Experimental Investigation on the Fractures Induced by Hydraulic Fracturing Using Freshwater and Supercritical CO2 in Shale Under Uniaxial Stress

doi:10.1007/s00603-019-01820-w

CORC > 地质与地球物理研究所 > 中国科学院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

	Experimental Investigation on the Fractures Induced by Hydraulic Fracturing Using Freshwater and Supercritical CO2 in Shale Under Uniaxial Stress
	He, Jianming 1,2,3; Zhang, Yixiang 1,2,3; Li, Xiao 1,2,3; Wan, Xiaole 2,3
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2019-10-01
卷号	52 期号:10 页码:3585-3596
关键词	Shale Hydraulic fracturing Fracture propagation Micro-crack Supercritical CO2
ISSN号	0723-2632
DOI	10.1007/s00603-019-01820-w
英文摘要	The process of hydraulic fracturing makes use of fluid injection to conduct the fracturing treatment of reservoirs for the exploitation of unconventional resources. As is well known, hydraulic fracturing using water-based fracturing fluid is employed regularly in the commercial development of shale gas. The potential advantages of supercritical CO2 (SC-CO2) make it an ideal candidate of non-aqueous fluid to avoid problems associated with the hydraulic fracturing operations using water. The fracturing fluid plays such an important role in the fracturing process that it can directly affect the fracturing results of shale reservoir. Hydraulic fracturing experiments using freshwater and SC-CO2, under uniaxial stress state, were performed on the shale cores for study on the fracture propagation and micro-crack characteristics. Stereomicroscope was used for the measurement of the fracture to evaluate the fracture complexity. Scanning electron microscope (SEM) was used to reveal the micro-cracks densely developed along the two sides of the fracture surface. The investigation results show that the fractures and micro-cracks induced by hydraulic fracturing constitute the transportation pathways for shale gas, which can link the organic pores to the macro-fractures. Investigation of the micro-cracks was carried out to compare the characteristics induced by freshwater and SC-CO2. The formation mechanism of the micro-crack was analyzed based on the SEM micrographs. Small slippage occurred along the micro-crack surface due to the deviator stress, which could bring about the sustained width of micro-crack for gas transportation. Analysis of the fracture propagation and micro-crack characteristics of hydraulic fracturing shows that SC-CO2 can create the fractures and micro-cracks with more complexity.
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]
WOS关键词	GAS ; PERMEABILITY ; MORPHOLOGY ; MARCELLUS ; NETWORKS ; WOODFORD ; BARNETT
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000491582100005
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 ; 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 ; 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 ; 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 ; 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
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/93924]
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	He, Jianming; Zhang, Yixiang
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	He, Jianming,Zhang, Yixiang,Li, Xiao,et al. Experimental Investigation on the Fractures Induced by Hydraulic Fracturing Using Freshwater and Supercritical CO2 in Shale Under Uniaxial Stress[J]. ROCK MECHANICS AND ROCK ENGINEERING,2019,52(10):3585-3596.
APA	He, Jianming,Zhang, Yixiang,Li, Xiao,&Wan, Xiaole.(2019).Experimental Investigation on the Fractures Induced by Hydraulic Fracturing Using Freshwater and Supercritical CO2 in Shale Under Uniaxial Stress.ROCK MECHANICS AND ROCK ENGINEERING,52(10),3585-3596.
MLA	He, Jianming,et al."Experimental Investigation on the Fractures Induced by Hydraulic Fracturing Using Freshwater and Supercritical CO2 in Shale Under Uniaxial Stress".ROCK MECHANICS AND ROCK ENGINEERING 52.10(2019):3585-3596.