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An experimental study of adsorption in vapor-dominated geothermal systems

Description: We report results of steam adsorption experiments conducted for rock samples from vapor-dominated geothermal reservoirs. We examine the effect of the temperature on the adsorption/desorption isotherms. We find that the temperature effect is only important on the desorption such that the hysteresis becomes more pronounced as the temperature increases. The scanning behavior within the steam sorption hysteresis loop is also studied to investigate the behavior during repressurization. Collection of sets of data on the sorption behavior of The Geysers geothermal field in California is presented.
Date: January 26, 1995
Creator: Satik, Cengiz & Horne, Roland N.
Partner: UNT Libraries Government Documents Department

Elimination of Heat-Shielding for Geothermal Tools Operating Up To 300 Degress Celsius

Description: This report focuses Sandia National Laboratories' effort to create high-temperature logging tools for geothermal applications not requiring heat-shielding. Tool electronics can operate up to 300 C with a few limiting components operating to 250 C. Second generation electronics are needed to increase measurement accuracy and extend the operating range to 300 and then 350 C are identified. Custom development of high-temperature batteries and assembling techniques are touched on. Outcomes of this work are discussed and new directions for developing high-temperature industry are suggested.
Date: October 7, 1999
Partner: UNT Libraries Government Documents Department