动态界面张力特征及影响因素研究

Study of dynamic interfacial tension characteristic and its influencing factors

采用旋转滴界面张力仪,研究了三元复合驱油体系中影响界面张力的有关因素,建立了界面反应模型,并提出了表征该驱油体系特征的浓度窗口和时间窗口等界面参数。结果表明,碱浓度影响动态界面张力的初始值、最低值以及时间窗口,最佳动态界面张力与表面活性剂组成及油相组成有重要的关系。

The influencing factors of interfacial tension in alkalisurfactantpolymer (ASP) compound drive system are investigated by spinning drop interfacial tension meter. A model is introduced to describe the dynamic interfacial tension between produced oil and ASP system. Concentration window, time window and some other interfacial parameters, which are used to characterize the system behaviors, are developed. The experiment results show that alkali concentration influenced the initial value, minimum value of dynamic interfacial tension and time window. The best dynamic interfacial tension is closely related to both the components of surfactant and oil phase.