Using 3D seismic data to predict the sweet spots in shale reservoir: A case study of Lower Silurian Longmaxi Formation in W204 block, Sichuan Basin

PreviousNext No AccessInternational Geophysical Conference, Qingdao, China, 17-20 April 2017Using 3D seismic data to predict the sweet spots in shale reservoir: A case study of Lower Silurian Longmaxi Formation in W204 block, Sichuan BasinAuthors: Sheng ChenWenzhi ZhaoQingcai ZengQing YangHuaxing HouShaohua GaiShihai BaoXinyu LiSheng ChenChina University of Petroleum (Beijing), and PetroChina Research Institute of Petroleum Exploration Yonglin OuyangSearch for more papers by this author, Wenzhi ZhaoChina University of Petroleum (Beijing), and PetroChina Research Institute of Petroleum Exploration Yonglin OuyangSearch for more papers by this author, Qingcai ZengPetroChina Research Institute of Petroleum ExplorationSearch for more papers by this author, Qing YangPetroChina Research Institute of Petroleum ExplorationSearch for more papers by this author, Huaxing HouPetroChina Research Institute of Petroleum ExplorationSearch for more papers by this author, Shaohua GaiPetroChina Research Institute of Petroleum ExplorationSearch for more papers by this author, Shihai BaoPetroChina Research Institute of Petroleum ExplorationSearch for more papers by this author, and Xinyu LiPetroChina Research Institute of Petroleum ExplorationSearch for more papers by this authorhttps://doi.org/10.1190/IGC2017-320 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract W204 block in the Sichuan Basin was a pioneer in shale gas exploration and development within China. The Lower Silurian Longmaxi Formation, the zone of interest in this block, is of great potential for its abundant resources. Previous studies in this block often focused on shale play evaluation and reservoir characterization. Geophysical prospecting is just at its beginning and thus has not provided enough information for the deployment of horizontal well drilling. This paper predicts shale gas sweet spots based on logging and 3D seismic data. The former is used to define sweet spots in vertical direction; the latter is used to predict reservoir thickness, TOC content, brittleness and pore pressure through petrophysical analysis and prestack inversion. The results show that shale gas sweet spots in this block vertically concentrate within 30 m above the bottom of the Longmaxi Formation and laterally distribute in the southeast and southwest of the 3D seismic area. These results obtained by the integration of logging and seismic technologies provide useful information for horizontal well deployment and wellbore trajectory design. Keywords: 3D, Asia, reservoir characterization, shale gas, loggingPermalink: https://doi.org/10.1190/IGC2017-320FiguresReferencesRelatedDetails 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 Sheng Chen, Wenzhi Zhao, Qingcai Zeng, Qing Yang, Huaxing Hou, Shaohua Gai, Shihai Bao, and Xinyu Li, (2017), "Using 3D seismic data to predict the sweet spots in shale reservoir: A case study of Lower Silurian Longmaxi Formation in W204 block, Sichuan Basin," SEG Global Meeting Abstracts : 1261-1264. https://doi.org/10.1190/IGC2017-320 Plain-Language Summary Keywords3DAsiareservoir characterizationshale gasloggingPDF DownloadLoading ...