A fully coupled fracture equivalent continuum-dual porosity model for hydro-mechanical process in fractured shale gas reservoirs

被引：39

作者：

Liu, Jia ^{[1
,3
]}

Wang, J. G. ^{[1
,2
]}

Gao, Feng ^{[1
,2
]}

Leung, Chun Fai ^{[3
]}

Ma, Zhanguo ^{[2
]}

机构：

[1] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China

[2] China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China

[3] Natl Univ Singapore, Ctr Offshore Res & Engn, E1A-07-03,1 Engn Dr 2, Singapore 117576, Singapore

来源：

COMPUTERS AND GEOTECHNICS | 2019年 / 106卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Discrete fracture; Fracture tensor; Cell-level discontinuity; Stress sensitivity; Finite element method; DIRECT SHEAR BEHAVIORS; FLUID-FLOW ANALYSIS; STRESS; DEFORMATION; IMPACT; TRANSPORT; CONDUCTIVITY; PERMEABILITY; GEOMECHANICS; PERFORMANCE;

D O I：

10.1016/j.compgeo.2018.10.017

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A fully coupled fracture equivalent continuum-dual porosity model is proposed to investigate hydro-mechanical coupling phenomena in fractured porous media. An improved fracture tensor is then developed to transform the local discontinuities at cell level to the anisotropic continuum at macro-scale. This model is incorporated into a set of nonlinear partial differential equations and numerically solved by multi-time-step finite element algorithm. The approach is then applied to a field-scale simulation of shale gas reservoir. Results indicate that the proposed method can be applied to insights into the field-scale hydro-mechanical coupling with high-density fractures in any arbitrary orientation within manageable computational cost.

引用

页码：143 / 160

页数：18

共 55 条

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[Anonymous], 2010, SPE UNC GAS C PITTSB

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