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  2. 地质与地球物理研究所
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  4. 中国科学院油气资源研究重点实验室
Reservoir petrofacies - A tool for characterization of reservoir quality and pore structures in a tight sandstone reservoir: A study from the sixth member of Upper Triassic Yanchang Formation, Ordos Basin, China

文献类型：期刊论文

作者Cao, Binfeng1,2,4; Sun, Wei3; Li, Jun5
刊名JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
出版日期2021-04-01
卷号199页码:22
关键词Diagenesis Petrofacies Reservoir quality Pore structures Tight sandstones Yanchang Formation
ISSN号0920-4105
DOI10.1016/j.petrol.2020.108294
英文摘要Reservoir petrofacies is an important tool for the better understanding of the key petrographic parameters (primary texture and detrital component, types and processes of diagenetic alteration) that control reservoir properties of tight sandstones. This study aims to investigate sandstone texture and composition, and diagenetic features of the sixth member of Upper Triassic Yanchang Formation (YC6 member), Ordos Basin, China, and to examine controls of diagenesis and petrofacies on reservoir quality and pore structures of tight sandstone reservoirs. This study has been carried out using petrography, XRD, SEM, routine core analysis and mercury intrusion capillary pressure (MICP) test. The YC6 member sandstones are moderately well sorted, very fine- to fine-grained arkoses. The reservoir quality and pore throat distributions are highly heterogeneous in the sandstones. Four reservoir petrofacies are defined based on the combination of sandstone detrital components, diagenetic processes, pore types and reservoir properties. Contrasting diagenetic characteristics between these petrofacies are mainly determined by detrital grain size through ductile grain compaction. Ductile grain compaction has a significant control on porosity and permeability of the sandstones. Especially, the poor quality has been encountered in the petrofacies where ductile grain content is >12%. Calcite cement has helped destroy quality of the petrofacies where the cement is present in amounts >15%. Reservoir quality is best for the petrofacies that is poor in both ductile grain and calcite cement and commensurately is rich in secondary dissolution. Four pore-facies types are defined based on the dominant pore throat dimension of the sandstones. The large pore-throat regime determines permeability and fluid flow of reservoir rocks. A good correlation between pore-facies and petrofacies indicates diagenetic effect on pore structures of the sandstones. The study provides insights into how reservoir quality and pore structures of tight sandstone reservoirs are correlated with reservoir petrofacies.
资助项目National Natural Science Foundation of China[41902135] ; China Postdoctoral Science Foundation[2018M641465] ; National Science and Technology Major Project[2017ZX05008-004] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010202]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000615188400028
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; National Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/100081]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Cao, Binfeng
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Northwest Univ, Dept Geol, Xian 710069, Peoples R China
4.Chinese Acad Sci, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
5.China Univ Geosci, Sch Earth Resources, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Cao, Binfeng,Sun, Wei,Li, Jun. Reservoir petrofacies - A tool for characterization of reservoir quality and pore structures in a tight sandstone reservoir: A study from the sixth member of Upper Triassic Yanchang Formation, Ordos Basin, China[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2021,199:22.
APA Cao, Binfeng,Sun, Wei,&Li, Jun.(2021).Reservoir petrofacies - A tool for characterization of reservoir quality and pore structures in a tight sandstone reservoir: A study from the sixth member of Upper Triassic Yanchang Formation, Ordos Basin, China.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,199,22.
MLA Cao, Binfeng,et al."Reservoir petrofacies - A tool for characterization of reservoir quality and pore structures in a tight sandstone reservoir: A study from the sixth member of Upper Triassic Yanchang Formation, Ordos Basin, China".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 199(2021):22.

入库方式： OAI收割

来源：地质与地球物理研究所

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