A core-scale reconstructing method for shale

doi:10.1038/s41598-019-39442-5

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-)

	A core-scale reconstructing method for shale
	Ji LL(姬莉莉); Lin M(林缅); Cao GH(曹高辉); Jiang WB(江文滨)
刊名	SCIENTIFIC REPORTS
	2019-03-13
卷号	9 页码:AR004364
ISSN号	2045-2322
DOI	10.1038/s41598-019-39442-5
英文摘要	Characterization of shale cores with low and anisotropic permeability is complicated, due to the presence of multiscale pore structure and thin layers, and defies conventional methods. To accurately reproduce the morphology of multiscale pore structure of the shale core, a novel core-scale reconstructing method is proposed to reconstruct 3D digital-experimental models by means of the combination of SEM, EDS images, nitrogen adsorption and pressure pulse decay experiment result. In this method, the multiscale and multicomponent reconstructing algorithm is introduced to build the representative multiscale model for each layer, which can describe the complex 3D structures of nano organic pores, micro-nano inorganic pores, micro slits and several typical minerals. Especially, to reproduce the realistic morphology for shale, the optimization algorithm based on simulated annealing algorithm uses the experimental data as constrain conditions to adjust and optimize the model for each layer. To describe the bedding characteristics of the shale core, bedding fractures are constructed by analysis of the mineral distribution in the interface of two layers, and then the representative models for different layers are integrated together to obtain the final core-scale digital-experimental model. Finally, the model is validated by computing its morphological and flow properties and comparing them with those of the actual 3D shale sample. This method provide a way for systematically and continuously describe the multiscale and anisotropic pore structure (from nm-cm) of the shale core, and will be helpful for understanding the quality of the shale reservoir.
分类号	二类/Q1
WOS关键词	POROUS-MEDIA ; 2D
WOS研究方向	Multidisciplinary Sciences
语种	英语
WOS记录号	WOS:000461018600033
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences [XDA14010304] ; National Natural Science Foundation of China [41872163, 41574129, 41690132] ; Major National Science and Technology Special Program of China [2017ZX05037-001]
其他责任者	Lin, M ; Lin, M
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78504]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.{Ji, Lili、Lin, Mian、Cao, Gaohui、Jiang, Wenbin} Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.{Lin, Mian、Cao, Gaohui} Univ Chinese Acad Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ji LL,Lin M,Cao GH,et al. A core-scale reconstructing method for shale[J]. SCIENTIFIC REPORTS,2019,9:AR004364.
APA	姬莉莉,林缅,曹高辉,&江文滨.(2019).A core-scale reconstructing method for shale.SCIENTIFIC REPORTS,9,AR004364.
MLA	姬莉莉,et al."A core-scale reconstructing method for shale".SCIENTIFIC REPORTS 9(2019):AR004364.