Fracture Azimuth—A Shallow Experiment

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

Amoco Production Company, Tulsa, Okla. 74102

J. M. Logan

College of Geosciences, Texas A&M University, College Station, Tex. 77843

M. D. Wood

U.S. Geological Survey

J. Energy Resour. Technol 102(2), 99-105 (Jun 01, 1980) (7 pages) doi:10.1115/1.3227858 History: Received November 02, 1979; Online October 22, 2009


A small-scale, shallow experiment was conducted by Amoco Production Research, Sandia Laboratories, and the U. S. Geological Survey, in order to study the potential of several geophysical monitoring techniques for determining in-situ fracture geometry. The program included core analysis, surface strain gage over-coring, borehole measurements, tiltmeter surveys, surface electric potential measurements, and post-coring. Each of the techniques correctly measured an East-West fracture which was longer to the East. This azimuth was apparently controlled by in-situ stresses, and it was noted that these were not affected by a horizontal stress relief located due East of the site.

Copyright © 1980 by ASME
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