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Diffraction Separation Based on the Projected First Fresnel Zone
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Medium to small-scale structural details and heterogeneities of a medium, e.g., faults, pinch-outs, thin lenses, fracturing etc. are of crucial importance for prospecting and development of fractured reservoirs. Such details and heterogeneities are a source of scattered waves (e.g., diffractions), carrying information about scattering objects. In this work, we develop a new diffraction weighting function based on the projected (first) Fresnel zone to enhance diffraction separation and imaging. The difference in the width of the projected (first) Fresnel zone for reflections and diffractions appeared to be very consistent and thus it can be a reliable diffraction indicator. We use the common-reflection-surface (commonly known as CRS) technique to extract the kinematic wavefield attributes and the width of projected Fresnel zone. Applications to a simple gradient as well as complex synthetic data set reveal high potential of the new diffraction weight.