Diffraction imaging and velocity analysis using oriented velocity continuation
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AbstractWe perform seismic diffraction imaging and velocity analysis by separating diffractions from specular reflections and decomposing them into slope components. We image slope components using extrapolation in migration velocity in time-space-slope coordinates. The extrapolation is described by a convection-type partial differential equation and implemented efficiently in the Fourier domain. Synthetic and field data experiments show that the proposed algorithm is able to detect accurate time-migration velocities by automatically measuring the flatness of events in dip-angle gathers.
CitationDecker L, Fomel S (2014) Diffraction imaging and velocity analysis using oriented velocity continuation. SEG Technical Program Expanded Abstracts 2014. Available: http://dx.doi.org/10.1190/segam2014-1471.1.
SponsorsWe thank KAUST and Shell for partial financial support of thiswork
PublisherSociety of Exploration Geophysicists