3D VSP imaging. Some general problems

Previous No AccessSEG Technical Program Expanded Abstracts 20153D VSP imaging. Some general problemsAuthors: Emanouil BliasBaker HughesEmanouil BliasSearch for more papers by this author and Baker HughesSearch for more papers by this authorhttps://doi.org/10.1190/segam2015-5807268.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Data from 3D surface seismic and 3DVSP provide velocity information and 3D images of the subsurface. In many cases however, 3DVSP and 3D seismic images are different. In this paper, I give explanations to the reason why one should not always expect VSP and surface seismic subsurface images to be the same, even within the same bandwidth. In a 3DVSP survey, for each image point around the well, there is generally only one source-receiver azimuth contributing to this image point. For 3D surface seismic the image point is generally constructed from source-receiver pairs in multiple azimuths. Therefore, in an azimuthally anisotropic subsurface, 3DVSP and 3D surface seismic image amplitudes will be different. When recorded in environments that exhibit a strong AVO response, the absence of near zero-offset raypaths in 3DVSP data also leads to different image amplitudes compared to 3D surface seismic data which normally has close to zero-offset rays. It has been shown that 3DVSP imaging is more sensitive to depth velocity model errors than is 3D surface seismic. The 3DVSP data provides the most-reliable interval orthorhombic parameters that should be used for VSP and surface seismic processing and imaging. Reflected waves should be used when inverting traveltimes to improve the structural velocity model derived from 3DVSP data. Keywords: 3D, VSP, imaging, AVO/AVA, anisotropyPermalink: https://doi.org/10.1190/segam2015-5807268.1FiguresReferencesRelatedDetailsCited byFractured basement imaging using random-space-shift reverse time migration: A vertical seismic profile survey in the Bohai Bay Basin, ChinaJingjing Zong, Jizhong Yang, Arthur Cheng, Yunyue Elita Li, Yukai Wo, and Yue Du10 November 2021 | GEOPHYSICS, Vol. 87, No. 1Denoising Analysis and Processing Methods of Distributed Acoustic Sensing (DAS) Vertical Seismic Profiling (VSP) Data10 December 2021The application of least-squares extended reverse-time migration to vertical seismic profiling dataJizhong Yang, Jingjing Zong, Arthur Cheng, and Yunyue Elita Li30 December 2020A walkaway VSP survey for fractured-basement imaging using RSS-RTMJingjing Zong, Jizhong Yang, Arthur Cheng, and Yunyue Elita Li30 September 2020The behavior of least-squares extended reverse time migration for vertical seismic profiling dataJizhong Yang, Jingjing Zong, Arthur Cheng, and Yunyue Elita Li30 September 2020Fast least-squares reverse time migration of VSP free-surface multiples with dynamic phase-encoding schemesXuejian Liu, Yike Liu, and Majid Khan31 May 2018 | GEOPHYSICS, Vol. 83, No. 44D DAS VSP as a tool for frequent seismic monitoring in deep waterA. Mateeva, J. Lopez, D. Chalenski, M. Tatanova, P. Zwartjes, Z. Yang, S. Bakku, K. de Vos, and H. Potters28 November 2017 | The Leading Edge, Vol. 36, No. 124D DAS VSP in deepwater: Proof of concept and next stepsPaul Zwartjes, Albena Mateeva, Maria Tatanova, David Chalenski, Zhaohui Yang, Jorge Lopez, Koos de Vos, and Hans Potters17 August 2017Application of 3D VSP in complex reservoir development in eastern ChinaZhao Haiying, Chen Yuanzhong, Tian Jiantao, Li Yanpeng, Wang Yanhua, and Huang Jianhua17 August 2017Borehole Geophysics and Vertical Seismic Profile Complete Session17 August 2017Time Lapse Complete Session17 August 2017Two record-setting subsalt 3D VSP acquisitions in the Gulf of Mexico 2015: Experience and learningsQingsong Li, Anya Reitz, Tianxia Jia, Kenneth Hartman, Francis Rollins, William Slopey, Gary Deren, Scott Michell, John Naranjo, Raymond Abma, and Michael Mahnke1 September 2016Vertical Seismic Profile Complete Session1 September 2016 SEG Technical Program Expanded Abstracts 2015ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2015 Pages: 5634 publication data© 2015 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 19 Aug 2015 CITATION INFORMATION Emanouil Blias and Baker Hughes, (2015), "3D VSP imaging. Some general problems," SEG Technical Program Expanded Abstracts : 5630-5634. https://doi.org/10.1190/segam2015-5807268.1 Plain-Language Summary Keywords3DVSPimagingAVO/AVAanisotropyPDF DownloadLoading ...