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Title: Reservoir assessment of the Puna Geothermal Field, Island of Hawaii 
Author: GeothermEx, Inc.
Date: 1989-07
Publisher: GeothermEx, Inc.
Citation: GeothermEx, Inc. 1989. Reservoir assessment of the Puna Geothermal Field, Island of Hawaii. Richmond (CA): GeothermEx, Inc.
Abstract: The first step in assessing a geothermal resource is to develop a hydrogeologic model which defines the three-dimensional distributions of temperature and pressure and relates these distributions to the geologic structures that control the flow of thermal fluid. An assessment of the available energy beneath the lease will be based on the temperature distribution, and the drilling plan will be based on the permeability distribution inferred from the hydrogeologic model. Surface geology, interpreted from aerial photographs, and subsurface geology, inferred from geophysical data, are described in Section 2 of this report. Subsurface temperature and pressure distributions are described in Sections 3.1 through 3.3, and section 3.4 summarizes the hydrogeological model developed from interpreting the temperature and pressure distribution patterns in relation to the geology described in Section 2. Section 4 summarizes the results of well tests, including the chemistry of the thermal fluid. Section 5 describes the volumetric estimate of reserves.
Description: "for ORMAT Energy Systems, Inc., Sparks, Nevada."
Pages/Duration: 108 pages
Keywords: reservoir assessment, Puna, Hawaii

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