A hydro-mechanical-damage fully coupled cohesive phase field model for complicated fracking simulations in poroelastic media
文献类型：期刊论文
| 作者 | Li, Hui1; Lei, Hongwu2; Yang, Zhenjun1; Wu, Jianying3; Zhang, Xiaoxian1,4; Li, Shouding5 |
| 刊名 | COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 399期号:-页码:- |
| ISSN号 | 0045-7825 |
| 关键词 | Hydraulic fracturing Fluid-solid coupling Phase field Cohesive zone model Wellbore |
| 英文摘要 | A hydro-mechanical-damage fully coupled numerical method is developed for simulations of complicated quasi-brittle fracking in poroelastic media. A unified fluid continuity equation with crack-width dependent permeability, based on the Biot's poroelastic theory, is used for simultaneous modeling of fluid flow in both fractures and porous media. The fluid pressure is coupled into the governing equations of the phase-field regularized cohesive zone model, which can automatically predict quasi-brittle multi-crack initiation, nucleation, and propagation without remeshing, crack tracking, or auxiliary fields as needed by other methods. An alternate minimization Newton-Raphson iterative algorithm is implemented within the finite element framework to solve the above three-fields coupled problem with nodal degrees of freedom of displacements, fluid pressures, and damages. The method is first validated by three problems with analytical solutions, a problem with experimental results, and a two-crack merging problem with numerical results in published literature, in terms of time evolutions of injected fluid pressures, crack widths and lengths, and final crack paths. Horizontal wellbore fracking problems with parallel hydraulic cracks and random natural fractures are then simulated, with the effects of spacing, number, and angle of perforations investigated in detail. It is found that the developed method is capable of modeling complex multi-crack fracking in both homogeneous media and heterogeneous media with natural fractures, and is thus promising for fracking design optimization of practical exploitation of shale gas and oil. (c) 2022 Elsevier B.V. All rights reserved. |
| 学科主题 | Engineering ; Mathematics ; Mechanics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000855047300001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35513]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Hubei Provincial Key Lab of Geotechnical and Structural Safety, School of Civil Engineering, Wuhan University, Wuhan, 430027, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China 3.State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510641, China 4.Department of Sustainable Agricultural Sciences, Rothamsted Research, Harpenden, AL5 2JQ, UK 5.Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China 6.Rothamsted Research; 7.Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS |
| 推荐引用方式 GB/T 7714 | Li, Hui,Lei, Hongwu,Yang, Zhenjun,et al. A hydro-mechanical-damage fully coupled cohesive phase field model for complicated fracking simulations in poroelastic media[J]. COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,2022,399(-):-. |
| APA | Li, Hui,Lei, Hongwu,Yang, Zhenjun,Wu, Jianying,Zhang, Xiaoxian,&Li, Shouding.(2022).A hydro-mechanical-damage fully coupled cohesive phase field model for complicated fracking simulations in poroelastic media.COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING,399(-),-. |
| MLA | Li, Hui,et al."A hydro-mechanical-damage fully coupled cohesive phase field model for complicated fracking simulations in poroelastic media".COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING 399.-(2022):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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