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Interaction of Foam and Microemulsion Components in Low-Tension-Gas Flooding

Jing Zhao, Jun Yang*

School of Petroleum Engineering, Changzhou University, Changzhou, 213164, China

* Corresponding Author: Jun Yang. Email: email

(This article belongs to the Special Issue: Fluid Flow and Materials Strength related to the Wellbore Safety)

Fluid Dynamics & Materials Processing 2023, 19(7), 1951-1961. https://doi.org/10.32604/fdmp.2023.026115

Abstract

Low-Tension-Foam (LTF) flooding is an emerging enhanced oil recovery technique for low-permeability carbonate reservoirs. Foam capacity is closely related to the salinity environment (or, equivalently, the phase behavior of the oil/water/surfactant system). Therefore, the interactions between microemulsion and foam components are of primary importance in the LTF process. In this study, the phase behavior of an oil/water/surfactant system under equilibrium is analyzed, firstly by assuming perfect mixing. Meanwhile, the formation kinetics of microemulsion are monitored through a novel low-field NMR technique, which is able to provide quantitative assessment on the microemulsion evolution characteristics. Then, foam stability is examined in the absence and in the presence of Winsor-I and Winsor-III type microemulsions. It is revealed that foam stability depends on the oil solubilization (oil swollen micelle size). A decrease in the oil swollen micelle size and micellar structure effectiveness, in conjunction with an increasing salinity, leads to lower foam stability in the presence of a Winsor-III type microemulsion.

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APA Style
Zhao, J., Yang, J. (2023). Interaction of foam and microemulsion components in low-tension-gas flooding. Fluid Dynamics & Materials Processing, 19(7), 1951-1961. https://doi.org/10.32604/fdmp.2023.026115
Vancouver Style
Zhao J, Yang J. Interaction of foam and microemulsion components in low-tension-gas flooding. Fluid Dyn Mater Proc. 2023;19(7):1951-1961 https://doi.org/10.32604/fdmp.2023.026115
IEEE Style
J. Zhao and J. Yang, "Interaction of Foam and Microemulsion Components in Low-Tension-Gas Flooding," Fluid Dyn. Mater. Proc., vol. 19, no. 7, pp. 1951-1961. 2023. https://doi.org/10.32604/fdmp.2023.026115



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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