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首页> 外文会议>2008 (10th) international conference on surfactant amp; detergent (ICSD 2008) >Studies on Synergistic Effect of Branched alkybenzenesulfonates Mixture As Oil- Displacing Agent In Lowering Water-Oil Interfacial Tension
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Studies on Synergistic Effect of Branched alkybenzenesulfonates Mixture As Oil- Displacing Agent In Lowering Water-Oil Interfacial Tension

机译：支链烷基苯磺酸盐混合物作为驱油剂降低水-油界面张力的协同效应研究

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摘要

Most of the surfactants employed in alkali/surfactant/polymer(ASP) flooding system are mixture of surfactants .However, few studies have been conducted on how mixtures of surfactants lower interfacial tension between water and oil. In this paper,synergistic effect in lowering interfacialtension between oil and branched alkybenzenesulfonates with different types of alkane preference curve is studied. The results show that(1) Ultralow interfacial tension can be observed in surfactant/ crude oil system when the nmin of surfantant mixtures is close to the equivalent alkane carbon number (EACN) value of crude oil, however, interfacial tension between water and oil can not be reduced to ultra-low when the nmin of mixtures of surfantants is far from the equivalent alkane carbon number (EACN) value of crude oil; (2)When surfactants with different types of alkane preference curve and great difference in interfacial activity was mixed, mixtures of surfantants gave the similar nmin/γmin relationship as single surfactant with high activity.
机译：碱/表面活性剂/聚合物（ASP）驱油体系中使用的大多数表面活性剂是表面活性剂的混合物。但是，关于表面活性剂混合物如何降低水和油之间的界面张力的研究很少。本文研究了不同链烷烃偏好曲线对降低油与支链烷基苯磺酸盐之间界面张力的协同作用。结果表明：（1）当表面活性剂混合物的nmin接近原油的当量烷烃碳值（EACN）时，在表面活性剂/原油体系中可以观察到超低的界面张力，但是水和油之间的界面张力可以当表面活性剂混合物的nmin值与原油的等效烷烃碳值（EACN）值相距甚远时，不应降低至极低值； （2）当混合不同类型烷烃偏好曲线和界面活性差异较大的表面活性剂时，表面活性剂混合物与具有高活性的单一表面活性剂具有相似的nmin /γmin关系。

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