Inversion of reservoir porosity and permeability based on velocity dispersion in 3D two-phase orthotropic crack medium

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2019Inversion of reservoir porosity and permeability based on velocity dispersion in 3D two-phase orthotropic crack mediumAuthors: Xianwen ZhangDeli WangTingen FanJingyu ZhangXin DuXianwen ZhangCNOOC Research Institute Ltd.Search for more papers by this author, Deli WangJilin UniversitySearch for more papers by this author, Tingen FanCNOOC Research Institute Ltd.Search for more papers by this author, Jingyu ZhangCNOOC Research Institute Ltd.Search for more papers by this author, and Xin DuCNOOC Research Institute Ltd.Search for more papers by this authorhttps://doi.org/10.1190/segam2019-3215662.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractReservoir parameter inversion is an essential geophysical method to quantify the reservoir volume. Oil-gas reservoirs are often presented as two-phase medium and anisotropic features, which lead to a great challenge for the reservoir parameters prediction. In the abstract, a new porosity and permeability inversion technology is proposed for 3D two-phase cracked orthorhombic media based on the BISQ mechanism. First, we derive the porous elastic wave equation of 3-D two-phase orthotropic anisotropic medium and build the relationships among porosity, permeability and phase velocity. Then we model and analyze the effects of porosity and permeability on velocity dispersion. The results show that it is feasibility to use the velocity dispersion to make porosity and permeability inversion. Finally, using the genetic algorithm, we implement the porosity and permeability inversion based on velocity dispersion, and also show some analysis for the algorithm stability and accuracy.Presentation Date: Tuesday, September 17, 2019Session Start Time: 1:50 PMPresentation Time: 3:05 PMLocation: 217DPresentation Type: OralKeywords: inversion, porosity, permeability, dispersionPermalink: https://doi.org/10.1190/segam2019-3215662.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2019ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2019 Pages: 5407 publication data© 2019 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 10 Aug 2019 CITATION INFORMATION Xianwen Zhang, Deli Wang, Tingen Fan, Jingyu Zhang, and Xin Du, (2019), "Inversion of reservoir porosity and permeability based on velocity dispersion in 3D two-phase orthotropic crack medium," SEG Technical Program Expanded Abstracts : 419-423. https://doi.org/10.1190/segam2019-3215662.1 Plain-Language Summary KeywordsinversionporositypermeabilitydispersionPDF DownloadLoading ...