聚合物/表面活性剂二元体系油水乳化过程动态表征方法研究

提出了一种新的通过测量油滴粒径变化来表征油水乳状液动态特性的方法,采用粒度分析仪测量了不同体系模拟油水乳状液油滴粒径的变化。比较了十二烷基苯磺酸钠(SDBS)、壬基酚聚氧乙烯醚(NP-10)和乙氧基化烷基硫酸钠(AES)所形成模拟乳状液的动态特性,测定了聚合物和乙醇在复合体系中对乳化过程的影响,并初步探讨了作用机理。结果表明:该方法不仅可以反映出不同体系的油水乳化速度,而且可以比较乳状液中油滴的粒径大小及其随时间变化的规律,这对于研究实际驱油过程中乳状液的形成和稳定具有重要的意义。

A characterization method of oil-water emulsion dynamic characteristics in surfactant/polymer flooding

A new characterization method of oil-water emulsion dynamic characteristics was studied by measuring the size of oil droplets, and the grain size variations of different simulated emulsions were measured. The dynamic characteristics of the oil water emulsion formed by sodium dodecylbenzene sulfonate(SDBS), nonyl phenol polyethenoxy ether(NP-10) and alkyl ethoxylation sodium sulfate(AES) were compared. The effect of polymer and ethanol in the formation of the oil water emulsion was studied, and the emulsification mechanism was preliminarily discussed. The results showed that this method could not only reflect the emulsifying speed of the oil-water emulsion, but also suggest the variation regularity of the droplets sizes in the oil-water emulsion. This study will play an important role on the study of the oil-water emulsion forming process and stabilization in practice.