Stress and Fluid-flow Interaction For the Coso Geothermal Field Derived From 3D Numerical Models


The efficiency of geothermal energy production at the Coso Geothermal Field in eastern California is reliant on the knowledge of fluid flow directions associated with fracture networks. We use finite element analysis to establish the 3D state of stress within the tectonic setting of the Coso Range. The mean and differential stress distributions are used to infer fluid flow vectors and second order fracture likelihood and orientation. The results show that the Coso Range and adjacent areas are regions of increased likelihood of second order fracture generation. The mean stress distribution indicates that the geothermal field occurs in a favorable location for fluid through-flow locally derived from the north and west, but more regionally from the Sierra Nevada, and that fluid storage may occur at the southern end of the Coso Wash Fault. Predicted second order structures either support or constrain fluid flow. This indicates the importance of fracture networks for fluid migration in tectonically active regions such as the Coso Range.

Meeting Name

Geothermal Resources Council-Annual Meeting of the Geothermal Resources Council, Renewable Baseload Energy: Geothermal Heat Pumps to Engineered Reservoirs (2007: Sep. 30-Oct. 3, Reno, NV)


Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Coso; Fluid flow; Fracture networks; Fracture potential; Transtension; Geothermal fields; Geothermal heating; Geothermal prospecting; Geothermal wells; Heat pump systems; Renewable energy resources; Stress concentration; Three dimensional

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version


File Type





© 2007 Elsevier B.V., All rights reserved.

Publication Date

01 Sep 2007

This document is currently not available here.