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    Frequency-dependent effective hydraulic conductivity in randomly layered porous medium - strong contrast approximation

    189484_62504_Frequency-dependent_Effective_Hydraulic_Conductivity.pdf (276.7Kb)
    Access Status
    Open access
    Authors
    Caspari, Eva
    Müller, T.
    Gurevich, Boris
    Date
    2012
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Caspari, E. and Müller, T.M. and Gurevich, B. 2012. Frequency-dependent effective hydraulic conductivity in randomly layered porous medium - strong contrast approximation, in Proceedings of the 74th EAGE Conference and Exhibition-Incorporating SPE EUROPEC 2012, Jun 4-7 2012. Copenhagen, Denmark: European Association of Geoscientists & Engineers (EAGE).
    Source Title
    EAGE Conference Proceedings & Exhibitors' Catalogue
    Source Conference
    74th European Association of Geoscientists and Engineers Conference and Exhibition- Incorporating SPE EUROPEC 2012
    Additional URLs
    http://www.earthdoc.org/
    http://www.earthdoc.org/publication/publicationdetails/?publication=59181
    ISBN
    978-90-73834-27-9
    URI
    http://hdl.handle.net/20.500.11937/33963
    Collection
    • Curtin Research Publications
    Abstract

    Upscaling of transport properties of heterogeneous porous rocks, such as hydraulic conductivity, is controlled not only by the spatial heterogeneity, but also by the temporal variations of the flow field. Thus effective hydraulic conductivity and permeability of a heterogeneous porous medium is frequency dependent. Existing upscaling methods for this property are often limited to small spatial variations of permeability, which is a significant limitation. In this study we apply a strong contrast expansion method, originally suggested in the context of the dynamic dielectric constant, to the problem of upscaling hydraulic conductivity in a 1D random medium. A closed-form expression for the effective hydraulic conductivity, which depends on the second order statistics, is derived. Unlike the small contrast approximations, in the low- and high-frequency limits this new expression yields harmonic and arithmetic averages of permeability, respectively, which are known to be exact low- and high-frequency limits in 1D.

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