Micro-seismic wavefield and illumination analysis in viscoelastic TTI media based on rotated staggered grid finite-difference method

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2017Microseismic wavefield and illumination analysis in viscoelastic TTI media based on rotated staggered grid finite-difference methodAuthors: Zhenan YaoCheng-yu SunZhenan YaoChina University of Petroleum–East ChinaSearch for more papers by this author and Cheng-yu SunChina University of Petroleum–East ChinaSearch for more papers by this authorhttps://doi.org/10.1190/segam2017-17631269.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract With the progress of seismic instruments and processing techniques, micro-seismic monitoring technique becomes more and more important in shale gas development and so on. Based on viscoelastic anisotropic first-order velocity-stress wave equations, micro-seismic wave fields, records and illumination maps were acquired by the rotated staggered grid finite-difference forward method. With seismic moment tensor decomposition, the force source was turn into velocity source and then loaded on the rotated staggered grids for ISO, DC and CLVD three kinds of basis sources at the first time in this paper. Then micro-seismic wave field and illumination characteristics were analyzed and results show that both focal mechanisms and medium types will affect the micro-seismic event radiation pattern and there are many differences among different cases, which could be used for focal mechanism or fracture parameters inversion. What's more, various prior information should be considered for the design of micro-seismic observation system based on main energy orientation analysis. Presentation Date: Wednesday, September 27, 2017 Start Time: 9:45 AM Location: Exhibit Hall C/D Presentation Type: POSTER Keywords: modeling, tensor, TTI, anisotropy, microseismicPermalink: https://doi.org/10.1190/segam2017-17631269.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2017ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2017 Pages: 6093 publication data© 2017 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 17 Aug 2017 CITATION INFORMATION Zhenan Yao and Cheng-yu Sun, (2017), "Microseismic wavefield and illumination analysis in viscoelastic TTI media based on rotated staggered grid finite-difference method," SEG Technical Program Expanded Abstracts : 4215-4219. https://doi.org/10.1190/segam2017-17631269.1 Plain-Language Summary KeywordsmodelingtensorTTIanisotropymicroseismicPDF DownloadLoading ...