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Influence of preexisting discontinuities on hydraulic fracture complexity in a naturally fractured reservoir

文献类型：期刊论文

作者Li, Yanyan1; Hu, Wei1; Wei, Siyu2; Li, Lihui3; Zhang, Zhihong1; Song, Shengyuan4
刊名ENGINEERING GEOLOGY
出版日期2022-12-20
卷号311页码:14
关键词Hydraulic fracture Naturally fractured reservoir Preexisting discontinuity Fracture complexity Discrete fracture network
ISSN号0013-7952
DOI10.1016/j.enggeo.2022.106919
英文摘要Preexisting discontinuities, such as joints and beddings, are widely distributed in unconventional reservoirs. During fluid injection, hydraulic fractures strongly interact with preexisting discontinuities, leading to great uncertainty in prediction of fracture geometry. To investigate how preexisting discontinuities affect fracture complexity, numerical simulations are carried out using the distinct element method. A discrete fracture network (DFN) model for a shale reservoir in the southeastern Ordos basin, China is built. Four cubic models, including the (1) rock matrix model, (2) bedding model, (3) joint model and (4) bedding and joint model, are extracted from the DFN model and then are used for numerical simulations. The results indicate that preexisting discon-tinuities strongly influence fracture complexity: they impose a barrier for fracture growth in most cases, and thus result in a smaller fracture area and a higher fluid pressure for fracture extension. However, the roles that joints and beddings play in fracture complexity differ. Compared with the bedding model, the joint model causes a less complex fracture geometry under the same injection condition, suggesting that the joints play a more significant role in reducing fracture complexity.
WOS关键词MODEL INTERSECTIONS ; LATTICE SIMULATION ; YANCHANG FORMATION ; ORDOS BASIN ; PROPAGATION ; ELEMENT ; PARTICLE ; SHALE ; FLOW ; NETWORKS
资助项目National Natural Science Foundation of China (NSFC) ; [42077258]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000886647600002
出版者ELSEVIER
资助机构National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/107675]  
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Li, Yanyan
作者单位1.Beijing Univ Technol, Fac Urban Construct, Beijing 100124, Peoples R China
2.China Geol Survey, Oil & Gas Survey, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
4.Jilin Univ, Coll Construct Engn, Changchun 130026, Peoples R China
推荐引用方式
GB/T 7714		 Li, Yanyan,Hu, Wei,Wei, Siyu,et al. Influence of preexisting discontinuities on hydraulic fracture complexity in a naturally fractured reservoir[J]. ENGINEERING GEOLOGY,2022,311:14.
APA Li, Yanyan,Hu, Wei,Wei, Siyu,Li, Lihui,Zhang, Zhihong,&Song, Shengyuan.(2022).Influence of preexisting discontinuities on hydraulic fracture complexity in a naturally fractured reservoir.ENGINEERING GEOLOGY,311,14.
MLA Li, Yanyan,et al."Influence of preexisting discontinuities on hydraulic fracture complexity in a naturally fractured reservoir".ENGINEERING GEOLOGY 311(2022):14.

入库方式： OAI收割

来源：地质与地球物理研究所

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