Abstract
Nowadays, as the oil reservoirs reaching their half-life, using enhanced oil recovery methods is more necessary and more common. Simulations are the synthetic process of real systems. In this study, simulation of water and surfactant injection into a porous media containing oil (two-phase) was performed using the computational fluid dynamics method on the image of a real micro-model. Also, the selected anionic surfactant is sodium dodecyl sulfate, which is more effective in sand reservoirs. The effect of using surfactant depends on its concentration. This dependence on concentration in using injection compounds is referred to as critical micelle concentration (CMC). In this study, an injection concentration (inlet boundary) of 1000 ppm was considered as a concentration less than the CMC point (2365 ppm). This range of surfactant concentrations after 4.5 ms increased the porous media recovery factor by 2.21%. Surfactant injection results showed the wettability alteration and IFT finally increases the recovery factor in comparison with water injection. Also, in wide channels, saturation front, and narrow channels, the concentration front has a great effect on the main flowing.
Highlights
Keywords Computational fluid dynamics · Surfactant injection · Micromodel image · Phase field method · Trapped oil Understanding the phenomenon of transportation in porous media is the challenge of field development (Valvatne and Blunt 2004)
Studies of the two-phase flow continue from the early nineteenth century
The analysis of oil displacement by water and surfactant at the pore scale is presented by using existing Finite Element Methods in COMSOL Multiphysics 5.3a and its purpose is to compare oil produced from synthetic micromodel
Summary
Understanding the phenomenon of transportation in porous media is the challenge of field development (Valvatne and Blunt 2004). Keywords Computational fluid dynamics · Surfactant injection · Micromodel image · Phase field method · Trapped oil Understanding the phenomenon of transportation in porous media is the challenge of field development (Valvatne and Blunt 2004).
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