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首页> 美国卫生研究院文献>Molecules >Micellar Aggregation Behavior of Alkylaryl Sulfonate Surfactants for Enhanced Oil Recovery
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Micellar Aggregation Behavior of Alkylaryl Sulfonate Surfactants for Enhanced Oil Recovery

机译：烷基芳基磺酸盐表面活性剂的胶束聚集行为可提高采油率

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摘要

Alkylaryl sulfonate is a typical family of surfactants used for chemically enhanced oil recovery (EOR). While it has been widely used in surfactant–polymer flooding at Karamay Oilfield (40 °C, salinity 14,000 mg/L), its aggregation behavior in aqueous solutions and the contribution of aggregation to EOR have not been investigated so far. In this study, raw naphthenic arylsulfonate (NAS) and its purified derivatives, alkylaryl monosulfonate (AMS) and alkylaryl disulfonate (ADS), were examined under simulated temperature and salinity environment of Karamay reservoirs for their micellar aggregation behavior through measuring surface tension, micellar size, and micellar aggregation number. It was found that all three alkylaryl sulfonate surfactants could significantly lower the surface tension of their aqueous solutions. Also, it has been noted that an elevation both in temperature and salinity reduced the surface tension and critical micellar concentration. The results promote understanding of the performance of NAS and screening surfactants in EOR.
机译：烷基芳基磺酸盐是用于化学强化采油（EOR）的典型表面活性剂系列。尽管它已被广泛用于克拉玛依油田（40°C，盐度14,000 mg / L）中的表面活性剂-聚合物驱中，但迄今为止尚未研究其在水溶液中的聚集行为以及聚集对EOR的贡献。在这项研究中，在模拟的温度和盐度环境下，通过测量表面张力，胶束尺寸，研究了克拉玛依油藏的原始环烷芳基磺酸盐（NAS）及其纯化衍生物烷基芳基单磺酸盐（AMS）和烷基芳基二磺酸盐（ADS）的胶束聚集行为。和胶束聚集数。发现所有三种烷基芳基磺酸盐表面活性剂均可以显着降低其水溶液的表面张力。同样，已经注意到，温度和盐度的升高都降低了表面张力和临界胶束浓度。结果促进了对NAS性能的理解并筛选了EOR中的表面活性剂。

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