Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A.

Nicholas C. Davatzes; Stephen H. Hickman

doi:10.1306/13181288m923134

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Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A.

Nicholas C. Davatzes·Stephen H. Hickman

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Abstract

Acoustic and electrical image logs in fractured granitic rocks penetrated by U.S. Navy well 58A-10, Coso Wash, in the eastern margin of the Coso geothermal field, California, were compared to evaluate their relative ability to characterize fractures and fault rock textures and to measure stress orientations from borehole failure. Electrical image logs are sensitive to variations in mineralogy or porosity, which affect conductivity. Thus, they capture both open and healed natural fractures as well as rock foliation.

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Source-reported bounding extent: 35.88682489453265° to 36.121236902880185° latitude; -118.01925659179688° to -117.75215148925781° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Nicholas C. Davatzes, Stephen H. Hickman. 2010. Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A.. https://doi.org/10.1306/13181288m923134

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