Research Article
Apr 1978
Goethermal Reservoir Engineering: Performance Matching and Predicting
Abstract
The initial conditions (physical and chemical state) of a geothermal reservoir and its fluids are important information needed in geothermal reservoir engineering for determining the future productivity of the reservoir. An optimization scheme was employed to minimize the least-squares function and determine the optimum initial conditions. Using the mass, energy, and volumetric balance equations, the initial parameters were obtained by matching the production data plot of average reservoir pressure versus cumulative mass produced for a compressed liquid, saturated liquid-steam, and superheated steam reservoir. Once a good curve match was attained, the performance projection of the geothermal reservoir was made at different production rates. A successful curve match was found to be highly dependent on the constraints chosen in the optimization scheme. Mass influx, as well as porosity also proved to be an influencing factor in the determination of the initial conditions. The computer prediction model is presently being used to assess reservoir conditions for the Hawaii Geothermal Project Well A, believed to be the hottest producing geothermal well in the world.
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Information
Published In
Journal of the Power Division
Volume 104 • Issue 2 • April 1978
Pages: 169 - 181
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Apr 1978
Published online: Feb 11, 2021
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Authors
Affiliations
Arthur S. Seki
Jr. Researcher, Hawaii Geothermal Project, Univ. of Hawaii, Honolulu, Hawaii
Bill H. Chen
Assoc. Prof.; Hilo Coll., Univ. of Hawaii, Hilo, Hawaii
Patrick K. Takahashi, M.ASCE
Assoc. Prof., Dept. of Civ. Engrg., Univ. of Hawaii, Honolulu, Hawaii
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.