Rock physics guided quantification of carbonate pore type effect on permeability heterogeneity

Abstract

PreviousNext No AccessSEG 2017 Workshop: Carbonate Reservoir E&P Workshop, Chengdu, China, 22-24 October 2017Rock physics guided quantification of carbonate pore type effect on permeability heterogeneityAuthors: Qifei HuangYuefeng Sun*Qifeng DouPanke SunYiwei JiangQingsheng ZhangQifei HuangTexas A&M UniversitySearch for more papers by this author, Yuefeng Sun*Texas A&M UniversitySearch for more papers by this author, Qifeng DouTexas A&M UniversitySearch for more papers by this author, Panke SunTexas A&M UniversitySearch for more papers by this author, Yiwei JiangTexas A&M UniversitySearch for more papers by this author, and Qingsheng ZhangTexas A&M UniversitySearch for more papers by this authorhttps://doi.org/10.1190/carbonate2017-08 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Carbonate rocks have complex permeability-porosity relationships due to the diversified pore types. This study aims at quantifying the permeability heterogeneity by describing the pore type variation based on integrated study of the core, log, and seismic data. A predefined pore structure parameter (γµ) from a rock physics model was selected as a pore structure index to describe the pore type variation in the studied carbonate reservoir. Integrated core and log analysis show that when γµ > 4, the dominant pore type is connected intercrystalline pore. When γµ < 4, the dominant pore type is isolated moldic pore. Two distinctive permeability trends classified by γµ are also observed due to pore type differences. At a fixed porosity, intercrystalline pores with larger pore throat size lead to much higher permeability compared to moldic pores. Rock physics based seismic inversion on impedance, porosity, γµ, and permeability show that the studied reservoirs are highly compartmentalized due to permeability variation as a result of changing of pore type from moldic pores to intercrystalline pores. Compared to acoustic impedance, permeability inversion better characterizes the reservoir heterogeneity. Production in such reservoir is challenged and can be assisted with better mapping of permeability heterogeneity. Keywords: carbonate, rock physics, permeability, heterogeneousPermalink: https://doi.org/10.1190/carbonate2017-08FiguresReferencesRelatedDetails SEG 2017 Workshop: Carbonate Reservoir E&P Workshop, Chengdu, China, 22-24 October 2017ISSN (online):2159-6832Copyright: 2017 Pages: 155 publication data© 2017 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 24 Oct 2017 CITATION INFORMATION Qifei Huang, Yuefeng Sun*, Qifeng Dou, Panke Sun, Yiwei Jiang, and Qingsheng Zhang, (2017), "Rock physics guided quantification of carbonate pore type effect on permeability heterogeneity," SEG Global Meeting Abstracts : 26-29. https://doi.org/10.1190/carbonate2017-08 Plain-Language Summary Keywordscarbonaterock physicspermeabilityheterogeneousPDF DownloadLoading ...