A microseismic-based analysis of CO2 energized fracturing of shale gas reservoir

PreviousNext No AccessSEG 2020 Workshop: 2nd SEG Borehole Geophysics Workshop, Virtual, 26–27 November 2020A microseismic-based analysis of CO2 energized fracturing of shale gas reservoirAuthors: Fangdong ChuHua ZhangTengjiao LiuGuocheng GaoQingxi GuoFangdong ChuBGP, CNPCSearch for more papers by this author, Hua ZhangBGP, CNPCSearch for more papers by this author, Tengjiao LiuBGP, CNPCSearch for more papers by this author, Guocheng GaoBGP, CNPCSearch for more papers by this author, and Qingxi GuoResearch Institute of Yanchang Petroleum Co., Ltd.Search for more papers by this authorhttps://doi.org/10.1190/bhgp2020-26.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract It can increase the formation energy and reduce the rock fracture pressure effectively to inject liquid CO2 during hydraulic fracturing. Microseismic monitoring is used to real time monitor and analyze the events generated by the fracturing of the fractured rocks, compare the source parameters such as energy and stress drop of CO2 energization and hydraulic fracturing events, finding that the energy of the events generated by CO2 is weak with a low rock fracture pressure; and the comparison of the spatial distribution of the microseismic events shows that the shape of the CO2 fracture network is mainly affected by the fracturing parameters, such as pressure and injection rate. In this way, the source mechanism that how CO2 energization causes rock fractures is further found out. Keywords: microseismic monitoring, CO2, hydraulic fracturing, treatment pressurePermalink: https://doi.org/10.1190/bhgp2020-26.1FiguresReferencesRelatedDetails SEG 2020 Workshop: 2nd SEG Borehole Geophysics Workshop, Virtual, 26–27 November 2020ISSN (online):2159-6832Copyright: 2020 Pages: 167 publication data© 2020 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 30 Dec 2020 CITATION INFORMATION Fangdong Chu, Hua Zhang, Tengjiao Liu, Guocheng Gao, and Qingxi Guo, (2020), "A microseismic-based analysis of CO2 energized fracturing of shale gas reservoir," SEG Global Meeting Abstracts : 98-102. https://doi.org/10.1190/bhgp2020-26.1 Plain-Language Summary Keywordsmicroseismic monitoringCO2hydraulic fracturingtreatment pressurePDF DownloadLoading ...