IMECH-IR  > 非线性力学国家重点实验室
Deflected trajectory of a single fluid-driven crack under anisotropic in-situ stress
Sun FQ(孙富强); Shen WH(沈文豪); Zhao YP(赵亚溥)
Corresponding AuthorZhao, Ya-Pu(yzhao@imech.ac.cn)
Source PublicationEXTREME MECHANICS LETTERS
2019-05-01
Volume29Pages:8
ISSN2352-4316
AbstractDeflected crack trajectories are detected in hydraulic fracturing. There are numerous physical quantities impacting the deflection of a fluid-driven crack. A 2D model of the elasto-hydrodynamics system is established to predict the crack trajectory and to investigate the coupling effects of anisotropic in-situ stress, fluid viscosity, fluid injection rate and crack inclination on the crack deflection. The displacement discontinuity method (DDM) and the finite difference method (FDM) are used to solve the nonlinear problem. The concept of deflection region is defined to quantify the crack deflection. Results show that the size of the deflection region is dominated by the inclination angle. Increase of the magnitude and the difference of in-situ stresses promotes crack deflection. The combined effects of fluid viscosity and fluid injection rate are divided into three stages: significant prevention stage, significant promotion stage and insignificant prevention stage. This study provides the method for crack trajectory prediction and crack deflection control. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordHydraulic fracturing In-situ stress Deflection region Crack trajectory
DOI10.1016/j.eml.2019.100483
Indexed BySCI ; EI
Language英语
WOS IDWOS:000476656600018
WOS KeywordHYDRAULIC-FRACTURE PROPAGATION ; PERFORATION CLUSTERS ; MECHANICS ; GROWTH
WOS Research AreaEngineering ; Materials Science ; Mechanics
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
Funding ProjectNational Natural Science Foundation of China (NSFC)[11872363] ; National Natural Science Foundation of China (NSFC)[51861145314] ; Chinese Academy of Sciences (CAS) Interdisciplinary Innovation Team Project ; CAS Key Research Program of Frontier Sciences, China[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program, China[XDB22040401]
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Interdisciplinary Innovation Team Project ; CAS Key Research Program of Frontier Sciences, China ; CAS Strategic Priority Research Program, China
Classification一类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79450
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Sun FQ,Shen WH,Zhao YP. Deflected trajectory of a single fluid-driven crack under anisotropic in-situ stress[J]. EXTREME MECHANICS LETTERS,2019,29:8.
APA 孙富强,沈文豪,&赵亚溥.(2019).Deflected trajectory of a single fluid-driven crack under anisotropic in-situ stress.EXTREME MECHANICS LETTERS,29,8.
MLA 孙富强,et al."Deflected trajectory of a single fluid-driven crack under anisotropic in-situ stress".EXTREME MECHANICS LETTERS 29(2019):8.
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