Post-stack velocity analysis by separation and imaging of seismic diffractions

Sergey Fomel, Evgeny Landa, M. Turhan Taner

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Small geological features manifest themselves in seismic data in the form of diffracted waves, which are fundamentally different from seismic reflections. Using two field data examples, we demonstrate the possibility of separating seismic diffractions in the data and imaging them with optimally chosen migration velocities. Our criterion for separating reflection and diffraction events is the smoothness and continuity of local event slopes. Our criterion for optimal focusing is the local varimax measure. The objective is fast velocity analysis in the post-stack domain and high-resolution imaging of small-scale heterogeneities. Our examples demonstrate the effectiveness of the proposed method for high-resolution imaging of such geological features as faults and salt boundaries.

Original languageEnglish
Title of host publicationSociety of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006
PublisherSociety of Exploration Geophysicists
Pages2559-2563
Number of pages5
ISBN (Print)9781604236972
StatePublished - 2018
Externally publishedYes
EventSociety of Exploration Geophysicists International Exposition and 76tth Annual Meeting 2006, SEG 2006 - New Orleans, United States
Duration: 1 Oct 20066 Oct 2006

Publication series

NameSociety of Exploration Geophysicists - SEG International Exposition and 76tth Annual Meeting 2006, SEG 2006

Conference

ConferenceSociety of Exploration Geophysicists International Exposition and 76tth Annual Meeting 2006, SEG 2006
Country/TerritoryUnited States
CityNew Orleans
Period1/10/066/10/06

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