中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 其他部门
Diagenetic heterogeneity, pore throats characteristic and their effects on reservoir quality of the Upper Triassic tight sandstones of Yanchang Formation in Ordos Basin, China

文献类型：期刊论文

作者Dou, Wenchao1,2,3; Liu, Luofu1,2; Wu, Kangjun4; Xu, Zhengjian1,2; Liu, Xiaoxiang1,2; Feng, Xu1,2
刊名MARINE AND PETROLEUM GEOLOGY
出版日期2018-12-01
卷号98页码:243-257
ISSN号0264-8172
关键词Tight sandstones Yanchang Formation Ordos basin Diagenetic heterogeneity Pore throats characteristic Reservoir quality
DOI10.1016/j.marpetgeo.2018.08.019
英文摘要Upper Triassic tight sandstones in Ordos Basin are typical tight oil reservoirs in China. Using a combination of thin sections, SEM, BSE, EDS and mercury injection, 48 sandstone core samples from 17 wells in the study area were collected to investigate the diagenetic heterogeneity, pore-throat characteristics and their correlations with reservoir quality. Five diagenetic types were identified according to their specific diagenetic evolution pathways. Type A sandstones are characterized by abundant authigenic chlorite rims, rare quartz cement and high porosity. Type B sandstones underwent moderate compaction, moderate dissolution and moderate cementation. Samples from Type C are characterized by intense dissolution and large amounts of carbonate cements, they can be subdivided into two categories according to if pore throats in larger size were still reserved (Type C-2 ) or not (Type C-1 ) after late-stage cementation. Type D sandstones underwent intense compaction, moderate dissolution and minor carbonate cementation. Type E sandstones are characterized by the most intense compaction. Depending on the pore-throat size distributions from MICP analysis, three sandstone types with their own specific pore-throat characteristics were identified. Type I sandstones generally contain a certain amount of mesopores (including a few macropores) and pore spaces are dominant intergranular pores, intragranular pores and even oversized pores. These sandstones generally correspond to Type A, B, C-2 and D sandstones and thus represent good-quality reservoir. Type II sandstones usually contain dominant transitional pores (77% in average) and their pore systems mianly consist of clay intercrystal microporosity and a few isolated intergranular or intragranular pores. Type III sandstones are representative by relatively abundant micropores (17.7% in average) and pore spaces are dominant clay intercrystal microporosity. Type II and Type III pore structures generally correspond to Type C-1 and E and thus represent poor-quality reservoir. This study gives insights into the link between different diagenetic features, pore structures and their impact on reservoir quality and this will be helpful for reservoir prediction.
WOS关键词SECONDARY POROSITY ; MASS-TRANSFER ; CONSTRAINTS ; PREDICTION ; CONTACTS ; ORIGIN ; SHALE
资助项目National Natural Science Fund Project of China[41372143] ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry[20130007110002]
WOS研究方向Geology
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000451360000015
资助机构National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; National Natural Science Fund Project of China ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry ; Specialized Research Fund for the Doctoral Program of Higher Education of Chinese Education Ministry
源URL[http://ir.iggcas.ac.cn/handle/132A11/89597]  
专题地质与地球物理研究所_其他部门
通讯作者Liu, Luofu
作者单位1.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China
2.China Univ Petr, Coll Geosci, Basin & Reservoir Res Ctr, Beijing 102249, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
4.Chongqing Univ Sci & Technol, Sch Petr Engn, Chongqing 401331, Peoples R China
推荐引用方式
GB/T 7714		 Dou, Wenchao,Liu, Luofu,Wu, Kangjun,et al. Diagenetic heterogeneity, pore throats characteristic and their effects on reservoir quality of the Upper Triassic tight sandstones of Yanchang Formation in Ordos Basin, China[J]. MARINE AND PETROLEUM GEOLOGY,2018,98:243-257.
APA Dou, Wenchao,Liu, Luofu,Wu, Kangjun,Xu, Zhengjian,Liu, Xiaoxiang,&Feng, Xu.(2018).Diagenetic heterogeneity, pore throats characteristic and their effects on reservoir quality of the Upper Triassic tight sandstones of Yanchang Formation in Ordos Basin, China.MARINE AND PETROLEUM GEOLOGY,98,243-257.
MLA Dou, Wenchao,et al."Diagenetic heterogeneity, pore throats characteristic and their effects on reservoir quality of the Upper Triassic tight sandstones of Yanchang Formation in Ordos Basin, China".MARINE AND PETROLEUM GEOLOGY 98(2018):243-257.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。