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Screening of Surfactants for Flooding at High-Mineralization Conditions: Two Production Zones of Carbonate Reservoir

Author

Listed:
  • Aleksei O. Malahov

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

  • Emil R. Saifullin

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

  • Mikhail A. Varfolomeev

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

  • Sergey A. Nazarychev

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

  • Aidar Z. Mustafin

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

  • Chengdong Yuan

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

  • Igor P. Novikov

    (Tatnefteprom JSC, RF, 423450 Almetyevsk, Russia)

  • Dmitrii A. Zharkov

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

  • Rustam N. Sagirov

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

  • Rail I. Kadyrov

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

Abstract

The selection of effective surfactants potentially can mobilize oil up to 50% of residuals in mature carbonate oilfields. Surfactants’ screening for such oilfields usually is complicated by the high salinity of water, high lipophilicity of the rock surface, and the heterogeneous structure. A consideration of features of the oilfield properties, as well as separate production zones, can increase the deep insight of surfactants’ influence and increase the effectiveness of surfactant flooding. This article is devoted to the screening of surfactants for two production zones (Bashkirian and Vereian) of the Ivinskoe carbonate oilfield with high water salinity and heterogeneity. The standard core study of both production zones revealed no significant differences in permeability and porosity. On the other hand, an X-ray study of core samples showed differences in their structure and the presence of microporosity in the Bashkirian stage. The effectiveness of four different types of surfactants and surfactant blends were evaluated for both production zones by two different oil displacement mechanisms: spontaneous imbibition and filtration experiments. Results showed the higher effect of surfactants on wettability alteration and imbibition mechanisms for the Bashkirian cores with microporosity and a higher oil displacement factor in the flooding experiments for the Vereian homogeneous cores with lower oil viscosity.

Suggested Citation

  • Aleksei O. Malahov & Emil R. Saifullin & Mikhail A. Varfolomeev & Sergey A. Nazarychev & Aidar Z. Mustafin & Chengdong Yuan & Igor P. Novikov & Dmitrii A. Zharkov & Rustam N. Sagirov & Rail I. Kadyrov, 2022. "Screening of Surfactants for Flooding at High-Mineralization Conditions: Two Production Zones of Carbonate Reservoir," Energies, MDPI, vol. 15(2), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:2:p:411-:d:719219
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    Cited by:

    1. Vladimir Valerievych Poplygin & Irina Sergeevna Poplygina & Viktor Antonovich Mordvinov, 2022. "Influence of Reservoir Properties on the Velocity of Water Movement from Injection to Production Well," Energies, MDPI, vol. 15(20), pages 1-14, October.

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