Extended Finite Element Method for Predicting Productivity of Multifractured Horizontal Wells

Based on the theory of the extended finite element method (XFEM), which was first proposed by Moës for dealing with the problem characterized by discontinuities, an extended finite element model for predicting productivity of multifractured horizontal well has been established. The model couples fou...

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Bibliographic Details
Published in:Mathematical problems in engineering 2014-01, Vol.2014 (2014), p.1-9
Main Authors: Jiang, Youshi, Zhao, Jin-Zhou, Li, Yong-Ming, Jia, Hu, Zhang, Liehui
Format: Article
Language:English
Subjects:
Asymmetry
Boundary conditions
Finite element analysis
Finite element method
Fluid flow
Fracture mechanics
Horizontal wells
Mass transfer
Mathematical analysis
Mathematical models
Numerical analysis
Permeability
Porous media
Porous media flow
Pressure distribution
Productivity
Radial flow
Reservoirs
Symmetry
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Summary:Based on the theory of the extended finite element method (XFEM), which was first proposed by Moës for dealing with the problem characterized by discontinuities, an extended finite element model for predicting productivity of multifractured horizontal well has been established. The model couples four main porous flow regimes, including fluid flow in the away-from-wellbore region of reservoir matrix, radial flow in the near-wellbore region of reservoir matrix, linear flow in the away-from-wellbore region of fracture, and radial flow in the near-wellbore region of fracture by considering mass transfer between fracture and matrix. The method to introduce the interior well boundary condition into the XFEM is proposed, and therefore the model can be highly adaptable to the complex and asymmetrical physical conditions. Case studies indicate that this kind of multiflow problems can be solved with high accuracy by the use of the XFEM.
ISSN:1024-123X
1563-5147
DOI:10.1155/2014/810493