Actions for Anomalous earth stress measurements during a six-year sequence of pumping tests at Fenton Hill, New Mexico [electronic resource].

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Anomalous earth stress measurements during a six-year sequence of pumping tests at Fenton Hill, New Mexico [electronic resource].

Published
Los Alamos, N.M. : Los Alamos National Laboratory, 1988.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 25 : digital, PDF file
Additional Creators
Los Alamos National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Since 1982, the Los Alamos National Laboratory has been conducting fracturing and flow-through tests on a deep region of jointed Precambrian rock underlying the western flank of the Valles Caldera, in the Jemez Mountains of north-central New Mexico. These experiments have been conducted as part of the Laboratory's Hot Dry Rock (HDR) Geothermal Energy Project, at our Fenton Hill Test Facility, 30 km west of Los Alamos. During this time, the overall project goal has been to experimentally study (and model) the development and performance of a commercial-sized HDR reservoir -- created hydraulically by multiply-fracturing a very large region of hot crystalline rock. One of the primary objectives of this extensive series of fracturing tests has been to study how hard ''competent'' rock dilates and shears during the continuing injection of water under pressure. In association with these tests, a number of seemingly anomalous results have been observed which, if taken separately, would have been fairly easy to ignore or explain anyway. However, in concert, these disparate results have started to form a picture of rock deformation which is quite different from our previously accepted concepts of hydraulic fracturing, and the interpretation of the resulting stress measurements. Key to this better understanding is the realization that almost all bodies of deep crystalline rock are already flawed by one or more sets of joints or planes of weakness, and that it is the interaction between these joints and the existing stress field determines the nature of the pressure-induced deformation. 16 refs., 8 figs., 2 tabs.
Report Numbers
E 1.99:la-ur-88-3985
E 1.99: conf-880697-2
conf-880697-2
la-ur-88-3985
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1988.
"la-ur-88-3985"
" conf-880697-2"
"DE89003601"
2. international workshop on hydraulic fracturing, Minneapolis, MN, USA, 15 Jun 1988.
Brown, D.W.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14385426