CO2 geo-storage capacity enhancement via nanofluid priming

Sarmad Al-Anssari, Muhammad Arif, Shaobin Wang, Ahmed Barifcani, Maxim Lebedev, Stefan Iglauer

    Research output: Contribution to journalArticlepeer-review

    42 Scopus citations


    CO2 geo-storage efficiency is strongly influenced by the wettability of the CO2-brine-mineral system. With decreasing water-wetness, both, structural and residual trapping capacities are substantially reduced. This constitutes a serious limitation for CO2 storage particularly in oil-wet formations (which are CO2-wet). To overcome this, we treated CO2-wet calcite surfaces with nanofluids (nanoparticles dispersed in base fluid) and found that the systems turned strongly water-wet state, indicating a significant wettability alteration and thus a drastic improvement in storage potential. We thus conclude that CO2 storage capacity can be significantly enhanced by nanofluid priming.

    Original languageBritish English
    Pages (from-to)20-25
    Number of pages6
    JournalInternational Journal of Greenhouse Gas Control
    StatePublished - 2017


    • Carbon capture and storage
    • Contact angle
    • Silica nanoparticles


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