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Experimental study on the supercritical CO2 fracturing of shale considering anisotropic effects
Zhang, Yixiang1,2,3; He, Jianming1,2,3; Li, Xiao1,2,3; Lin, Chong1,2,3
2019-02-01
发表期刊JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
ISSN0920-4105
卷号173页码:932-940
摘要Hydraulic fracturing using freshwater as fracturing fluid is regularly employed in commercial shale gas or oil production. Many problems are brought by the fracturing fluid of water, such as water shortages, swelling of clay mineral, and the pollution of flow-back water. Replacement of water by supercritical CO2 (SC-CO2) in the hydraulic fracturing treatment of shale reservoir has meaningful potential for the improvement of gas production. Hydraulic fracturing experiments, under different injection rate and stress state, were carried out for studying the SC-CO2 fracturing of shale considering anisotropy effects. Anisotropy of shale has a significant impact on the mechanical behavior and fracture propagation of shale in the experiment. There shows a downward tendency for breakdown pressure with the increase of bedding plane angle in general. Higher injection rate can lead to the higher breakdown pressure, while higher deviator stress can lead to the lower breakdown pressure instead. In addition, three patterns of fracture propagation can be observed in the experiment, relative to the bedding structures of shale specimen, including propagating along, propagating across and arresting. The maximum values of fracture width during experiment in shale with different bedding plane angle ranges from 0.29 mm to 1.05 mm, while the final fracture width after the fracturing experiment is kept within the range of 0.01 mm-0.04 mm under the injection rate of 0.3 ml/s.
关键词Hydraulic fracturing Shale Supercritical CO2 Anisotropic characteristic
DOI10.1016/j.petrol.2018.10.092
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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 ; 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 ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
关键词[WOS]FLUID VISCOSITY ; CARBON-DIOXIDE ; GAS ; OIL ; WATER ; INJECTION
语种英语
资助项目National Natural Science Foundation of China[41572310] ; National Natural Science Foundation of China[41877270] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10030301] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB10030304] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14040401]
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; 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 ; 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 ; 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 ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
WOS研究方向Energy & Fuels ; Engineering
WOS类目Energy & Fuels ; Engineering, Petroleum
WOS记录号WOS:000455118800079
出版者ELSEVIER SCIENCE BV
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90200
专题页岩气与地质工程院重点实验室
通讯作者He, Jianming
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Zhang, Yixiang,He, Jianming,Li, Xiao,et al. Experimental study on the supercritical CO2 fracturing of shale considering anisotropic effects[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2019,173:932-940.
APA Zhang, Yixiang,He, Jianming,Li, Xiao,&Lin, Chong.(2019).Experimental study on the supercritical CO2 fracturing of shale considering anisotropic effects.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,173,932-940.
MLA Zhang, Yixiang,et al."Experimental study on the supercritical CO2 fracturing of shale considering anisotropic effects".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 173(2019):932-940.
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