A new strategy for absorption attenuation compensation in near-surface medium

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2016A new strategy for absorption attenuation compensation in near-surface mediumAuthors: Ji Jie SongJin Ying YuMeng ZhangCheng Ye YuJi Jie SongSinopecSearch for more papers by this author, Jin Ying YuResearch Institute of Sinopec Northwest Oil Field CompanySearch for more papers by this author, Meng ZhangGeophysical Research Institute of Sinopec Shengli Oilfield CompanySearch for more papers by this author, and Cheng Ye YuExploration and Development Research Institute of Daqing Oilfield CompanySearch for more papers by this authorhttps://doi.org/10.1190/segam2016-13681557.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract A key technology of high resolution seismic exploration is absorption attenuation compensation in near surface medium, and its core technology is to build a relatively accurate near surface Q model and to compensate for the absorption attenuation of the model. In this paper, a new strategy for absorption attenuation compensation in near surface medium is proposed. To begin with, a fine surface velocity model was established based on single well and twin well micro logging which are relatively evenly distributed in the 3D work area. Then, a joint observation system of single well micro logging and surface microseismic was designed to set receivers in both near surface low velocity layer and high velocity layer. A relatively accurate and detailed near surface Q value was estimated by centroid frequency shift method. After that ray tracing was performed based on accurate near surface velocity model to extract signal from shot data and calculate macro Q value on the basis of centroid frequency shift method. The above two dimensions of Q value model were merged together by information fusion of different scale to build a complete near surface Q simulation. Finally, prestack seismic data were compensated by way of absorption attenuation method based on CMP gather and subsequent processing was performed. Actual numerical application proves the effectiveness of the strategy. Presentation Date: Tuesday, October 18, 2016 Start Time: 8:00:00 AM Location: Lobby D/C Presentation Type: POSTER Keywords: attenuation, Q, acquisitionPermalink: https://doi.org/10.1190/segam2016-13681557.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2016ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2016 Pages: 5654 publication data© 2016 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 01 Sep 2016 CITATION INFORMATION Ji Jie Song, Jin Ying Yu, Meng Zhang, and Cheng Ye Yu, (2016), "A new strategy for absorption attenuation compensation in near-surface medium," SEG Technical Program Expanded Abstracts : 2418-2422. https://doi.org/10.1190/segam2016-13681557.1 Plain-Language Summary KeywordsattenuationQacquisitionPDF DownloadLoading ...