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Calculation of the Optimal Injected-Gas Compositions to Increase the Oil Recovery of Reservoirs

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Abstract

The problem of optimizing water and gas injection to displace heavier oil components used in fuel production is solved. Several initial oil compositions in the reservoir and various mixtures of injected substances are considered. Numerical optimization is automated in such a way that for a fixed amount of injected pore volumes, the composition of the injected mixture is automatically changed and the most favorable composition is selected, which increases the oil-recovery factor. It is shown that for various initial oil compositions, the displacement efficiency, depending on the amount of injected pore volumes of more valuable components, qualitatively coincides. In this regard, optimization of the injection of a mixture consisting of four components is studied for one of the initial compositions. The processes occurring during injection of the optimal composition are calculated on a finer grid.

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Funding

This work was supported by the Russian Foundation for Basic Research (project no. 20-31-80009).

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Authors and Affiliations

  1. Research Institute of Mechanics, Moscow State University, 119192, Moscow, Russia

    A. A. Chernova & A. A. Afanasyev

Authors
  1. A. A. Chernova
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  2. A. A. Afanasyev
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Correspondence to A. A. Chernova.

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The authors declare that they have no conflicts of interest.

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Translated by V. Selikhanovich

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Chernova, A.A., Afanasyev, A.A. Calculation of the Optimal Injected-Gas Compositions to Increase the Oil Recovery of Reservoirs. Fluid Dyn 58, 723–730 (2023). https://doi.org/10.1134/S0015462823601031

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  • DOI: https://doi.org/10.1134/S0015462823601031

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