Microstructures and Pore Structures of Naturally Deformed Shales: Significance for Shale Gas Exploration in the Complex Tectonic Areas of the Margin of the Sichuan Basin, South China

doi:10.1021/acs.energyfuels.3c01539

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所

	Microstructures and Pore Structures of Naturally Deformed Shales: Significance for Shale Gas Exploration in the Complex Tectonic Areas of the Margin of the Sichuan Basin, South China
	Zeng, Lu 3; Zhu, Hongjian 2; Hao, Yuexiang 1; Shi, Erxiu 2; Lu, Yanjun 2; Qi, Yu 2
刊名	ENERGY & FUELS
	2023-07-10
卷号	37 期号:14 页码:10414-10425
ISSN号	0887-0624
DOI	10.1021/acs.energyfuels.3c01539
通讯作者	Zhu, Hongjian(haoyx_cqyyq@cnpc.com.cn) ; Hao, Yuexiang(zhj8641@163.com)
英文摘要	Tectonic deformation is a significantmodification processin themultiscale structure of shale. Understanding the naturally deformedshale gas reservoir properties plays a significant role in visualizingand quantifying gas migration pathways. Here, microstructure and porestructure investigations are performed using two types of marine shale(weakly deformed shale and strongly deformed shale) by a combinationof thin section, scanning electron microscopy (SEM) imaging, mercuryintrusion porosimetry, and low-pressure gas adsorption. The resultsshow the following: (1) The tectonic deformation has a significanteffect on the evolution of shale microstructures and pore structures.(2) The weakly deformed shales are representative of slightly deformedfine-grained shales and develop significant laminated structures withoutapparent tectonic deformation. (3) Original sedimentary fabrics andpore networks have been largely destroyed and changed in the stronglydeformed shales, and the thin section and SEM images present a varietyof deformation microstructures, such as microfold, microfault, andcataclastic flow, showing evidence for ductile, brittle, and brittle-ductiledeformation, respectively. (4) Organic pores are existent and developed,but they are not the main pore type in both weakly and strongly deformedshale. Mineral pores and fracture pores are more developed in naturallydeformed shales, and they can contribute to gas migration. (5) A combinationof low-pressure gas adsorption and mercury intrusion porosimetry suggeststhat with increasing tectonic deformation, macropore volumes and fracturepores relatively increase. These results will provide a basis forunderstanding microstructural evolution and pore structure preservationin the complex tectonic areas at the margin of the Sichuan Basin.
资助项目	National Natural Science Foundation of China[42102186] ; Science and Technology Project of the Hebei Education Department[BJK2022018] ; SINOPEC Key Laboratory of Geology and Resources in Deep Stratum[33550000-22-ZC0613-0240] ; Opening Foundation of the State Key Laboratory of Continental Dynamics, Northwest University[21LCD10]
WOS关键词	LONGMAXI SHALE ; MIGRATION PATHWAYS ; EVOLUTION ; BARNETT ; STORAGE ; DEFORMATION ; NETWORKS ; POROSITY
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:001025891400001
资助机构	National Natural Science Foundation of China ; Science and Technology Project of the Hebei Education Department ; SINOPEC Key Laboratory of Geology and Resources in Deep Stratum ; Opening Foundation of the State Key Laboratory of Continental Dynamics, Northwest University
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/57581]
专题	中国科学院水利部成都山地灾害与环境研究所
通讯作者	Zhu, Hongjian; Hao, Yuexiang
作者单位	1.CNPC Chuanqing Drilling Engn Co Ltd, Shale Gas Explorat & Dev Dept, Chengdu 610000, Peoples R China 2.Yanshan Univ, Sch Vehicle & Energy, Qinhuangdao 066000, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610000, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Lu,Zhu, Hongjian,Hao, Yuexiang,et al. Microstructures and Pore Structures of Naturally Deformed Shales: Significance for Shale Gas Exploration in the Complex Tectonic Areas of the Margin of the Sichuan Basin, South China[J]. ENERGY & FUELS,2023,37(14):10414-10425.
APA	Zeng, Lu,Zhu, Hongjian,Hao, Yuexiang,Shi, Erxiu,Lu, Yanjun,&Qi, Yu.(2023).Microstructures and Pore Structures of Naturally Deformed Shales: Significance for Shale Gas Exploration in the Complex Tectonic Areas of the Margin of the Sichuan Basin, South China.ENERGY & FUELS,37(14),10414-10425.
MLA	Zeng, Lu,et al."Microstructures and Pore Structures of Naturally Deformed Shales: Significance for Shale Gas Exploration in the Complex Tectonic Areas of the Margin of the Sichuan Basin, South China".ENERGY & FUELS 37.14(2023):10414-10425.