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Study of interfacial tension between a weakly alkaline three-component flooding system and crude oil, and evaluation of oil displacement efficiency

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Chemistry and Technology of Fuels and Oils Aims and scope

We have measured the interfacial tension between Daqing crude oil and a ternary system containing a weak base, S6 surfactant, and a polymer. We have studied the effect of the concentrations of the weak base Na2CO3, S6, and the polymer on the interfacial tension. The results show that a weakly alkaline three-component system reduces interfacial tension better than a nonalkaline two-component system. As the polymer concentration increases, the time required to achieve ultra-low interfacial tension increases. Sodium carbonate not only reduces interfacial tension but also acts as a sacrificial agent to reduce surfactant consumption.

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Authors and Affiliations

  1. Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang, 065007, China

    Cui Maolei

  2. Graduate University of Chinese Academy of Sciences, Beijing, 100190, China

    Cui Maolei

  3. PetroChina Research Institute of Petroleum Exploitation and Development-Langfang, Langfang, 065007, China

    Ding Yunhong

Authors
  1. Cui Maolei
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  2. Ding Yunhong
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 24 – 27, January – February, 2012.

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Maolei, C., Yunhong, D. Study of interfacial tension between a weakly alkaline three-component flooding system and crude oil, and evaluation of oil displacement efficiency. Chem Technol Fuels Oils 48, 33–38 (2012). https://doi.org/10.1007/s10553-012-0333-4

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