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RESEARCH PAPERS

A Three-Dimensional Anisotropic Yield Condition for Green River Shale

[+] Author and Article Information
M. B. Smith

Amoco Production Research, Tulsa, Okla. 74102

J. B. Cheatham

Mechanical Engineering Department, Rice University, Houston, Tex. 77001

J. Energy Resour. Technol 102(4), 184-189 (Dec 01, 1980) (6 pages) doi:10.1115/1.3227871 History: Received September 03, 1980; Online October 22, 2009

Abstract

A three-dimensional, transversely isotropic yield condition is combined with a plane of weakness to describe the initial yield limit for Green River Shale. This theory is compared to experimental results for two different qualities of oil shale, including true three-dimensional tri-axial stress tests. It is interesting to note that a decrease in the anisotropy of the material with increasing mean stress is predicted by the yield condition and is borne out by the experimental results. For large confining stresses, the material ceases to fail preferentially along the plane of weakness.

Copyright © 1980 by ASME
Topics: Rivers , Stress , Anisotropy
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