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• W2321829307 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 20143D plane-wave least-squares Kirchhoff migrationAuthors: Xin WangWei DaiYunsong HuangGerard T. SchusterXin WangKAUST and U of UtahSearch for more papers by this author, Wei DaiKAUST and U of UtahSearch for more papers by this author, Yunsong HuangKAUSTSearch for more papers by this author, and Gerard T. SchusterKAUSTSearch for more papers by this authorhttps://doi.org/10.1190/segam2014-1362.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract A three dimensional least-squares Kirchhoff migration (LSM) is developed in the prestack plane-wave domain to increase the quality of migration images and the computational efficiency. Due to the limitation of current 3D marine acquisition geometries, a cylindrical-wave encoding is adopted for the narrow azimuth streamer data. To account for the mispositioning of reflectors due to errors in the velocity model, a regularized LSM is devised so that each plane-wave or cylindrical-wave gather gives rise to an individual migration image, and a regularization term is included to encourage the similarities between the migration images of similar encoding schemes. Both synthetic and field results show that: 1) plane-wave or cylindrical-wave encoding LSM can achieve both computational and IO saving, compared to shot-domain LSM, however, plane-wave LSM is still about 5 times more expensive than plane-wave migration; 2) the regularized LSM is more robust compared to LSM with one reflectivity model common for all the plane-wave or cylindrical-wave gathers. Keywords: 3D, algorithm, inversion, migration, KirchhoffPermalink: https://doi.org/10.1190/segam2014-1362.1FiguresReferencesRelatedDetailsCited ByAn efficient and accurate finite-difference operator using adaptively discretized grids and its application for 3D least-squares reverse-time migration15 June 2020 | Arabian Journal of Geosciences, Vol. 13, No. 12Multiparameter least-squares reverse time migration for acoustic—elastic coupling media based on ocean bottom cable data26 March 2020 | Applied Geophysics, Vol. 16, No. 3Wave-equation migration velocity analysis using plane-wave common-image gathersBowen Guo and Gerard T. Schuster18 July 2017 | GEOPHYSICS, Vol. 82, No. 5 SEG Technical Program Expanded Abstracts 2014ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2014 Pages: 5183 publication data© 2014 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 05 Aug 2014 CITATION INFORMATION Xin Wang, Wei Dai, Yunsong Huang, and Gerard T. Schuster, (2014), 3D plane-wave least-squares Kirchhoff migration, SEG Technical Program Expanded Abstracts : 3974-3979. https://doi.org/10.1190/segam2014-1362.1 Plain-Language Summary Keywords3DalgorithminversionmigrationKirchhoffPDF DownloadLoading ..." @default.
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