Multiscale pore structure and its effect on gas transport in   organic-rich shale

doi:10.1002/2017WR020780

CORC > 北京大学 > 工学院

	Multiscale pore structure and its effect on gas transport in organic-rich shale
	Wu, Tianhao ; Li, Xiang ; Zhao, Junliang ; Zhang, Dongxiao
刊名	WATER RESOURCES RESEARCH
	2017
关键词	POROUS-MEDIA SCALE CHARACTERIZATION MATRIX PERMEABILITY RESERVOIR ROCKS LONGMAXI FLOW OIL ADSORPTION NETWORKS KEROGEN
DOI	10.1002/2017WR020780
英文摘要	A systematic investigation of multiscale pore structure in organic-rich shale by means of the combination of various imaging techniques is presented, including the state-of-the-art Helium-Ion-Microscope (HIM). The study achieves insight into the major features at each scale and suggests the affordable techniques for specific objectives from the aspects of resolution, dimension, and cost. The pores, which appear to be isolated, are connected by smaller pores resolved by higher-resolution imaging. This observation provides valuable information, from the microscopic perspective of pore structure, for understanding how gas accumulates and transports from where it is generated. A comprehensive workflow is proposed based on the characteristics acquired from the multiscale pore structure analysis to simulate the gas transport process. The simulations are completed with three levels: the microscopic mechanisms should be taken into consideration at level I; the spatial distribution features of organic matter, inorganic matter, and macropores constitute the major issue at level II; and the microfracture orientation and topological structure are dominant factors at level III. The results of apparent permeability from simulations agree well with the values acquired from experiments. By means of the workflow, the impact of various gas transport mechanisms at different scales can be investigated more individually and precisely than conventional experiments.; National Natural Science Foundation of China [U1663208, 51520105005]; National Science and Technology Major Project of China [2016ZX05037-003, 2017ZX05009005]; SCI(E); ARTICLE; 7; 5438-5450; 53
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/472303]
专题	工学院
推荐引用方式 GB/T 7714	Wu, Tianhao,Li, Xiang,Zhao, Junliang,et al. Multiscale pore structure and its effect on gas transport in organic-rich shale[J]. WATER RESOURCES RESEARCH,2017.
APA	Wu, Tianhao,Li, Xiang,Zhao, Junliang,&Zhang, Dongxiao.(2017).Multiscale pore structure and its effect on gas transport in organic-rich shale.WATER RESOURCES RESEARCH.
MLA	Wu, Tianhao,et al."Multiscale pore structure and its effect on gas transport in organic-rich shale".WATER RESOURCES RESEARCH (2017).