High Density wide azimuth 3D Seismic data Processing technique and its applications

PreviousNext No AccessInternational Geophysical Conference, Qingdao, China, 17-20 April 2017High Density wide azimuth 3D Seismic data Processing technique and its applicationsAuthors: Li Daoshan*Cao MengqiLi Daoshan*BGP, CNPCSearch for more papers by this author and Cao MengqiBGP, CNPCSearch for more papers by this authorhttps://doi.org/10.1190/IGC2017-347 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract For HTI anisotropic medium, the P-wave seismic reflection features vary with horizontal axis of symmetry, in other words, they vary with acquisition azimuth. In general, azimuth information can be retained with sectoring migration of 3D seismic data for azimuthal anisotropic research. But sectoring approach may suffer from arbitrary sector decisions, non-uniform fold and compromised azimuth, so the precision of interpretation is not enough. In recent years, OVT processing on wide azimuth and high density data is popular. The snail gathers obtained from migration data in OVT domain, which retain both offsets and azimuths information, can meet the needs of azimuth anisotropic study based on HTI anisotropy theory. Migration image are improved significantly by azimuthal anisotropy correction in fracture-developed zone. What is more, the accuracy of fracture detection is increased distinctly based on snail gathers with reasonably optimized offset range and azimuth range. In this paper, we discuss the flow and key techniques of OVT processing briefly and then give two application examples about fracture detection in Junggar basin and Tarim basin in China. Keywords: azimuth, 3D, processing, HTI, anisotropy, acquisitionPermalink: https://doi.org/10.1190/IGC2017-347FiguresReferencesRelatedDetails International Geophysical Conference, Qingdao, China, 17-20 April 2017ISSN (online):2159-6832Copyright: 2017 Pages: 1525 publication data© 2017 Published in electronic format with permission by the Society of Exploration Geophysicists and Chinese Geophysical SocietyPublisher:Society of Exploration Geophysicists HistoryPublished Online: 31 May 2017 CITATION INFORMATION Li Daoshan* and Cao Mengqi, (2017), "High Density wide azimuth 3D Seismic data Processing technique and its applications," SEG Global Meeting Abstracts : 1355-1358. https://doi.org/10.1190/IGC2017-347 Plain-Language Summary Keywordsazimuth3DprocessingHTIanisotropyacquisitionPDF DownloadLoading ...