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Temperature and thermal conductivity data were acquired from 3 idle production wells in the Northwest Geysers. Heat-flow profiles derived from data recorded in the caprock which overlies the steam reservoir reveal a decrease of heat flow with depth in 2 of the 3 wells. These observations contradict the generally accepted theory that conductive heat flow is constant with depth within The Geysers caprock. There are several possible explanations for this, but the available data suggest that these profiles reflect a local recession or cooling of the reservoir top within the past 5000 to 10000 years.
Additional Publication Details
Heat-flow studies in the northwest geysers geothermal field, California
Publ by Geothermal Resources Council
Davis, CA, United States
Number of Pages:
Proceedings of the 1993 Annual Meeting on Utilities and Geothermal: An Emerging Partnership