Research on the method of time-distance relation under wide-angle reflection normal moveout with high precision

PreviousNext No AccessInternational Geophysical Conference, Beijing, China, 24-27 April 2018Research on the method of time-distance relation under wide-angle reflection normal moveout with high precisionAuthors: Wei WangYong AnWei WangState Key Laboratory of Petroleum Resource and Prospecting, CNPC Key Lab of Geophysical Exploration, China University of PetroleumSearch for more papers by this author and Yong AnState Key Laboratory of Petroleum Resource and Prospecting, CNPC Key Lab of Geophysical Exploration, China University of PetroleumSearch for more papers by this authorhttps://doi.org/10.1190/IGC2018-095 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The conventional hyperbolie normal moveout equation is reasonable only when the ratio of offset to depth is small enough. The conventional dynamic correction method will produce more serious perturbation, and the nonhyperbolic correction method must be used for the nonhyperbolic correction method. However, the conventional nonhyperbolic correction equation Increase the error increases. In this paper, the Chebyshev polynomial truncation approximation Taylor expansion method is proposed, and on this basis, by increasing the adjustment coefficient and making constant coefficient optimization, the accuracy of the long offset motion correction equation is greatly improved The Theoretical analysis and numerical results show that the Chebyshev polynomial truncation minimizes the maximum error of high order truncation, while the simulated annealing optimization can further improve the accuracy of the motion correction, so as to realize the high precision dynamic correction under the long offset. Keywords: reflection, moveout, optimizationPermalink: https://doi.org/10.1190/IGC2018-095FiguresReferencesRelatedDetails International Geophysical Conference, Beijing, China, 24-27 April 2018ISSN (online):2159-6832Copyright: 2018 Pages: 1821 publication data© 2018 Published in electronic format with permission by the Society of Exploration Geophysicists and Chinese Geophysical SocietyPublisher:Society of Exploration Geophysicists HistoryPublished Online: 11 Dec 2018 CITATION INFORMATION Wei Wang and Yong An, (2018), "Research on the method of time-distance relation under wide-angle reflection normal moveout with high precision," SEG Global Meeting Abstracts : 390-393. https://doi.org/10.1190/IGC2018-095 Plain-Language Summary KeywordsreflectionmoveoutoptimizationPDF DownloadLoading ...