Diffraction imaging and time-migration velocity analysis using oriented velocity continuation
Permanent link to this recordhttp://hdl.handle.net/10754/679210
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AbstractWe perform seismic diffraction imaging and time-migration velocity analysis by separating diffractions from specular reflections and decomposing them into slope components. We image the slope components using migration velocity extrapolation in time-space-slope coordinates. The extrapolation is described by a convection-type partial differential equation and implemented in a highly parallel manner in the Fourier domain. Synthetic and field data experiments show that the proposed algorithms are able to detect accurate time-migration velocities by measuring the flatness of diffraction events in slope gathers for single- and multiple-offset data.
CitationDecker, L., Merzlikin, D., & Fomel, S. (2017). Diffraction imaging and time-migration velocity analysis using oriented velocity continuation. GEOPHYSICS, 82(2), U25–U35. doi:10.1190/geo2016-0141.1
SponsorsWe thank KAUST, Shell, and the sponsors of TCCS for their financial support of this work and E. Landa for inspiring discussions.
PublisherSOC EXPLORATION GEOPHYSICISTS