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    Carbon dioxide/brine wettability of porous sandstone versus solid quartz: An experimental and theoretical investigation

    265372.pdf (1.438Mb)
    Access Status
    Open access
    Authors
    Alnili, F.
    Al-Yaseri, A.
    Roshan, H.
    Rahman, T.
    Verall, M.
    Lebedev, Maxim
    Sarmadivaleh, Mohammad
    Iglauer, Stefan
    Barifcani, Ahmed
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Alnili, F. and Al-Yaseri, A. and Roshan, H. and Rahman, T. and Verall, M. and Lebedev, M. and Sarmadivaleh, M. et al. 2018. Carbon dioxide/brine wettability of porous sandstone versus solid quartz: An experimental and theoretical investigation. Journal of Colloid and Interface Science. 524: pp. 188-194.
    Source Title
    Journal of Colloid and Interface Science
    DOI
    10.1016/j.jcis.2018.04.029
    ISSN
    0021-9797
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/67909
    Collection
    • Curtin Research Publications
    Abstract

    Hypothesis: Wettability plays an important role in underground geological storage of carbon dioxide because the fluid flow and distribution mechanism within porous media is controlled by this phenomenon. CO 2 pressure, temperature, brine composition, and mineral type have significant effects on wettability. Despite past research on this subject, the factors that control the wettability variation for CO 2 /water/minerals, particularly the effects of pores in the porous substrate on the contact angle at different pressures, temperatures, and salinities, as well as the physical processes involved are not fully understood. Experiments: We measured the contact angle of deionised water and brine/CO 2 /porous sandstone samples at different pressures, temperatures, and salinities. Then, we compared the results with those of pure quartz. Finally, we developed a physical model to explain the observed phenomena. Findings: The measured contact angle of sandstone was systematically greater than that of pure quartz because of the pores present in sandstone. Moreover, the effect of pressure and temperature on the contact angle of sandstone was similar to that of pure quartz. The results showed that the contact angle increases with increase in temperature and pressure and decreases with increase in salinity.

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