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Nonylphenol Ethoxylate Surfactants Modified by Carboxyl Groups for Foam EOR at High-Salinity Conditions

Author

Listed:
  • Emil R. Saifullin

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Shinar Zhanbossynova

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Dmitrii A. Zharkov

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Roman S. Pavelyev

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Chengdong Yuan

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Mikhail A. Varfolomeev

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Ulukbek Zh. Mirzakimov

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Sergey Yu. Ivanov

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

  • Sergey A. Sitnov

    (Department of Petroleum Engineering, Kazan Federal University, 420008 Kazan, Russia)

Abstract

High mineralization of water complicates the use of foam in reservoir conditions. Anionic–nonionic surfactants are one of the best candidates for these conditions since they have both high surface activity and salt tolerance. One of the ways to obtain anionic–nonionic surfactants is to modify nonionic surfactants by an anionic group. The type of the group and its chemical structure can strongly affect the properties of the surfactant. In this work, widely-produced nonionic surfactant nonylphenol (12) ethoxylate (NP12EO) was modified by new types of carboxylic groups through the implementation of maleic (NP12EO-MA) and succinic (NP12EO-SA) anhydrides with different saturation levels. The main objectives of this work were to compare synthesized surfactants with nonionic precursor and to reveal the influence of unsaturated bonds in the carboxyl group on the properties of the foam. NaCl concentration up to 20 wt% was used to simulate high mineralization conditions, as well as to assess the effect of unsaturated bonds on foam properties. Synthesized anionic–nonionic surfactants retained surfactant solubility and long-term stability in high-salinity water, but have better foaming ability, as well as higher apparent viscosity, in porous media. The presence of an unsaturated bond in NP12EO-MA surfactant lowers foaming ability at high mineralization.

Suggested Citation

  • Emil R. Saifullin & Shinar Zhanbossynova & Dmitrii A. Zharkov & Roman S. Pavelyev & Chengdong Yuan & Mikhail A. Varfolomeev & Ulukbek Zh. Mirzakimov & Sergey Yu. Ivanov & Sergey A. Sitnov, 2021. "Nonylphenol Ethoxylate Surfactants Modified by Carboxyl Groups for Foam EOR at High-Salinity Conditions," Energies, MDPI, vol. 14(24), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:24:p:8205-:d:696620
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    References listed on IDEAS

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    1. Oyindamola Obisesan & Ramadan Ahmed & Mahmood Amani, 2021. "The Effect of Salt on Stability of Aqueous Foams," Energies, MDPI, vol. 14(2), pages 1-21, January.
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