Conceptual Model At Coso Geothermal Area (2005-2007)

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Exploration Activity: Conceptual Model At Coso Geothermal Area (2005-2007)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Conceptual Model
Activity Date 2005 - 2007

Usefulness useful
DOE-funding Unknown

Exploration Basis
Determine most productive areas of geothermal field using stress and faulting analysis to develop a geomechanical model
New geologic mapping and measurements of stress orientations and magnitudes from wells 34-9RD2 and 58A-10 were integrated with existing data sets to refine a geomechanical model for the Coso geothermal field. Vertically averaged stress orientations across the field are fairly uniform and are consistent with focal mechanism inversions of earthquake clusters for stress and incremental strain. Active faults trending NNW-SSE to NNE-SSW are well oriented for normal slip in the current stress field, where the mean Shmin orientation is 108V0± 240 in a transitional strike-slip to normal faulting stress regime. These results together with stress magnitudes measured in the East Flank of the field suggest that the most productive portions are in stress environments conducive to normal faulting.

Additional References