Seismic response characteristics of sandstone reservoir based on patchy saturated model

PreviousNext No Access2016 Workshop: Rock Physics and Borehole Geophysics, Beijing, China, 28-30 August 2016Seismic response characteristics of sandstone reservoir based on patchy saturated modelAuthors: Li Shikai*Wen XiaotaoRuan YunqiLi TianLiu MinbingLi WenxiuLi Shikai*Chengdu University of TechnologySearch for more papers by this author, Wen XiaotaoChengdu University of TechnologySearch for more papers by this author, Ruan YunqiChengdu University of TechnologySearch for more papers by this author, Li TianChengdu University of TechnologySearch for more papers by this author, Liu MinbingChengdu University of TechnologySearch for more papers by this author, and Li WenxiuChengdu University of TechnologySearch for more papers by this authorhttps://doi.org/10.1190/RP2016-006 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The seismic response characteristics of gas-oil reservoir model can be connected with frequency through diffusive-viscous wave equation simulation theory, while White periodical layout sphere patchy saturated model can be used to describe the rock physics characteristics of classic gas sandstone. The theory of Johnson model takes out the frequency-dependent relationship of seismic phase velocity and quality factor by computing the dynamic bulk modulus. Great difference was observed on phase velocity of different models with different gas saturation, which can be as high as hundreds of meters per second in seismic frequency band. The reverse quality factor is high when frequency and gas saturation are high or quite low, which means greater attenuation of seismic energy. Providing the same diffusive and viscous parameters, we introduced the Carcione attenuation mechanism and pre-stack diffusive-viscous wave equation modeling based on phase shift plus interpolation method, seismic response of three classic sandstone reservoirs was simulated. The increasing of gas saturation can lead to remarkable “time delay” on the reflection of lower interface, especially in unconsolidated and medium consolidated sandstone reservoir, the main frequency of which also declined. However, permeability can only make much less difference in the unconsolidated sandstone. Keywords: sandstone, saturation, rock physics, wave equation, porosityPermalink: https://doi.org/10.1190/RP2016-006FiguresReferencesRelatedDetails 2016 Workshop: Rock Physics and Borehole Geophysics, Beijing, China, 28-30 August 2016ISSN (online):2159-6832Copyright: 2016 Pages: 149 publication data© 2016 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 30 Aug 2016 CITATION INFORMATION Li Shikai*, Wen Xiaotao, Ruan Yunqi, Li Tian, Liu Minbing, and Li Wenxiu, (2016), "Seismic response characteristics of sandstone reservoir based on patchy saturated model," SEG Global Meeting Abstracts : 21-24. https://doi.org/10.1190/RP2016-006 Plain-Language Summary Keywordssandstonesaturationrock physicswave equationporosityPDF DownloadLoading ...