降低界面张力、增强驱油剂的黏弹性、增加驱替速度，有利于提高驱替残余油膜的驱替效率。
Decreasing interfacial tension or enhancing the viscoelasticity or displacement velocity is favorable to increasing the displacement efficiency of oil film.
欲获得较高的采收率，不仅要尽量降低驱油体系与原油间的界面张力，而且要适当增加驱油体系的黏度。
For higher recovery, not only to minimize interfacial tension between displacement system and the crude oil, but also to appropriately increase the viscosity of oil displacement system.
实验结果表明在恒定温度下界面张力随压力的增加而增大。
The results show that the interface tension decreased with increasing pressure when temperature was specified.
弱碱三元复合体系界面张力随碱和表面活性剂增加而降低，随时间延长而下降。
The interfacial tension of the alkali ASP system descended with the alkali and surfactant density increasing, and decreased with time.
十八烷基甜菜碱的界面张力随着活性剂浓度和矿化度的增加先降低后升高。
The IFT of octadecyl betaine increase before decrease with the increase of the surfactant concentration and salinity.
十四烷基羧基甜菜碱和十六烷基甜菜碱的界面张力随着活性剂浓度的升高而升高，增加矿化度有利于降低油水界面张力；
The IFT for tetradecyl betaine and hexadecyl betaine increases with the increase of surfactant concentration. The increase for salinity is favor for decrease the IFT.
十四烷基羧基甜菜碱和十六烷基甜菜碱的界面张力随着活性剂浓度的升高而升高，增加矿化度有利于降低油水界面张力；
The IFT for tetradecyl betaine and hexadecyl betaine increases with the increase of surfactant concentration. The increase for salinity is favor for decrease the IFT.
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