TJ799 : Experimental Investigation of CO2 Foam Stability Using Surfactant and Nanoparticles Blends by Static and Dynamic Tests
Thesis > Central Library of Shahrood University > Mechanical Engineering > MSc > 2021
Authors:
[Author], Mohsen Nazari[Supervisor], [Supervisor]
Abstarct: Foam flooding is a proven method in the oil recovery process to recover a significant amount of oil remaining in the reservoir. However, the use of surfactant as a foaming agent in carbon dioxide foam may be able to reduce mobility, but the disadvantages of retaining the surfactant in the porous media and the instability of the foam under reservoir conditions (high salinity, high temperature and high pressure) prevent the optimal performance of this chemical in the flooding process is foaming. Because nanoparticles have properties such as high adhesion energy at the interface between the two phases, they are a good candidate for stabilizing the foam even in harsh conditions. Therefore, the aim of this study was to evaluate the stability and mobility properties of carbon dioxide foam at very low concentrations (100 Ppm) of quantum dots of zinc oxide, alpha olefin sulfonate surfactant at critical micelle concentrations (0.1 wt%) and artificial seawater with salinity 40000 Ppm as the baxse fluid. The foaming ability of the prepared solutions and their foam stability were investigated by recording the foam formation time and reducing its height inside the foam column. The results showed that the foam resulting from the synergistic of quantum dots and surfactants in the static state without the presence of oil, has improved stability by 74%. Therefore, the solution of zinc oxide quantum dots and surfactant creates a much more stable foam, which indicates the high potential of these particles in the foam flooding processes. Also, dynamic injection of foam into the micromodel increased the oil recovery rate from 37.6% of the surfactant solution alone to 97.55% in the presence of quantum dots.
Keywords:
#Foam #Surfactant #Nanoparticles #Quantum dots #Stability #Mobility #Micromodels Keeping place: Central Library of Shahrood University
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