Effective anisotropic velocity model from surface monitoring of microseismic events

0396926 - ÚSMH 2014 RIV US eng J - Článek v odborném periodiku
Zhang, Y. - Eisner, Leo - Barker, W. - Mueller, M.C. - Smith, K.L.
Effective anisotropic velocity model from surface monitoring of microseismic events.
Geophysical Prospecting. Roč. 61, č. 5 (2013), s. 919-930. ISSN 0016-8025. E-ISSN 1365-2478
Institucionální podpora: RVO:67985891
Klíčová slova: induced seismicity * anisotropy * hydraulic fracturing * inversion
Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
Impakt faktor: 1.506, rok: 2013

We developed a methodology to obtain a consistent velocity model from calibration shots or microseismicity observed on a buried array. Using a layered 1D isotropic model, we invert P-wave arrival times to obtain effective (constant) anisotropic parameters with vertical axis of symmetry (VTI). The joint inversion of selected events shows a largely reduced RMS error and Thomsen anisotropy parameters epsilon of 0.15, and delta of 0.05. These values allow us to locate microseismic events from multiple hydraulic fracture treatments separated across tens of thousands of feet with a single velocity model.
Trvalý link: http://hdl.handle.net/11104/0224633