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Book Chapter

Geomechanics of Microseismic Deformation

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Published:
January 01, 2014

Abstract

Microseismic sources and emission of the detected seismic waves are an expression of some aspects of the complete geomechanical deformation of the hydraulic-fracture network. Specific signal attributes can be analyzed to estimate source characteristics of the episode of coseismic fracture deformation that corresponds to generation of the microseismic source. Amplitude characteristics of the seismic signal are related to the source strength or magnitude of the microseismic event. Frequency content can be related to the slip duration and hence the source radius or slip area. Other aspects such as stress release and energy flux also can be estimated. Finally, the directivity or radiation pattern of the relative amplitudes and first motion can be used to investigate the microseismic source mechanism, including mode of fracturing (i.e., tensile opening or shear deformation), fracture-plane orientation, and principle stresses leading to the failure.

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Society of Exploration Geophysicists Distinguished Instructor Series

Microseismic Imaging of Hydraulic Fracturing: Improved Engineering of Unconventional Shale Reservoirs

Shawn Maxwell
Shawn Maxwell
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Society of Exploration Geophysicists
Volume
17
ISBN electronic:
9781560803164
Publication date:
January 01, 2014

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