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Effects of Fractures on Seismic Wave-Fields in the Presence of Equant Porosity
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 81st EAGE Conference and Exhibition 2019, Jun 2019, Volume 2019, p.1 - 5
Abstract
Summary
We study the dispersion and attenuation effects of fractures in the presence of equant porosity using full-wavefield numerical modelling combined with rock-physics model that describes effective parameters of medium under consideration. We demonstrate how the two major effects due to the presence of fractured zone, namely, change in reflectivity and dispersion and attenuation, result in changes of the seismic signal. Depending on the fracture scale, these changes can be quite significant. We also demonstrate that thin-bedded sequence can resemble the effect of bulk uniform fractured zone.
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