Wavefield extrapolation in the pseudo-depth domain

X. Ma*, T. Alkhalifah

*Corresponding author for this work

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

2 Scopus citations

Abstract

We introduce the pseudo-depth as an extension to vertical time representation of acoustic wavefield. By formulating the mapping relations between conventional depth and pseudo-depth, we derive an acoustic wave equation for isotropic media in the pseudo-depth domain. Because of a uniform vertical wavelength in the pseudo-depth domain, wavefield extrapolation requires less number of vertical samples to avoid aliasing. Reduction of samples implies a reduction of run time for finite-difference time extrapolation. To highlight its application potentials, we performed an exploding reflector modeling and zero-offset migration using pseudo-depth wavefield extrapolation. The results agree well with conventional vertical-depth modeling and migration. The pseudo-depth wavefield extrapolation also showed ils potential in eliminating multiple artifacts resulting from using a discontinuous velocity model in migration.

Original languageEnglish (US)
Title of host publicationSociety of Petroleum Engineers - 73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011 - Incorporating SPE EUROPEC 2011
PublisherSociety of Petroleum Engineers
Pages66-70
Number of pages5
ISBN (Print)9781617829666
DOIs
StatePublished - Jan 1 2011

Publication series

Name73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011
Volume1

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

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