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- W2979426350 endingPage "312" @default.
- W2979426350 startingPage "304" @default.
- W2979426350 abstract "Nanofluid treatment is a promising technique which can be used for wettability reversal of CO2-brine-mineral systems towards a further favourable less CO2-wet state in the existence of organic acids. However, literature requires more information and study with respect to organic acids and nanoparticles' effect at reservoir (high pressure and high temperature) conditions.Therefore, we have measured in this study that what influence small amounts of organic acids exposed to quartz for aging time of (7 days and 1 year) have on their wettability and how this impact can be reduced by using different concentrations of nanoparticles at reservoir conditions. Precisely, we have tested lignoceric acid (C24), stearic acid (C18), lauric acid (C12) and hexanoic acid (C6) at 10-2 Molarity, as well as, we have also used different concentrations (0.75 wt%, 0.25 wt%, 0.1 wt%, 0.05 wt%) of silica nanoparticles at realistic storage conditions.The quartz surface turned significantly hydrophobic when exposed to organic acids for longer aging time of 1 year, and significantly hydrophilic after nanofluid treatment at optimum concentration of 0.1 wt%. It was observed that most nanoparticles were mechanistically irreversibly adsorbed on the surface of quartz sample. This wettability shift thus may increase CO2 storage capacities and containment security." @default.
- W2979426350 created "2019-10-18" @default.
- W2979426350 creator A5006244690 @default.
- W2979426350 creator A5008820196 @default.
- W2979426350 creator A5047318535 @default.
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- W2979426350 creator A5060387271 @default.
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- W2979426350 creator A5072527502 @default.
- W2979426350 creator A5074112875 @default.
- W2979426350 creator A5083987021 @default.
- W2979426350 date "2020-02-01" @default.
- W2979426350 modified "2023-10-16" @default.
- W2979426350 title "Effect of nanofluid on CO2-wettability reversal of sandstone formation; implications for CO2 geo-storage" @default.
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