Numerical investigation of the interaction between hydraulic fractures and natural fractures in porous media based on an enriched FEM
文献类型：期刊论文
| 作者 | Zhou, Yun2,4; Yang, Diansen2,4; Zhang, Xi3; Chen, Weizhong2,4; Xia, Xiaozhou1 |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 235页码:25 |
| 关键词 | Hydraulic fracture Natural fracture Fracture interaction Porous media XFEM |
| ISSN号 | 0013-7944 |
| DOI | 10.1016/j.engfracmech.2020.107175 |
| 英文摘要 | A fully coupled enriched-FEM (XFEM) model is proposed to investigate the interaction between hydraulic fractures and natural fractures in finite 2D porous media. The weak forms of both equilibrium and continuity equations are discretized in an enriched form in the space and by the Newmark scheme in the time domain. The Newton-Raphson method is adopted to solve these discretized equations. To account for the fluid flow in the porous matrix, 2D fluid leakage from the fractures to the matrix is considered by imposing internal flux boundary conditions on the fracture surfaces. A posteriori analysis is carried out to determine the equivalent leak off coefficient of the 1D Carter's leak off law. The frictional contact of the fracture surface is modeled by the penalty method in the model. The junction ridge function is adopted to describe the weak discontinuities of the pressure field in the elements containing fracture intersection points. A crack initiation criterion based on the average tensile stress along the natural fracture is used to determine whether a hydraulic fracture can cross a natural fracture. The presented model is first validated against the analytical solutions of the KGD model and then several numerical examples are simulated to investigate the effects of the natural fracture properties, treatment parameters, matrix permeability, anisotropy stress and approaching angle on the interaction between hydraulic fractures and natural fractures. The numerical results suggest the acceptable accuracy and robustness of the presented model on modeling fracture interaction behaviors in the presence of fluid leakage into matrix. |
| 资助项目 | National Natural Science Foundation of China[51879260] ; National Natural Science Foundation of China[51879258] ; National Natural Science Foundation of China[11672099] ; National Natural Science Foundation of China[U1806226] ; CAS Interdisciplinary Innovation Team[JCTD-2018-17] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-423] ; Hubei Provincial Natural Science Foundation of China[2018CFA012] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000559761200008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24677]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Diansen |
| 作者单位 | 1.Hohai Univ, Coll Mech & Mat, Nanjing 211100, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 3.CSIRO Energy, Clayton, Vic, Australia 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Yun,Yang, Diansen,Zhang, Xi,et al. Numerical investigation of the interaction between hydraulic fractures and natural fractures in porous media based on an enriched FEM[J]. ENGINEERING FRACTURE MECHANICS,2020,235:25. |
| APA | Zhou, Yun,Yang, Diansen,Zhang, Xi,Chen, Weizhong,&Xia, Xiaozhou.(2020).Numerical investigation of the interaction between hydraulic fractures and natural fractures in porous media based on an enriched FEM.ENGINEERING FRACTURE MECHANICS,235,25. |
| MLA | Zhou, Yun,et al."Numerical investigation of the interaction between hydraulic fractures and natural fractures in porous media based on an enriched FEM".ENGINEERING FRACTURE MECHANICS 235(2020):25. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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