Application of combined imaging technology of multi azimuth seismic data in deepwater rugged seabed area

PreviousNext No AccessInternational Geophysical Conference, Beijing, China, 24-27 April 2018Application of combined imaging technology of multi azimuth seismic data in deepwater rugged seabed areaAuthors: Dun DengYong DengJian-wei HeXiao-xiao LiHai-long PengDun DengZhanjiang Branch of CNOOC Ltd., ZhanJiang 524057, ChinaSearch for more papers by this author, Yong DengZhanjiang Branch of CNOOC Ltd., ZhanJiang 524057, ChinaSearch for more papers by this author, Jian-wei HeZhanjiang Branch of CNOOC Ltd., ZhanJiang 524057, ChinaSearch for more papers by this author, Xiao-xiao LiZhanjiang Branch of CNOOC Ltd., ZhanJiang 524057, ChinaSearch for more papers by this author, and Hai-long PengZhanjiang Branch of CNOOC Ltd., ZhanJiang 524057, ChinaSearch for more papers by this authorhttps://doi.org/10.1190/IGC2018-046 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Because of water depth changed dramatically in the rough deep sea bottom of the continental-shelf slope break area and influenced by the the complex geological structure of mid-deep layers, it is difficult for the conventional narrow azimuth acquisition to meet the requirement of seismic imaging of the slope break sea and the target evaluation in the northern South China Sea. Based on a multi-azimuth 3D seismic data acquired in the rough deep sea bottom of BaoDao sag in Qiongdongnan Basin, the differences of migration velocity and seismic anisotropic parameters in different azimuths are analyzed, and the velocity model is built by joint tomographic inversion with improved accuracy. And then, prestack depth migration combined imaging is carried out with two-azimuth anisotropic velocity model, which realizes the combined imaging for multi azimuth 3D seiamic data. After the real seismic data analyzed, multi azimuth result is more stable and consecutive, improving the accury of seismic imaging of strata below rugged seabed and complex structure area, which are helpful for structural interpretation and target synthesis research. Keywords: azimuth, deepwater, imagingPermalink: https://doi.org/10.1190/IGC2018-046FiguresReferencesRelatedDetails 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 Dun Deng, Yong Deng, Jian-wei He, Xiao-xiao Li, and Hai-long Peng, (2018), "Application of combined imaging technology of multi azimuth seismic data in deepwater rugged seabed area," SEG Global Meeting Abstracts : 186-189. https://doi.org/10.1190/IGC2018-046 Plain-Language Summary KeywordsazimuthdeepwaterimagingPDF DownloadLoading ...