Effect of Organics and Nanoparticles on CO2-Wettability of Reservoir Rock; Implications for CO2 Geo-Storage
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In this study, we have investigated the effect of various organic acids (hexanoic, lauric, stearic, and lignoceric acid) and nanoparticles (silica and alumina) on various geo-storage formations (sandstone, carbonate, and cap-rock) by conducting contact angle measurements at various physio-thermal conditions. The result showed that geo-storage minerals became super-hydrophobic in the presence of organic acids, thus, less CO2 trapping capacity and nano-fluids have significantly turned organic-aged geo-storage minerals to intermediate-wet, thus, increased CO2 trapping capacity.
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Arif, Muhammad; Lebedev, Maxim; Barifcani, Ahmed; Iglauer, Stefan (2017)©2017. American Geophysical Union. All Rights Reserved. Shale CO 2 wettability is a key factor which determines the structural trapping capacity of a caprock. However, the influence of shale-total organic content (TOC) ...
Effect of wettability heterogeneity and reservoir temperature on CO2 storage efficiency in deep saline aquifersAl-Khdheeawi, E.; Vialle, Stephanie; Barifcani, Ahmed; Sarmadivaleh, Mohammad; Iglauer, Stefan (2018)Reservoir heterogeneity at various length scales is a well-established fact. This includes reservoir wettability - a key factor influencing CO 2 geo-storage efficiency and containment security - which changes with depth, ...
Al-Khdheeawi, E.; Vialle, Stephanie; Barifcani, Ahmed; Sarmadivaleh, Mohammad; Zhang, Y.; Iglauer, Stefan (2017)© 2017 Society of Chemical Industry and John Wiley & Sons, Ltd. It is well established that brine salinity can vary substantially in prospective CO 2 geo-storage reservoirs. However, the impact of salinity on containment ...