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Correlation study between fracability and brittleness of shale-gas reservoir

文献类型：期刊论文

作者Yang, Baicun4; Xue, Lei2,3; Duan, Yongting4; Wang, Miaomiao1
刊名GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
出版日期2021-05-01
卷号7期号:2页码:13
关键词Shale Fracability Brittleness Fractal dimension Weibull shape parameter
ISSN号2363-8419
DOI10.1007/s40948-021-00231-y
英文摘要A correlation study between the fracability and brittleness of shale gas reservoir is crucial for optimize reservoir reconstruction and enhance shale gas recovery. To investigate the relationship between fracability and brittleness of shale, a series of uniaxial compression tests of Silurian Longmaxi shale samples were carried out using a novel setup that combines X-ray micro-computed tomography with a uniaxial loading apparatus. Based on the CT images obtained from the test, fractal dimension of crack distribution that regarded as an effective index describing the fracability of shale was estimated, and the Weibull shape parameter that deemed as a reliable index to describe the brittleness of shale was calculated. The ratio of fractal dimension and Weibull shape parameter was close to a constant value of 2. To reveal the relationship between the fractal dimension and Weibull shape parameter, the quantitative relationship between the fractal dimension of the crack distribution and the Weibull shape parameter of the shale under tensile and compressive stress conditions was established by coupling the fracture mechanics and Weibull's weakest-link theory, which validated that the shale fracability was directly proportional to its brittleness. The applicable range of the quantitative relationship showed that the proportional relationship only held for a low-brittleness shale. These results are significant for the fracturing and recovery of shale-gas reservoirs.
资助项目National Natural Science Foundation of China[41977249] ; National Natural Science Foundation of China[U1704243] ; National Natural Science Foundation of China[41572311] ; National Natural Science Foundation of China[42007243] ; Fundamental Research Funds for the Central Universities[N2001028]
WOS研究方向Energy & Fuels ; Engineering ; Geology
语种英语
WOS记录号WOS:000630735500001
出版者SPRINGER HEIDELBERG
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
源URL[http://ir.iggcas.ac.cn/handle/132A11/101002]  
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Yang, Baicun; Xue, Lei
作者单位1.Changan Univ, Sch Highway, Xian 710064, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Baicun,Xue, Lei,Duan, Yongting,et al. Correlation study between fracability and brittleness of shale-gas reservoir[J]. GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,2021,7(2):13.
APA Yang, Baicun,Xue, Lei,Duan, Yongting,&Wang, Miaomiao.(2021).Correlation study between fracability and brittleness of shale-gas reservoir.GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES,7(2),13.
MLA Yang, Baicun,et al."Correlation study between fracability and brittleness of shale-gas reservoir".GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES 7.2(2021):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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