Abstract—
Oil displacement by a miscible fluid in a porous medium, which is related to injection of hydrocarbonic gas into an oil reservoir, is investigated. A compositional model is used to describe flow of multicomponent mixtures through the porous medium. The thermophysical properties of the mixtures are given by the equation of state of the van der Waals type. The reservoir simulation software for compositional modeling of flow through a porous medium is developed within the framework of this model. The efficiencies of oil displacement from the porous medium by methane or water are compared using the above software. It is shown that in the initial stages of injection oil displacement by water is more efficient under a fixed volume flow rate of the injected fluid. However, in the last stages gas injection becomes more efficient for displacement of light hydrocarbon components.
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The work was supported by the Russian Science Foundation, project no. 19-71-10051.
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Translated by E.A.Pushkar
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Afanasyev, A.A., Vedeneeva, E.A. Investigation of the efficiency of gas and water injection into an oil reservoir. Fluid Dyn 55, 621–630 (2020). https://doi.org/10.1134/S0015462820050018
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DOI: https://doi.org/10.1134/S0015462820050018