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  2. 地质与地球物理研究所
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  4. 中国科学院页岩气与地质工程重点实验室
An investigation of the evolution of the internal structures and failure modes of Longmaxi shale using novel X-ray microscopy

文献类型：期刊论文

作者Duan, Y. T.1,2; Li, X.1,2,3; Ranjith, P. G.4; Wu, Y. F.2,3
刊名JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
出版日期2020
卷号184页码:9
关键词X-ray microscopy Longmaxi shale Void evolution Crack connectivity Meso-scale mineral Intergranular fracture
ISSN号0920-4105
DOI10.1016/j.petrol.2019.106479
英文摘要An accurate description of the evolution of the internal structure of shale during loading and fracturing is important to understand the failure mechanisms that are related to shale-gas migration. The aim of this work was to investigate and characterize the void evolution and failure of Longmaxi shale quantitatively under uniaxial tests, and analyze the relationship between the distribution of the meso-scale (voxel-scale) minerals and the failure mode. Novel X-ray microscopy combined with an in-situ microtest device was used and three groups of shale specimens were tested under uniaxial conditions with different scanning stresses. Some three-dimensional stereograms of different loading forces and an entire force-displacement curve were obtained for each in-situ test. Based on the results, an evolution of the void distribution was characterized and divided into four stages: weakened damage, linear, damage evolution and stable development, and accelerated damage development. The degree of development of the final cracks was distinguished by the crack volume, equivalent aperture width and connectivity rate. The structure evolution and failure mode of shale were described quantitatively by the void changes and the crack characteristics. Three phenomena of intergranular fracture, transgranular fracture and arrest cracks were observed at a meso-scale to explain the effect of mineral distribution on the crack pattern. These quantitative results can provide a guide for the design in shale fracturing engineering and some references for numerical analysis.
WOS关键词PARTIALLY SATURATED SAND ; CRACKING PROCESS ; CT ; LOCALIZATION ; ROCKS
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10030301] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10030304] ; National Natural Science Foundation of China[41227901] ; China Scholarship Council (CSC)
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000501599800017
出版者ELSEVIER
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/95841]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Duan, Y. T.; Li, X.
作者单位1.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Monash Univ, Dept Civil Engn, Deep Earth Energy Lab, Bldg 60, Melbourne, Vic 3800, Australia
推荐引用方式
GB/T 7714		 Duan, Y. T.,Li, X.,Ranjith, P. G.,et al. An investigation of the evolution of the internal structures and failure modes of Longmaxi shale using novel X-ray microscopy[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2020,184:9.
APA Duan, Y. T.,Li, X.,Ranjith, P. G.,&Wu, Y. F..(2020).An investigation of the evolution of the internal structures and failure modes of Longmaxi shale using novel X-ray microscopy.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,184,9.
MLA Duan, Y. T.,et al."An investigation of the evolution of the internal structures and failure modes of Longmaxi shale using novel X-ray microscopy".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 184(2020):9.

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来源：地质与地球物理研究所

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