Diffraction imaging and time-migration velocity analysis using oriented velocity continuation
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ArticleDate
2017-03-01Permanent link to this record
http://hdl.handle.net/10754/679210
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We 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.Citation
Decker, 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/geo2016-0141.1Sponsors
We thank KAUST, Shell, and the sponsors of TCCS for their financial support of this work and E. Landa for inspiring discussions.Publisher
SOC EXPLORATION GEOPHYSICISTSJournal
GEOPHYSICSAdditional Links
https://library.seg.org/doi/10.1190/geo2016-0141.1ae974a485f413a2113503eed53cd6c53
10.1190/GEO2016-0141.1