Extended finite element modeling of production from a reservoir embedded with an arbitrary fracture network

Yang Xia, Yan Jin, Jay Oswald, Mian Chen, Kangping Chen

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

A numerical scheme based on the eXtended Finite Element Method (XFEM) is proposed to simulate complex fluid flow in a fractured porous reservoir. By enriching the elements fully cut by the fracture and the near-tip region, the flow mechanism including the tip flux singularity can be exactly represented in the XFEM formulation. Fluid transfer between the matrix and the fractures can be easily coupled, and XFEM also overcomes the sensitivity to the mesh used in the traditional unstructured discretizations, regardless of the complexity of the fracture network. The method is validated for a simple case by the exact analytical solution. Results are compared between XFEM and FEM. Case studies are presented to illustrate the power, efficiency, accuracy, and flexibility of the proposed method for simulating transient productive flow in reservoirs with complex fracture networks.

Original languageEnglish (US)
Pages (from-to)329-345
Number of pages17
JournalInternational Journal for Numerical Methods in Fluids
Volume86
Issue number5
DOIs
StatePublished - Feb 20 2018

Keywords

  • extended finite element methods
  • fluid flow
  • fracture networks
  • production

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

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