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- W2940961316 abstract "CO2 foam can be used for mobility control and blocking gas breakthrough channels during CO2 injection for enhanced oil recovery, and specially designed and formulated foam agents are needed to enhance the stability of the foams especially under reservoir conditions. In this study, the performance of CO2 foams with various surfactants has been investigated, including amide based surfactants (e.g. coconut monoethanol amide (CMEA), lauryl diethanol amide (LDEA)), amine based surfactants (cocoacyl propyl dimethylamine (UC11AMPM)), sodium dodecyl sulfate (SDS) and its mixtures with the amides and amines. A visualized high pressure and high temperature foam meter and a sand-pack flooding setup were used to assess the foam's performance, along with the surface tension measurement of the surfactant solutions in the presence of CO2. The influence of temperature, the surface tension of the aqueous solution, and SDS on CO2 foam performance of amide and amine based surfactant were investigated. The experimental results indicate that the amide or amine based surfactant alone all show poor foam performance, while their CO2 foam stability and their mobility control capability can be greatly enhanced at high temperature up to 100 °C with the salinity of 50000 mg/L. After adding SDS to CMEA, LDEA, or UC11AMPM, an excellent synergistic effect can be formed among the molecules, which can reduce the surface tensions of individual surfactant solution and enhance the stability of CO2 foams." @default.
- W2940961316 created "2019-05-03" @default.
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- W2940961316 date "2019-08-01" @default.
- W2940961316 modified "2023-10-17" @default.
- W2940961316 title "Enhanced CO2 foam based on amide and amine surfactants and synergistically coupled with sodium dodecyl sulfate at high temperature and high pressure" @default.
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- W2940961316 doi "https://doi.org/10.1016/j.petrol.2019.04.070" @default.
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