Regularized plane-wave least-squares Kirchhoff migration

Xin Wang, Wei Dai, Gerard T. Schuster

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

A Kirchhoff least-squares migration (LSM) is developed in the prestack plane-wave domain to increase the quality of migration images. A regularization term is included that accounts for mispositioning of reflectors due to errors in the velocity model. Both synthetic and field results show that: 1) LSM with a reflectivity model common for all the plane-wave gathers provides the best image when the migration velocity model is accurate, but it is more sensitive to the velocity errors, 2) the regularized plane-wave LSM is more robust in the presence of velocity errors, and 3) LSM achieves both computational and IO saving by plane-wave encoding compared to shot-domain LSM for the models tested.
Original languageEnglish (US)
Title of host publicationSEG Technical Program Expanded Abstracts 2013
PublisherSociety of Exploration Geophysicists
Pages3242-3246
Number of pages5
DOIs
StatePublished - Aug 19 2013

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