Diffraction imaging and velocity analysis using oriented velocity continuation

Type
Conference Paper

Authors
Decker, Luke
Fomel, Sergey

Online Publication Date
2014-08-05

Print Publication Date
2014-08-05

Date
2014-08-05

Abstract
We 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.

Citation
Decker 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.

Acknowledgements
We thank KAUST and Shell for partial financial support of this work.

Publisher
Society of Exploration Geophysicists

Journal
SEG Technical Program Expanded Abstracts 2014

Conference/Event Name
Society of Exploration Geophysicists International Exposition and 84th Annual Meeting SEG 2014

DOI
10.1190/SEG-2014-1471.pdf10.1190/segam2014-1471.1

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