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Fluid transport properties of rock fractures at high pressure and temperature. Progress report, July 1, 1979-June 30, 1980 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 21 : digital, PDF file
Additional Creators
Columbia University, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Flow rates and thus permeability were measured for a variety of effective pressures on artificially prepared joints in Cheshire quartzite. Permeabilities calculated from constant head tests compare with permeabilities calculated from pulse decay tests. Measurement of the change in aperture with effective pressure shows that at effective pressures of less than 20 MPa changes in confining pressure have a larger influence on the aperture than changes in pore pressure. Joint permeability changes with aperture; thus changes in confining pressure are more influential on permeability than changes in pore pressure. Although a cubic law model for flow along a joint gives a rough estimate of joint permeability, measurements of the changes in flow rate with aperture suggest that the cubic law is inadequate for smooth joints at high pressure. This is so because the effective cross section available for flow changes with pressure in a nonlinear manner.
Report Numbers
E 1.99:doe/er/04054-4
doe/er/04054-4
Subject(s)
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Note
Published through SciTech Connect.
04/01/1980.
"doe/er/04054-4"
Engelder, T.; Scholz, C.
Funding Information
AS02-76-ER04504
View MARC record | catkey: 14381193