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The Effect of Fracture Clustering on Confined Fractured Zones: Numerical Modeling and AnalysesNormal access

Authors: A. Alali, K. Marfurt and N. Nakata
Event name: Petroleum Geostatistics 2019
Session: Poster Session 1
Publication date: 02 September 2019
DOI: 10.3997/2214-4609.201902218
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 630.23Kb )
Price: € 20

Summary:
Seismic reflection amplitude variation with offset and azimuth (AVOaz) provides a traditional technique to detect fracture in the subsurface and deduce their properties. AVOaz relies on the Effective Medium Theory (EMT) which treats the fractured formation as anisotropic medium. The underlying assumption of EMT is that the fractures are uniformly disturbed and sufficiently close such that only specular reflections from the boundaries of the fractures are observed. In contrast, for randomly spaced fractures clustering takes place and individual scattering occurs, and the assumptions of effective medium theory are violated.


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