Coupled Two Component Fluid Flow in Deformable Porous Media – Towards a Numerical Model for Geological Carbon Storage

Abstract:

Carbon Sequestration by CO2 storage into deep geological formations is a short to mid-term component for mitigatingclimate change while maintaining the stability of the world’s energy systems. This storage procedure will result in a seriesof coupled physical and chemical processes within the geological formation, which may critically affect its integrityas a storage medium. This work presents the development of a finite element model, which is to collaboratively aiddesign, monitoring and risk assessment. The current emphasis of the model development is on ensuring that the inducedgeomechanical behaviour is acceptable within a given reservoir-caprock system. It is a Biot-type model, whereby theinteractions of the flow of the fluids and the mechanical behaviour of the porous media are fully coupled. The governingequations are outlined and solved using numerical methods. For assessment, a simplified benchmark storage scenario ismodelled with realistic parametrisation.

• Periodical: Applied Mechanics and Materials (Volume 553)
• Pages: 393-400
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.553.393
• Online since: May 2014
• Authors: D.L. Lincoln*, Terry Bennett
• Keywords: Finite Element Method (FEM), Geological Carbon Storage, Geomechanics

References

[1] M. A. Biot, General Theory of Three-Dimensional Consolidation, Journal of Applied Physics 12 (2) (1941) 155-164.

[2] Hassanizadeh, W. G. Gray, Mechanics and thermodynamics of multiphase flow in porous media including inter- phase boundaries, Advances in Water Resources 13 (4) (1990) 169-186.

DOI: 10.1016/0309-1708(90)90040-b

[3] R. W. Lewis, B. A. Schrefler, The Finite Element Method in the Static and Dynamic Deformation and Consolidation of Porous Media, 2nd Edition, John Wiley and Sons, (1998).

[4] R. Span, W. Wagner, A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple-Point Temperature to 1100 K at Pressures up to 800 MPa, J. Phys. Chem. Ref. Data 25 (6) (1996) 1509-1596.

DOI: 10.1063/1.555991

[5] K. -J. Bathe, Finite Element Procedures, Prentice Hall, (1995).

[6] O. C. Zienkiewicz, R. L. Taylor, The Finite Element Method Fifth edition Volume 1 : The Basis, 5th Edition, Vol. 1, Butterworth-Heinemann, Oxford, (2000).

[7] O. Kolditz, et al, Numerical simulation of two-phase flow in deformable porous media: Application to carbon dioxide storage in the subsurface, Mathematics and Computers in Simulation 82 (10) (2012) 1919-(1935).

DOI: 10.1016/j.matcom.2012.06.010