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Title: Geothermal reservoir assessment based on slim hole drilling. Volume 1, Analytical Method: Final report

Abstract

The Hawaii Scientific Observation Hole (SOH) program was 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 206.1more » 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.''« less

Authors:
 [1]
  1. Hawaii Natural Energy Inst., Honolulu, HI (US)
Publication Date:
Research Org.:
Electric Power Research Inst., Palo Alto, CA (US); Hawaii Natural Energy Inst., Honolulu, HI (US); GeothermEx, Inc., Richmond, CA (US)
Sponsoring Org.:
Electric Power Research Inst., Palo Alto, CA (US)
OSTI Identifier:
10116834
Report Number(s):
EPRI-TR-103399-V1
ON: UN94005626; TRN: US200515%%637
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Dec 1993; PBD: 1 Dec 1993
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; GEOTHERMAL RESOURCES; HAWAII; PERMEABILITY; PUMPING; RESOURCE DEVELOPMENT; RIFT ZONES; KILAUEA VOLCANO; GEOTHERMAL EXPLORATION; GEOTHERMAL POWER PLANTS; RESOURCE ASSESSMENT; GEOTHERMAL FIELDS; DRILLING; EXPLORATORY WELLS; SAMPLING; BOREHOLES; 150303; 150100; EXPLORATORY DRILLING AND WELL LOGGING; RESOURCES AND AVAILABILITY

Citation Formats

Olson, H J. Geothermal reservoir assessment based on slim hole drilling. Volume 1, Analytical Method: Final report. United States: N. p., 1993. Web.
Olson, H J. Geothermal reservoir assessment based on slim hole drilling. Volume 1, Analytical Method: Final report. United States.
Olson, H J. 1993. "Geothermal reservoir assessment based on slim hole drilling. Volume 1, Analytical Method: Final report". United States.
@article{osti_10116834,
title = {Geothermal reservoir assessment based on slim hole drilling. Volume 1, Analytical Method: Final report},
author = {Olson, H J},
abstractNote = {The Hawaii Scientific Observation Hole (SOH) program was 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.''},
doi = {},
url = {https://www.osti.gov/biblio/10116834}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 1993},
month = {Wed Dec 01 00:00:00 EST 1993}
}

Technical Report:
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