Least squares migration of stacked supergathers

Wei Dai, Ge Zhan, Gerard Schuster

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

Abstract

We show that phase-encoded shot gathers can be stacked together to form supergathers and efficiently migrated using an iterative least squares migration (LSM) method. The major problem of cross-talk can be largely eliminated by iterative stacking of the phase-encoded migrations and a multisource preconditioning factor, where random static shifts are used for the phase encoding function. Empirical results with synthetic seismic data suggests that increasing the number of stacked shot gathers requires an attendant increase in the number of LSM iterations. A key merit of phase-encoded LSM of supergathers is that, under ideal conditions, computational costs, 10, and storage requirements can be reduced by several orders of magnitude compared to conventional LSM.

Original languageEnglish (US)
Title of host publication72nd European Association of Geoscientists and Engineers Conference and Exhibition Incorporating SPE EUROPEC 2010, Workshops
PublisherEuropean Association of Geoscientists and Engineers, EAGE
Pages328-332
Number of pages5
ISBN (Print)9781618392244
StatePublished - Jan 1 2010
Event72nd European Association of Geoscientists and Engineers Conference and Exhibition Incorporating SPE EUROPEC 2010 - Barcelona, Spain
Duration: Jun 14 2010Jun 17 2010

Publication series

Name72nd European Association of Geoscientists and Engineers Conference and Exhibition Incorporating SPE EUROPEC 2010, Workshops

Other

Other72nd European Association of Geoscientists and Engineers Conference and Exhibition Incorporating SPE EUROPEC 2010
CountrySpain
CityBarcelona
Period06/14/1006/17/10

ASJC Scopus subject areas

  • Geochemistry and Petrology

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