Fully coupled simulation of fluid injection into geomaterials with focus on nonlinear near-well behavior

Matthias Preisig, Jean-Herve Prevost

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

An important part of our global wealth depends on the extraction of fluids from porous media. More recently, sequestration of carbon dioxide (rmCO 2) into deep geological layers as a possible measure to mitigate climate change has increased interest in fluid injection into porous media. Sophisticated numerical models play an important role in managing the uncertainties related to the subsurface, and finite element methods are the most versatile tool allowing the coupling of fluid flow, geomechanics and other physical processes. This paper gives insight into two important aspects of fluid injection/extraction in porous media: the correct modeling of the bore hole through specification of initial stresses, which together with a fully coupled strategy allows simulation of nonlinear poromechanics, and the imposition of appropriate boundary conditions that allow the controlled injection/extraction of a total specified amount of fluid in an anisotropic porous medium, without exceeding a safe operating pressure.

Original languageEnglish (US)
Pages (from-to)1023-1040
Number of pages18
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Volume36
Issue number8
DOIs
StatePublished - Jun 10 2012

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Materials Science(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials

Keywords

  • Anisotropic permeability
  • Finite elements
  • Fluid injection/extraction
  • Poromechanics
  • Wellbore integrity

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