Curvelet-based migration preconditioning and scaling

Felix J. Herrmann, Cody R. Brown, Yogi A. Erlangga, Peyman P. Moghaddam

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The extremely large size of typical seismic imaging problems has been a major stumbling block for iterative techniques to attain accurate migration amplitudes. These iterative methods are important because they complement theoretical approaches hampered by difficulties controlling problems such as finite-acquisition aperture, source-receiver frequency response, and directivity. To solve these problems, we apply preconditioning, which significantly improves convergence of least-squares migration. We discuss different levels of preconditioning: corrections for the order of the migration operator, corrections for spherical spreading, and position- and reflector-dip-dependent amplitude errors. Although the first two corrections correspond to simple scalings in the Fourier and physical domain, the third correction requires phase-space (space spanned by location and dip) scaling, which we carry out with curvelets. Our combined preconditioner significantly improves the convergence of least-squares wave-equation migration on a line from the SEG/EAGE AA' salt model.

Original languageEnglish
Pages (from-to)A41-A46
JournalGeophysics
Volume74
Issue number4
DOIs
Publication statusPublished - Jan 1 2009

ASJC Scopus subject areas

  • Geochemistry and Petrology

Fingerprint Dive into the research topics of 'Curvelet-based migration preconditioning and scaling'. Together they form a unique fingerprint.

  • Cite this

    Herrmann, F. J., Brown, C. R., Erlangga, Y. A., & Moghaddam, P. P. (2009). Curvelet-based migration preconditioning and scaling. Geophysics, 74(4), A41-A46. https://doi.org/10.1190/1.3124753