. F8. L-CORK wellhead. F9. Fiberglass casing and packers. F10. Instrument bay. F11. VIT camera system. F12. CORK wellhead bays, Hole U1382A. F13. CORK wellhead bays, Hole U1383C. F14. CORK stinger typical components. F15. CORK miniscreens. F16. OsmoSampler packages. F17. Fast-flow wellhead OsmoSamplers. F18. FLOCS microbial colonization experiment. F19. Configuration of new Hole 395A CORK. F20. CORK wellhead damage, Hole 395A. F21. VIT footage of ROV platform, Hole 395A. F22. Configuration of Hole U1382A CORK. F23. Reentry cone and casing, Hole U1383B. F24. Configuration of Hole U1383C CORK. F25. CORK body to be installed, Hole U1383B. Tables T1. Coatings used on different materials. T2. Lubricants. T3. Umbilical materials. T4. CORK stinger tubular strength comparison. T5. CORK stinger tubular stretch. PDF file			Previous \| Next doi:10.2204/iodp.proc.336.109.2012 Acknowledgments The authors would like to thank our shore-based collaborators on the North Pond project who helped imagine and plan for the CORK observatory experiments (James Cowen, Andrew Fisher, Peter Girguis, Brian Glazer, and Julie Huber), the scientists who helped to assemble the CORKs during Expedition 336 (Steffen Jørgensen, Heath Mills, Joe Russell), and the Integrated Ocean Drilling Program (IODP)-Texas A&M University/Siem Offshore staff who helped to assemble the CORKs (Joe “Bubba” Attryde, Phil Christie, Charlie Watts, Wayne Malone, Gemma Barrett, Tim Bronk, Lisa Crowder, Kristin Hillis, Steve Midgley, Mike Storms, Garrick Van Rensburg, Bartolome Estaoya, and Dionisio Germo). We also acknowledge the contribution of the Geological Survey of Canada for the design and construction of the pressure monitoring systems. Support for this work has been provided by the National Science Foundation (OCE-0946795 and OCE-1060855 to K. Becker), the Consortium for Ocean Leadership, the Gordon and Betty Moore Foundation, the Max Planck Society and the Danish National Research Foundation, and IODP. This is the Center for Dark Energy Biosphere Investigations (C-DEBI) contribution Number 131. Top of page \| Previous \| Next

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