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In situ stress and fracture permeability along the Stillwater fault zone, Dixie Valley Nevada

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts

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, , , , , and
DOI: 10.1016/S0148-9062(97)00169-1

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Abstract

Borehole televiewer and hydrologic logging and hydraulic fracturing stress measurements were carried out in a 2.7-km-deep geothermal production well (73B-7) drilled into the Stillwater fault zone. Precision temperature and spinner flowmeter logs were also acquired in well 73B-7, with and without simultaneously injecting water into the well. Localized perturbations to well-bore temperature and flow were used to identify hydraulically conductive fractures. Comparison of these data with fracture orientations from the televiewer log indicates that permeable fractures within and adjacent to the Stillwater fault zone are critically stressed, potentially active shear planes in the current west-northwest extensional stress regime at Dixie Valley.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
In situ stress and fracture permeability along the Stillwater fault zone, Dixie Valley Nevada
Series title:
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts
DOI:
10.1016/S0148-9062(97)00169-1
Volume
34
Issue:
3-4
Year Published:
1997
Language:
English
Publisher:
Elsevier Sci Ltd
Publisher location:
Exeter, United Kingdom
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts
First page:
414
Conference Title:
Proceedings of the 1997 36th US Rock Mechanics ISRM International Symposium
Conference Location:
New York, NY, USA
Conference Date:
29 June 1997 through 2 July 1997