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Title: Analysis of Geophysical Logs from the Hawaii Geothermal Project Well 
Author: Rudman, Albert J.
Date: 1978
Publisher: Hawaii Institute of Geophysics, University of Hawaii at Manoa
Citation: Rudman AJ. 1978. Analysis of geophysical logs from the Hawaii Geothermal Project well. Honolulu (HI): Hawaii Institute of Geophysics, University of Hawaii at Manoa. Geothermal Resources Exploration in Hawaii, 6.
Abstract: A 6445-foot test well was completed on April 27, 1976 in the Puna Area of Hawaii as part of an extensive project to investigate a geothermal reservoir for energy production. Because bottom hole temperatures exceeded 300°C, it was possible to run geophysical logs in the upper 3500 feet only.

Study of conventional and induction resistivity, self potential, neutron, gamma ray, caliper, temperature, temperature differential and drilling rate logs show that porosity, permeability and fluid flow are qualitatively identified on the logs. Lithologic logs of sample cuttings taken at five- to ten-foot intervals (together with cores taken at approximately 700-foot intervals) substantiate preliminary findings of the porous and permeable zones. Although the logs investigated are above many of the zones of production, new information was obtained about the in-situ nature of permeability in Hawaiian basalts.
Series/Report No.: Geothermal Resources Exploration in Hawaii: Number 6
Sponsorship: Prepared for NATIONAL SCIENCE FOUNDATION, Grant GI-38319 and ENERGY RESEARCH AND DEVELOPMENT AGENCY, Grant EY-76-C-03-l093.
Pages/Duration: 25 p.
LC Subject Headings: Hawaii Geothermal Project
Geophysical well logging
Geothermal resources--Hawaii
Geophysical well logging--Hawaii

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