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Surfactant–Polymer Formulation for Chemical Flooding in Oil Reservoirs

Author

Listed:
  • Dmitriy Podoprigora

    (Department of Oil and Gas Fields Development and Operation, Empress Catherine II Saint Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

  • Mikhail Rogachev

    (Department of Oil and Gas Fields Development and Operation, Empress Catherine II Saint Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

  • Roman Byazrov

    (Department of Oil and Gas Fields Development and Operation, Empress Catherine II Saint Petersburg Mining University, 2, 21st Line, 199106 St. Petersburg, Russia)

Abstract

A significant part of oil fields has reached a late stage of development, where technologies aimed at increasing the oil recovery factor are becoming particularly relevant. One such technology is surfactant–polymer flooding. To implement this technology, it is necessary to select a chemical formulation that retains its properties under reservoir conditions and enhances the efficiency of water flooding. This work presents a laboratory evaluation of various polymer and surfactant samples to develop an effective chemical formulation. The results demonstrate that anionic surfactants based on sodium laureth sulphate and betaine significantly reduce interfacial tension at the oil–water interface of the target reservoir. Furthermore, when combined with a partially hydrolysed polymer, the sodium laureth sulphate-based surfactant increases the capillary number by 4500 times (reducing interfacial tension from 32.77 mN/m to 0.065 mN/m and increasing the viscosity of the injected agent from 0.5 mPa·s to 4.36 mPa·s). Based on core flooding studies, it can be concluded that the proposed surfactant–polymer composition increases the oil displacement factor from the core sample by 0.15–0.24, depending on the injection volume. The selected formulation can be recommended for application in water flooding at the target reservoir.

Suggested Citation

  • Dmitriy Podoprigora & Mikhail Rogachev & Roman Byazrov, 2025. "Surfactant–Polymer Formulation for Chemical Flooding in Oil Reservoirs," Energies, MDPI, vol. 18(7), pages 1-33, April.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:7:p:1814-:d:1627731
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    References listed on IDEAS

    as
    1. Inzir Raupov & Mikhail Rogachev & Julia Sytnik, 2025. "Overview of Modern Methods and Technologies for the Well Production of High- and Extra-High-Viscous Oil," Energies, MDPI, vol. 18(6), pages 1-29, March.
    2. Dmitry Tananykhin & Maxim Grigorev & Maxim Korolev & Timur Solovyev & Nikolay Mikhailov & Mark Nesterov, 2022. "Experimental Evaluation of the Multiphase Flow Effect on Sand Production Process: Prepack Sand Retention Testing Results," Energies, MDPI, vol. 15(13), pages 1-17, June.
    3. Dmitriy Podoprigora & Roman Byazrov & Julia Sytnik, 2022. "The Comprehensive Overview of Large-Volume Surfactant Slugs Injection for Enhancing Oil Recovery: Status and the Outlook," Energies, MDPI, vol. 15(21), pages 1-21, November.
    4. Inzir Raupov & Mikhail Rogachev & Julia Sytnik, 2023. "Design of a Polymer Composition for the Conformance Control in Heterogeneous Reservoirs," Energies, MDPI, vol. 16(1), pages 1-18, January.
    5. Dmitry Tananykhin & Maxim Grigorev & Elena Simonova & Maxim Korolev & Ilya Stecyuk & Linar Farrakhov, 2023. "Effect of Wire Design (Profile) on Sand Retention Parameters of Wire-Wrapped Screens for Conventional Production: Prepack Sand Retention Testing Results," Energies, MDPI, vol. 16(5), pages 1-13, March.
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