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    CO2 wettability of caprocks: Implications for structural storage capacity and containment security

    235530_235530.pdf (2.088Mb)
    Access Status
    Open access
    Authors
    Iglauer, Stefan
    Al-Yaseri, Ahmed
    Rezaee, M. Reza
    Lebedev, Maxim
    Date
    2015
    Type
    Journal Article
    
    Metadata
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    Citation
    Iglauer, S. and Al-Yaseri, A. and Rezaee, M.R. and Lebedev, M. 2015. CO2 wettability of caprocks: Implications for structural storage capacity and containment security. Geophysical Research Letters. 42 (21): pp. 9279-9284.
    Source Title
    Geophysical Research Letters
    DOI
    10.1002/2015GL065787
    ISSN
    0094-8276
    School
    Department of Exploration Geophysics
    Remarks

    Copyright © 2015 American Geophysical Union

    URI
    http://hdl.handle.net/20.500.11937/12807
    Collection
    • Curtin Research Publications
    Abstract

    © 2015. American Geophysical Union. All Rights Reserved. Structural trapping, the most important CO2 geostorage mechanism during the first decades of a sequestration project, hinges on the traditional assumption that the caprock is strongly water wet. However, this assumption has not yet been verified; and it is indeed not generally true as we demonstrate here. Instead, caprock can be weakly water wet or intermediate wet at typical storage conditions; and water wettability decreases with increasing pressure or temperature. Consequently, a lower storage capacity can be inferred for structural trapping in such cases.

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