Electric Micro Imager Log At Coso Geothermal Area (2003)

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Exploration Activity: Electric Micro Imager Log At Coso Geothermal Area (2003)

Exploration Activity Details
Location Coso Geothermal Area
Exploration Technique Single-Well and Cross-Well Resistivity
Activity Date 2003

Usefulness not indicated
DOE-funding Unknown

Exploration Basis
Fracture/stress analysis
A preliminary fracture/stress analysis was conducted for the recently drilled well 38C-9 as part of a continuing effort to characterize the stress state within the east flank of the Coso geothermal field. Electric Micro Imager (EMI) data were analyzed over the logged interval of 5,881-9,408 ft. Naturally occurring fractures were analyzed in order to determine both fracture dip and azimuth. Drilling induced tensile fractures were used to determine that the orientation of the maximum horizontal stress is 140 + or -160. However, this is approximate as the data have to be corrected for well-bore deviation.


Additional References