气候变化领域集成服务门户(CCPortal): Tightness Mechanism and Quantitative Analysis of the Pore Evolution Process of Triassic Ch-6 Tight Reservoir, Western Jiyuan Area, Ordos Basin, China

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DOI	10.1021/acsomega.1c02103
	Tightness Mechanism and Quantitative Analysis of the Pore Evolution Process of Triassic Ch-6 Tight Reservoir, Western Jiyuan Area, Ordos Basin, China
	Li, Shutong; Liu, Xianyang; Deng, Xiuqin; Hui, Xiao; Guo, Ruiliang; Chen, Junlin; Zhang, Jiaqiang
通讯作者	Guo, RL ; Zhang, JQ (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730030, Peoples R China. ; Guo, RL ; Zhang, JQ (通讯作者)，Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China. ; Zhang, JQ (通讯作者)，Univ Chinese Acad Sci, Beijing 100049, Peoples R China. ; Guo, RL (通讯作者)，Xian Shiyou Univ, Sch Earth Sci & Engn, Xian 710065, Peoples R China. ; Guo, RL (通讯作者)，Xian Shiyou Univ, Shaanxi Key Lab Petr Accumulat Geol, Xian 710065, Peoples R China.
发表日期	2021
ISSN	2470-1343
起始页码	17584
结束页码	17598
卷号	6 期号:27
英文摘要	Exploring the tightness mechanism through a quantitative analysis of the pore evolution process is the research hotspot of tight oil reservoirs. The physical characteristics of Chang 6 (Ch-6) sandstones in the western Jiyuan area have the typical features of a tight oil reservoir. Based on the reservoir physical property, lithological characteristics, diagenetic types and sequence, and burial and thermal evolution history, this study analyzes the factors leading to reservoir tightness and establishes the model of the pore evolution process. The results show that the sedimentary microfacies type controls the reservoir detrital material and further affects its physical properties. The high content of feldspar and rock fragments and the fine grain size are the material cause for the reservoir tightness. The sandstones of the main underwater distributary channel are the dominant sedimentary bodies for the development of a high-quality reservoir. In terms of diagenesis, compaction is the primary cause for reservoir tightness, and the porosity reduction by cementation is weaker than that by compaction. Meanwhile, the quantitative calculation results indicate that the porosity losses by compaction, carbonate cementation, kaolinite cementation, chlorite coatings, and siliceous cementation are 23.5, 3.1, 3.8, 3.0, and 0.8%, respectively. In addition, dissolution is significant to improve the reservoir physical property, and the increase of dissolved porosity is around 3.2%. More significantly, this study uses a detailed and systematic method for analyzing the tightness mechanism and the pore evolution process of the Ch-6 sandstones in the western Jiyuan area, Ordos Basin, China.
关键词	YANCHANG FORMATION OIL SANDSTONES COMPACTION CEMENTATION POROSITY QUARTZ EXPLORATION DIAGENESIS QUALITY IMPACT
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000674270200044
来源期刊	ACS OMEGA
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254865
作者单位	[Li, Shutong; Guo, Ruiliang; Chen, Junlin; Zhang, Jiaqiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730030, Peoples R China; [Liu, Xianyang; Deng, Xiuqin; Hui, Xiao] PetroChina Chongqing Oil Field Co, Xian 710018, Peoples R China; [Guo, Ruiliang; Chen, Junlin; Zhang, Jiaqiang] Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China; [Chen, Junlin; Zhang, Jiaqiang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Guo, Ruiliang] Xian Shiyou Univ, Sch Earth Sci & Engn, Xian 710065, Peoples R China; [Guo, Ruiliang] Xian Shiyou Univ, Shaanxi Key Lab Petr Accumulat Geol, Xian 710065, Peoples R China
推荐引用方式 GB/T 7714	Li, Shutong,Liu, Xianyang,Deng, Xiuqin,et al. Tightness Mechanism and Quantitative Analysis of the Pore Evolution Process of Triassic Ch-6 Tight Reservoir, Western Jiyuan Area, Ordos Basin, China[J]. 中国科学院西北生态环境资源研究院,2021,6(27).
APA	Li, Shutong.,Liu, Xianyang.,Deng, Xiuqin.,Hui, Xiao.,Guo, Ruiliang.,...&Zhang, Jiaqiang.(2021).Tightness Mechanism and Quantitative Analysis of the Pore Evolution Process of Triassic Ch-6 Tight Reservoir, Western Jiyuan Area, Ordos Basin, China.ACS OMEGA,6(27).
MLA	Li, Shutong,et al."Tightness Mechanism and Quantitative Analysis of the Pore Evolution Process of Triassic Ch-6 Tight Reservoir, Western Jiyuan Area, Ordos Basin, China".ACS OMEGA 6.27(2021).