Effect of plastic deformation on hydraulic fracturing with extended element method

被引：20
作者：
Zeng, Qingdong [1 ,2 ]
Yao, Jun [1 ]
Shao, Jianfu [2 ]
机构：
[1] China Univ Petr East China, Res Ctr Multiphase Flow Porous Media, Qingdao, Shandong, Peoples R China
[2] Univ Lille, CNRS, FRE2016, LaMcube, F-59000 Lille, France
来源：
ACTA GEOTECHNICA | 2019年 / 14卷 / 06期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Ductile rocks; Extended finite element method (XFEM); Fracture propagation; Hydraulic fracturing; Plastic deformation; Porous materials; NUMERICAL-SIMULATION; NATURAL FRACTURES; CRACK-GROWTH; PROPAGATION; PATH; TOUGHNESS; XFEM;
D O I：
10.1007/s11440-018-0748-0
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The propagation of hydraulic fracture in elastic rocks has widely been investigated. In the paper, we shall focus on numerical modeling of hydraulic fracturing in a class of porous rocks exhibiting plastic deformation. The plastic strain of porous rocks is described by a non-associated plastic model based on Drucker-Prager criterion. The plastic deformation is coupled with fluid pressure evolution described by the lubrication theory. An extended finite element method is used for modeling the propagation of fracture. The fracture propagation criterion is based on the J-integral. The proposed numerical model is validated by comparisons with numerical and analytical results. The influence of plastic deformation on fracture propagation process is investigated.
引用
收藏
页码：2083 / 2101
页数：19
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