Analysis of geophysical logs from the Hawaii geothermal project well
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/sup 0/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.
- Research Organization:
- Indiana Univ., Bloomington, IN (United States)
- DOE Contract Number:
- EY-76-C-03-1093
- OSTI ID:
- 5778794
- Report Number(s):
- HIG-78-9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOTHERMAL WELLS
WELL DRILLING
WELL LOGGING
HAWAII
BASALT
CALIPER LOGGING
EXPLORATORY WELLS
FLUID FLOW
GAMMA LOGGING
INDUCTION LOGGING
LITHOLOGY
NEUTRON LOGGING
PERMEABILITY
POROSITY
RESISTIVITY LOGGING
SP LOGGING
TEMPERATURE LOGGING
DRILLING
ELECTRIC LOGGING
IGNEOUS ROCKS
NORTH AMERICA
RADIOACTIVITY LOGGING
ROCKS
USA
WELLS
WESTERN REGION
Geothermal Legacy
150303* - Geothermal Exploration & Exploration Technology- Exploratory Drilling & Well Logging