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    An experimental study of solid matrix weakening in water saturated Savonnières limestone

    Access Status
    Fulltext not available
    Authors
    Lebedev, Maxim
    Mikhaltsevitch, Vassili
    Date
    2013
    Type
    Conference Paper
    
    Metadata
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    Citation
    Lebedev, M. and Mikhaltsevitch, V. 2013. An experimental study of solid matrix weakening in water saturated Savonnières limestone, in EAGE (ed), Proceedings of the International Workshop on Rock Physics at NOC, Aug 4-9 2013. Southampton: EAGE.
    Source Title
    Second International Workshop on Rock Physics
    Source Conference
    Second International Workshop on Rock Physics
    Additional URLs
    http://earthdoc.eage.org/publication/publicationdetails/?publication=73428
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/19440
    Collection
    • Curtin Research Publications
    Abstract

    Petrophysical properties of carbonate reservoirs are less predictable than that of siliciclastic reservoirs. The main reason of this situation is physical and chemical interactions of carbonate rocks with pore fluids. Such interactions can significantly change elastic properties of rock matrix and/or grains making applicability of Gassmann’s fluid substitution procedure debateable. This study is an attempt to understand the mechanisms of fluid-rock interactions and the influence of these interactions on elastic parameters of carbonates. We present the results of the precise indentation tests conducted on Savonnières limestone at a microscale level under dry and water saturated conditions. Our experiments display softening of the rock matrix after water saturation. We also observed an effect of shear modulus reduction in Savonnières limestone in our ultrasonic measurements.

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