An Enhanced Geothermal System at Coso, California-Recent Accomplishments
- Key words
- Engineered Geothermal System, geomechanics, geophysics, geochemistry
- Location
- Coso, California
- Conference
- World Geothermal Congress
- Year
- 2005
- Session
- 16. Advanced Technologies (HDR, Magma, Geopressure)
- Language
- English
- Paper number
- 1603
Full text
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Abstract
An Enhanced Geothermal System (EGS) field experiment will be conducted to hydraulically stimulate injection well 34-9RD2, located on the east flank of the Coso geothermal reservoir, with the objective of increasing the injection rate of this well to 750 gpm at a wellhead pressure of 100 psi or less. The stimulation of this well is expected to create hydraulic communication with the recently drilled production well 38C-9, which is directly south of 34-9RD2. We summarize the results of fracture and stress analyses based upon borehole image logs of 38C-9; petrographic and petrologic analyses of cuttings from both the injection well 34-9RD2 and the production well 38C-9; and plans for the redrilling and stimulation of 34-9RD2.
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