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Item Description Hawaii Natural Energy Institute en_US Olson, H.J. en_US GeothermEx, Inc. en_US 2011-07-26T00:49:58Z 2011-07-26T00:49:58Z 1993 en_US
dc.identifier.citation Hawaii Natural Energy Institute, Olson HJ, GeothermEx, Inc. 1993. Geothermal Reservoir Assessment Based on Slim Hole Drilling, Volume 2: Application in Hawaii. Palo Alto (CA): Electric Power Research Institute, Inc. EPRI TR-103399-V2, Project 1994-04. en_US
dc.description.abstract The Hawaii Scientific Observation Hole (SOH) program was planned, funded, and initiated in 1988 by the Hawaii Natural Energy Institute, an institute within the School of Ocean and Earth Science and Technology, at the University of Hawaii at Manoa. Initial funding for the SOH program was $3.25 million supplied by the State of Hawaii to drill six, 4,000 foot scientific observation holes on Maui and the Big Island of Hawaii to confirm and stimulate geothermal resource development in Hawaii. After a lengthy permitting process, three SOHs, totaling 18,890 feet of mostly core drilling were finally drilled along the Kilauea East Rift Zone (KERZ) in the Puna district on the Big Island. The SOH program was highly successful in meeting the highly restrictive permitting conditions imposed on the program, and in developing slim hole drilling techniques, establishing subsurface geological conditions, and initiating an assessment and characterization of the geothermal resources potential of Hawaii - even though permitting specifically prohibited pumping or flowing the holes to obtain data of subsurface fluid conditions. The first hole, SOH-4, reached a depth of 2,000 meters, recorded a bottom hole temperature of 306.1°C, and established subsurface thermal continuity along the KERZ between the HGP-A and the True/Mid-Pacific Geothermal Venture wells. Although evidence of fossil reservoir conditions were encountered, no zones with obvious reservoir potential were found. The second hole SOH-1, was drilled to a depth of 1,684 meters, recorded a bottom hole temperature of 206.1°C, effectively doubled the size of the Hawaii Geothermal Project - Abbott/Puna Geothermal Venture (HGP-A/PGV) proven/probable reservoir, and defined the northern limit of the HGP-A/PGV reservoir. The final hole, SOH-2, was drilled to a depth of 2,073 meters, recorded a bottom hole temperature of 350.5°C, and has sufficient indicated permeability to be designated as a potential “discovery”. en_US
dc.description.sponsorship Prepared for State of Hawaii, Department of Business, Economic Development & Tourism and Electric Power Research Institute en_US
dc.format.extent various pagings en_US
dc.language.iso en-US en_US
dc.publisher Palo Alto, CA: Electric Power Research Institute, Inc. en_US
dc.relation.ispartofseries EPRI TR-103399-V2, Project 1994-04 en_US
dc.subject geothermal en_US
dc.subject Scientific Observation Hole Program en_US
dc.title Geothermal Reservoir Assessment Based on Slim Hole Drilling, Volume 2: Application in Hawaii en_US
dc.type Report en_US
dc.type.dcmi Text en_US

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