Pore-scale modeling of chemically induced effects on two-phase flow

Yan Zaretskiy, Sebastian Geiger, Kenneth Stuart Sorbie, M. Foerster

    Research output: Contribution to conferencePaper

    Abstract

    We present a finite element - finite volume simulation method for modelling fluid flow and solute transport accompanied by chemical reactions in experimentally obtained 3D pore geometries. We solve the stationary Stokes equation on the computational domain with the FE method using the same set of nodes and the same order of basis functions for both velocity and pressure. The resulting linear system is solved by employing the algebraic multigrid library SAMG. To simulate large 3D samples we partition them into subdomains and treat each separately on a different computing node. This approach allows us to use meshes with millions of elements as input geometries without facing limitations in computer resources. We apply this method in a proof-of-concept study of a digitized Fontainebleau sandstone sample. We use the calculated velocity profile with the finite volume procedure to simulate pore-scale solute transport and diffusion. This allows us to demonstrate the correct emerging behaviour of sample’s hydrodynamic dispersivity. Finally, we model the transport of an adsorbing solute and the surface coverage dynamics is demonstrated. This information can be used to estimate the local change of a sample wettability state and the ensuing changes of the two-phase flow characteristics.
    Original languageEnglish
    Pages1-20
    Number of pages20
    Publication statusPublished - Sep 2010
    Event12th European Conference on the Mathematics of Oil Recovery 2010 - Oxford, United Kingdom
    Duration: 6 Sep 20109 Sep 2010

    Conference

    Conference12th European Conference on the Mathematics of Oil Recovery 2010
    Abbreviated titleECMOR XII
    CountryUnited Kingdom
    CityOxford
    Period6/09/109/09/10

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  • Cite this

    Zaretskiy, Y., Geiger, S., Sorbie, K. S., & Foerster, M. (2010). Pore-scale modeling of chemically induced effects on two-phase flow. 1-20. Paper presented at 12th European Conference on the Mathematics of Oil Recovery 2010, Oxford, United Kingdom.