Application of multifocusing method for subsurface imaging

Evgeny Landa*, Boris Gurevich, Shemer Keydar, Pinchas Trachtman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

The multifocusing method consists of stacking seismic data with arbitrary source-receiver distribution according to a new paraxial moveout correction. This multifocusing moveout correction is based on a local spherical approximation of the reflection wave fronts in the vicinity of an observation surface. The multifocusing method does not require any knowledge of the subsurface model and can produce an accurate zero offset section, even in cases of a complex geological structure and/or low signal-to-noise ratio. The moveout correction parameters are the emergence angle and the wavefront curvatures for the normal wave and normal-incidence-point wave. The estimated sets of these parameters can be looked upon as new wavefield attributes containing important information regarding the subsurface model. Application of the multifocusing algorithm to synthetic and real data examples demonstrates its advantages in comparison with conventional CMP processing.

Original languageEnglish
Pages (from-to)283-300
Number of pages18
JournalJournal of Applied Geophysics
Volume42
Issue number3-4
DOIs
StatePublished - Dec 1999
Externally publishedYes

Funding

FundersFunder number
European Commission

    Keywords

    • Multifocusing method
    • Seismic data
    • Subsurface imaging

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