Removal of internal multiples with the common-focus-point (CFP) approach: Part 1 — Explanation of the theory | Zendy

A. J. Berkhout | Zendy; D. J. Verschuur | Zendy

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Removal of internal multiples with the common-focus-point (CFP) approach: Part 1 — Explanation of the theory

Author(s) -

A. J. Berkhout,

D. J. Verschuur

Publication year - 2005

Publication title -

geophysics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.178

H-Index - 172

eISSN - 1942-2156

pISSN - 0016-8033

DOI - 10.1190/1.1925753

Subject(s) - multiple , algorithm , focus (optics) , point (geometry) , computer science , scattering , internal wave , surface (topology) , mathematics , optics , physics , geometry , arithmetic

Removal of surface and internal multiples can be formulated by removing the influence of downward-scattering boundaries and downward-scattering layers. The involved algorithms can be applied in a model-driven or a data-driven way. A unified description is proposed that relates both types of algorithms based on wave theory. The algorithm for the removal of surface multiples shows that muted shot records play the role of multichannel prediction filters. The algorithm for the removal of internal multiples shows that muted CFP gathers play the role of multichannel prediction filters. The internal multiple removal algorithm is illustrated with numerical examples. The conclusion is that the layer-related version of the algorithm has significant practical advantages.Applied Science

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