Using numerical simulation techniques and the radial model developed for the study of the natural state of the Heber field (Lippmann and Bodvarsson, 1983b), the response of this geothermal system to exploitation is analyzed. In this study the generat i o n rate in the field ls allowed to build up over a period of 10 years; after that, 30 years of constant power production is assumed. Full (100%) injection of the spent brines is considered, the fluids being injected 2250 m ("near injection") or 4250 m ( " f a r injection " ) from the center of the system. The study shows that a maximum of 6000 kg/s (equivalent to approximately 300 We) of fluids may be produced for the near inject i o n case, but only 3000 kg/s (equivalent to approximately 150 MW,) for the f a r in j e c t i o n case. indicate that the possible extraction rates (generat in g capacity) generally are limited by the pressure drop in the reservoir. The average temperature of the produced fluid s will decline 10-18?C over the 40-year period.

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Copyright 1983, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.