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首页> 外文期刊>Journal of Dispersion Science and Technology >Synergistic effect of mixed anionic and cationic surfactant systems on the interfacial tension of crude oil-water and enhanced oil recovery
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Synergistic effect of mixed anionic and cationic surfactant systems on the interfacial tension of crude oil-water and enhanced oil recovery

机译：混合阴离子和阳离子表面活性剂系统对原油 - 水界面张力的协同作用，增强储存

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摘要

Surfactant based enhanced oil recovery (EOR) is an interesting area of research for several petroleum researchers. In the present work, individual and mixed systems of anionic and cationic surfactants consisting of sodium dodecyl sulphate (SDS) and cetyltrimethylammonium bromide (CTAB) in different molar ratios were tested for their synergistic effect on the crude oil-water interfacial tension (IFT) and enhanced oil recovery performance. The combination of these two surfactant systems showed a higher surface activity as compared to individual surfactants. The effect of mixed surfactant systems on the IFT and critical micellar concentration (CMC) is strongly depends on molar ratios of the two surfactant. Much lower CMC values were observed in case of mixed surfactant systems prepared at different molar ratios as compared to individual surfactant systems. The lowest CMC value was found when the molar concentration of SDS was higher than the CTAB. When the individual and mixed surfacant systems were tested for EOR performance through flooding experiments, higher ultimate oil recovery was obtained from mixed surfactant flooding compared to individual surfactants. Combination of SDS and CTAB or probably other anionic-cationic surfactants show synergism with substantial ability to reduce crude oil water IFT and can be a promising EOR method.
机译：基于表面活性剂的增强型石油回收（EOR）是几家石油研究人员的一个有趣的研究领域。在本作的工作中，测试由十二烷基硫酸钠（SDS）和甲酰基三甲基溴化铵（CTAB）组成的阴离子和阳离子表面活性剂的单独和混合系统，以对原油 - 水界面张力（IFT）的协同作用进行协同作用。增强的储油性能。与个体表面活性剂相比，这两个表面活性剂系统的组合显示出更高的表面活性。混合表面活性剂系统对IFT和临界胶束浓度（CMC）的影响强烈取决于两个表面活性剂的摩尔比。在与单个表面活性剂体系相比，在不同摩尔比以不同摩尔比制备的混合表面活性剂体系的情况下观察到了大量的CMC值。当SDS的摩尔浓度高于CTAB时，发现最低CMC值。当通过洪水实验测试个体和混合的表面活性体系的EOR性能时，与单个表面活性剂相比，从混合表面活性剂泛滥获得更高的最终的油回收。 SDS和CTAB的组合或可能其他阴离子阳离子表面活性剂显示出具有重大减少原油水IFT的实质性能力的协同作用，并且可以是一个有前途的EOR方法。

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