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Numerical studies of interactions between hydraulic and natural fractures by Smooth Joint Model

文献类型：期刊论文

作者Zhou, Jian1; Zhang, Luqing1; Pan, Zhejun2; Han, Zhenhua1,3
刊名JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
出版日期2017-10-01
卷号46页码:592-602
关键词Hydraulic Fracturing Pre-existing Natural Fracture Numerical Simulation Particle Flow Method Smooth Joint Model
ISSN号1875-5100
DOI10.1016/j.jngse.2017.07.030
文献子类Article
英文摘要The hydraulic fracturing technology is a key for enhancing the permeability of reservoirs during the production of natural gas. Significant progress has been made in hydraulic fracturing theory and practices, however, precise prediction of the fracture patterns in naturally fracture reservoirs still requires further study. The mechanisms influencing the interaction between hydraulic fracture (HF) and natural fracture (NF) should be well understood to achieve a wider application of hydraulic fracturing. In this paper, it is the first time to simulate the details of the interactions between hydraulic fractures (HFs) and natural fractures (NFs) using two-dimensional particle flow code (PFC2D) with embedded Smooth Joint Model (SJM). Firstly, the ability of SJM to emulate the natural rock joint was validated, and the fluid mechanically coupled mechanism was introduced. Secondly, the interactions between a driven HF and a pre-existing NF Were simulated considering fracturing fluid injection in a borehole. Lastly, the influence of approach angles and in-situ differential stress were studied. It is found that the model is capable of simulating the variety of interactions between HFs and NFs such as direct crossing, crossing with an offset and HFs arrested by NFs. Under high approach angles and high differential stresses, the HF tend to cross pre-existing NFs; on the contrary, a HF is more favorable to propagate along the NF and re-initiate at the weak point or the tip of NF. Moreover, our numerical results agree well with the analytical results based on the modified Renshaw and Pollards' criterion. Therefore, this numerical method may become a useful and powerful tool for optimizing fracture design in naturally fractured shale gas reservoirs. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词BONDED-PARTICLE MODEL ; FLUID INJECTION ; PROPAGATION ; ROCK ; RESERVOIRS ; BRITTLE ; NETWORK ; SHALE
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000413607200046
出版者ELSEVIER SCI LTD
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/132A11/62474]  
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.CSIRO Energy, Private Bag 10, Clayton, Vic 3169, Australia
3.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,Pan, Zhejun,et al. Numerical studies of interactions between hydraulic and natural fractures by Smooth Joint Model[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2017,46:592-602.
APA Zhou, Jian,Zhang, Luqing,Pan, Zhejun,&Han, Zhenhua.(2017).Numerical studies of interactions between hydraulic and natural fractures by Smooth Joint Model.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,46,592-602.
MLA Zhou, Jian,et al."Numerical studies of interactions between hydraulic and natural fractures by Smooth Joint Model".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 46(2017):592-602.

入库方式： OAI收割

来源：地质与地球物理研究所

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