[en] In this paper, we propose and verify a numerical approach to simulate fluid flow in deformable porous media without requiring the discretization to conform to the geometry of the sealed fractures (possibly intersecting). This approach is based on a fully coupled hydro-mechanical analysis and an extended finite element method (XFEM) to represent discrete fractures. Convergence tests indicate that the proposed scheme is both consistent and stable. The contributions of this paper include: (1) a new junction enrichment to describe intersecting fractures in deformable porous media; (2) the treatment of sealed fractures. We employ the resulting discretization scheme to perform numerical experiments, to illustrate that the inclination angles of the fractures and the penetration ratio of the sealed fractures are two key parameters governing the flow within the fractured porous medium.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Sheng, M.; State Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumBeijing, China
Li, G.; State Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumBeijing, China
Shah, S.; Well Construction Technology Center, University of OklahomaNorman, OK, United States
Lamb, A. R.; Intelligent Structural Integrity Management (IntelliSIMS)Houston, TX, United States
Bordas, Stéphane ; University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit
External co-authors :
yes
Title :
Enriched finite elements for branching cracks in deformable porous media
Publication date :
2015
Journal title :
Engineering Analysis with Boundary Elements
ISSN :
0955-7997
Publisher :
Elsevier Ltd
Volume :
50
Pages :
435-446
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Computational Sciences
European Projects :
FP7 - 279578 - REALTCUT - Towards real time multiscale simulation of cutting in non-linear materials with applications to surgical simulation and computer guided surgery
Funders :
51210006, NSFC, National Natural Science Foundation of China CE - Commission Européenne [BE]