Interpretation of chemical analyses of waters collected from two geothermal wells at Coso, California

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Journal Article: Interpretation of chemical analyses of waters collected from two geothermal wells at Coso, California

Abstract
Wellhead and downhole water samples were collected and analyzed from a 114.3-m well at Coso Hot Springs (Coso No. 1) and a 1477-m well (CGEH No. 1) 3.2 km to the west. The same chloride concentration is present in hot waters entering both wells (about 2350 mg/kg), indicating that a hot-water-dominated geothermal system is present. The maximum measured temperatures are 142 degrees C in the Coso No. 1 well and 195 degrees C in the CGEH No. 1 well. Cation and sulfate isotope geothermometers indicate that the reservoir feeding water to the Coso Hot Spring well has a temperature of about 240 degrees -250 degrees C, and the reservoir feeding the CGEH well has a temperature of about 205 degrees C. The variation in the chemical composition of water from the two wells suggests a model in which water-rock chemical equilibrium is maintained as a convecting solution cools from about 245 degrees C to 205 degrees C by conductive heat loss.

Authors 
Fournier, R.O.; Thompson, J.M.; Austin and C.F.  








Published Journal 
Journal of Geophysical Research, 5/10/1980





DOI 
Not Provided
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Citation

Fournier, R.O.; Thompson, J.M.; Austin, C.F.  . 5/10/1980. Interpretation of chemical analyses of waters collected from two geothermal wells at Coso, California. Journal of Geophysical Research. (!) .


Related Geothermal Exploration Activities
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Areas (1)
  1. Coso Geothermal Area
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