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    Wettability alteration of oil-wet limestone using surfactant-nanoparticle formulation

    253502.pdf (679.8Kb)
    Access Status
    Open access
    Authors
    Nwidee, L.
    Lebedev, Maxim
    Barifcani, Ahmed
    Sarmadivaleh, Mohammad
    Iglauer, Stefan
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Nwidee, L. and Lebedev, M. and Barifcani, A. and Sarmadivaleh, M. and Iglauer, S. 2017. Wettability alteration of oil-wet limestone using surfactant-nanoparticle formulation. Journal of Colloid and Interface Science. 504: pp. 334-345.
    Source Title
    Journal of Colloid and Interface Science
    DOI
    10.1016/j.jcis.2017.04.078
    ISSN
    0021-9797
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/54738
    Collection
    • Curtin Research Publications
    Abstract

    Wettability remains a prime factor that controls fluid displacement at pore-scale with substantial impact on multi-phase flow in the subsurface. As the rock surface becomes hydrophobic, any oleic phase present is tightly stored in the rock matrix and produced (hydrocarbon recovery) or cleaned up (soil-decontamination) by standard waterflooding methods. Although surface active agents such as surfactants have been used for several decades for changing the wetting states of such rocks, an aspect that has been barely premeditated is the simultaneous blends of surfactants and nanoparticles. This study thus, systematically reports the behaviour of surfactants augmented nanoparticles on wettability alteration. Contact angle, spontaneous imbibition, and mechanistic approaches were adopted to assess the technical feasibility of the newly formulated wetting agents, tested over wide-ranging conditions to ascertain efficient wetting propensities. The contact angle measurement is in good agreement with the morphological and topographical studies and spontaneous imbibition. The wetting trends for the formulated systems indicate advancing and receding water contact angle decreased with increase in nanoparticle concentration and temperature, and the spontaneous water imbibition test also showed faster water-imbibing tendencies for nanoparticle-surfactant exposed cores. Thus, the new formulated nanoparticle-surfactant systems were considered suitable for enhancing oil recovery and soil-decontamination, particularly in fractured hydrophobic reservoirs.

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