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Investigation of Processes of Interaction between Hydraulic and Natural Fractures by PFC Modeling Comparing against Laboratory Experiments and Analytical Models

文献类型：期刊论文

作者Zhou, Jian1; Zhang, Luqing1; Braun, Anika1; Han, Zhenhua1,2
刊名ENERGIES
出版日期2017-07-01
卷号10期号:7
关键词hydraulic fracturing natural fracture laboratory experiment numerical simulation particle flow code smooth joint model
ISSN号1996-1073
DOI10.3390/en10071001
文献子类Article
英文摘要Hydraulic fracturing technology is usually used to stimulate tight gas reservoirs for increasing gas production. The stimulated volume depends in part on the pre-existing natural fractures in a reservoir. The mechanisms influencing the interaction between hydraulic fractures and natural fractures have to be well understood in order to achieve a successful application of hydraulic fracturing. In this paper, hydraulic fracturing simulations were performed based on a two-dimensional Particle Flow Code with an embedded Smooth Joint Model to investigate the interactions between hydraulic fractures and natural fractures and compare these against laboratory experimental results and analytical models. Firstly, the ability of the Smooth Joint Model to mimic the natural rock joints was validated. Secondly, the interactions between generated hydraulic fractures and natural fractures were simulated. Lastly, the influence of angle of approach, in situ differential stress, and the permeability of natural fractures was studied. It is found that the model is capable of simulating the variety of interactions between hydraulic fractures and natural fractures such as Crossed type, Arrested type and Dilated type, and the modeling examples agree well with the experimental results. Under high approach angles and high differential stresses, the hydraulic fractures tend to cross pre-existing natural fractures. Under contrary conditions, a hydraulic fracture is more likely to propagate along the natural fracture and re-initiate at a weak point or the tip of the natural fracture. Moreover, these numerical results are in good agreement compared with Blanton's criterion. The variety of permeability of natural fractures has a great effect on their interactions, which should not be overlooked in hydraulic fracturing studies.
WOS关键词PARTICLE FLOW CODE ; NETWORK PROPAGATION ; FLUID INJECTION ; RESERVOIRS ; ROCK ; SHALE ; VALIDATION
WOS研究方向Energy & Fuels
语种英语
WOS记录号WOS:000406700200172
出版者MDPI AG
资助机构National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030104) ; 41572312 ; 41272353) ; National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030104) ; 41572312 ; 41272353) ; National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030104) ; 41572312 ; 41272353) ; National Natural Science Foundation of China(41502307 ; China Postdoctoral Science Foundation(2014M550838) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030104) ; 41572312 ; 41272353)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61831]  
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Zhang, Luqing
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Jian,Zhang, Luqing,Braun, Anika,et al. Investigation of Processes of Interaction between Hydraulic and Natural Fractures by PFC Modeling Comparing against Laboratory Experiments and Analytical Models[J]. ENERGIES,2017,10(7).
APA Zhou, Jian,Zhang, Luqing,Braun, Anika,&Han, Zhenhua.(2017).Investigation of Processes of Interaction between Hydraulic and Natural Fractures by PFC Modeling Comparing against Laboratory Experiments and Analytical Models.ENERGIES,10(7).
MLA Zhou, Jian,et al."Investigation of Processes of Interaction between Hydraulic and Natural Fractures by PFC Modeling Comparing against Laboratory Experiments and Analytical Models".ENERGIES 10.7(2017).

入库方式： OAI收割

来源：地质与地球物理研究所

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