The effect of chlorite rims on reservoir quality in Chang 7 sandstone reservoirs in the Ordos Basin, China

doi:10.1016/j.marpetgeo.2023.106506

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	The effect of chlorite rims on reservoir quality in Chang 7 sandstone reservoirs in the Ordos Basin, China
	Dou, Wenchao 5; Lin, Mian 4,5; Liu, Luofu 2,3; Jia, Langbo 1
刊名	MARINE AND PETROLEUM GEOLOGY
	2023-12-01
卷号	158 页码:16
关键词	Sandstone reservoir Porosity preservation Chlorite rim Diagenesis
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2023.106506
通讯作者	Lin, Mian(linmian@imech.ac.cn)
英文摘要	Chlorite rims have been of interest to petroleum geologists over the past several decades, as a significant number of abnormal high-porosity sandstone reservoirs at great depths have been related to chlorite rims. To clarify the contribution of chlorite rims to porosity preservation in sandstones, the relationship between chlorite rims and porosity evolution in Chang 7 sandstones of the Upper Triassic Yanchang Formation in the Ordos Basin in northcentral China was investigated using thin sections, scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction analyses. Based on the detrital composition and diagenetic evolution pathway analyses, it was concluded that chlorite rims inhibited the formation of quartz cementation. However, in addition to quartz cementation, compaction and other cements (commonly carbonates and clays) also control the porosity evolution of sandstones. In sandstones in which porosity reduction is largely controlled by compaction or other cements, chlorite rims may have a limited effect on porosity preservation. Thus, chlorite rims can play an important role in porosity preservation only in sandstones in which quartz cementation is the main process of porosity destruction. The results of this study indicate that the development of high-porosity sandstones is often controlled by many factors, and the effects of chlorite rims on porosity preservation are not always significant.
资助项目	National Natural Science Foundation of China[42030808] ; National Natural Science Foundation of China[41372143] ; Research Fund for the Doctoral Program of Higher Education[20130007110002]
WOS关键词	TRIASSIC YANCHANG FORMATION ; ANOMALOUSLY HIGH-POROSITY ; DEEPLY BURIED SANDSTONES ; GRAIN-COATING CHLORITE ; PORE-LINING CHLORITE ; QUARTZ-CEMENTATION ; DIAGENETIC HETEROGENEITY ; OIL EMPLACEMENT ; FLOW DEPOSITS ; GAS-FIELD
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:001103863200001
资助机构	National Natural Science Foundation of China ; Research Fund for the Doctoral Program of Higher Education
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93584]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Lin, Mian
作者单位	1.China Changqing Oil Field Co Ltd, Explorat & Dev Res Inst Petro, Xian 710018, Shaanxi, Peoples R China 2.China Univ Petr, Coll Geosci, Basin & Reservoir Res Ctr, Beijing 102249, Peoples R China 3.China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Dou, Wenchao,Lin, Mian,Liu, Luofu,et al. The effect of chlorite rims on reservoir quality in Chang 7 sandstone reservoirs in the Ordos Basin, China[J]. MARINE AND PETROLEUM GEOLOGY,2023,158:16.
APA	Dou, Wenchao,Lin, Mian,Liu, Luofu,&Jia, Langbo.(2023).The effect of chlorite rims on reservoir quality in Chang 7 sandstone reservoirs in the Ordos Basin, China.MARINE AND PETROLEUM GEOLOGY,158,16.
MLA	Dou, Wenchao,et al."The effect of chlorite rims on reservoir quality in Chang 7 sandstone reservoirs in the Ordos Basin, China".MARINE AND PETROLEUM GEOLOGY 158(2023):16.