Practical implementation of three‐dimensional poststack depth migration | Zendy

Moshe Reshef | Zendy; David Kessler | Zendy

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Practical implementation of three‐dimensional poststack depth migration

Author(s) -

Moshe Reshef,

David Kessler

Publication year - 1989

Publication title -

geophysics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.178

H-Index - 172

eISSN - 1942-2156

pISSN - 0016-8033

DOI - 10.1190/1.1442656

Subject(s) - extrapolation , seismic migration , computation , computer science , computational science , algorithm , domain (mathematical analysis) , computational complexity theory , field (mathematics) , function (biology) , volume (thermodynamics) , geology , parallel computing , mathematics , geophysics , mathematical analysis , physics , quantum mechanics , evolutionary biology , pure mathematics , biology

This work deals with the practical aspects of three‐dimensional (3-D) poststack depth migration. A method, based on depth extrapolation in the frequency domain, is used for the migration. This method is suitable for structures with arbitrary velocity variation, and the number of computations required can be directly related to the complexity of the given velocity function. We demonstrate the superior computational efficiency of this method for 3-D depth migration relative to the reverse‐time migration method. The computational algorithm used for the migration is designed for a multi‐processor machine (Cray-XMP/48) and takes advantage of advanced disk technologies to overcome the input/output (I/O) problem. The method is demonstrated with both synthetic and field data. The migration of a typical 3-D data volume can be accomplished in only a few hours.

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