Stability of a Penny-Shaped Geothermal Reservoir in the Earth’s Crust

[+] Author and Article Information
H. Abé, H. Sekine, S. Kitada

Department of Mechanical Engineering, Tohoku University, Sendai, Japan

J. Energy Resour. Technol 104(2), 93-95 (Jun 01, 1982) (3 pages) doi:10.1115/1.3230399 History: Received July 14, 1981; Revised January 04, 1982; Online October 22, 2009


The theoretical analysis of a penny-shaped geothermal reservoir in the earth’s crust subject to linear tectonic stress gradients has been made on the basis of the three-dimensional theory of elasticity. The condition for stability of a reservoir requires K1 < Kc , where K1 and Kc are, respectively, the stress intensity factor for the opening mode and the fracture toughness of the surrounding rock. From this condition the upper critical pressure being necessary for the reservoir stability is obtained and is shown graphically.

Copyright © 1982 by ASME
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