CO2 geo-storage capacity enhancement via nanofluid priming. (August 2017)

• Record Type: Journal Article
• Authors: Al-Anssari, Sarmad; Arif, Muhammad; Wang, Shaobin; Barifcani, Ahmed; Lebedev, Maxim; Iglauer, Stefan
• Is Part Of: International journal of greenhouse gas control. Volume 63(2017)
• Page Start: 20
• Page End: 25
• Publication Date: 2017-08
• Subjects: Silica nanoparticles -- Carbon capture and storage -- Contact angle; Greenhouse gases -- Environmental aspects -- Periodicals; Air -- Purification -- Technological innovations -- Periodicals; Gaz à effet de serre -- Périodiques; Gaz à effet de serre -- Réduction -- Périodiques; Air -- Purification -- Technological innovations; Greenhouse gases -- Environmental aspects; Periodicals; 363.73874605
• DOI: 10.1016/j.ijggc.2017.04.015
• Languages: English
• ISSNs: 1750-5836

Abstract

Graphical abstract: Abstract: 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.