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Keywords: azimuth
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Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-017
... azimuths throughout the drilled depths, it is inferred that the breakouts are stress-dependent such that the stress-induced premature rock damage zones are spalled out progressively with time. Thus, breakout azimuths can be used to estimate stress orientation, but breakout geometry (width) should...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-043
... ABSTRACT: We compare two stress models, "subsidiary" and "borehole," as mechanisms responsible for, respectively, the sonic fast-shear azimuth (FSA) and breakout directions for arbitrary well orientations. We show that the sonic FSA coincides with the "maximum subsidiary principal stress...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-063
... at the bottom. formula MPa plane stress value Upstream Oil & Gas prefecture inclination azimuth rock burst Reservoir Characterization measuring point crustal stress measurement stress measurement Crustal stress hydropower traffic tunnel principle stress value reservoir geomechanics...

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