毛管数对甜菜碱表面活性剂驱油效率的影响研究

为研究毛管数对甜菜碱表面活性剂驱油效率的影响,通过驱替实验研究了毛管数和驱油效率以及残余油饱和度之间的关系,结果表明,对于单一体系,无论是水、聚合物还是表面活性剂,其驱油效率均随着毛管数的增加而增加,残余油饱和度均随着毛管数的增加而降低。由于界面张力处于毛管力物理定义中的分母的位置,对毛管数的影响较大。界面张力越低,驱油效率越高,残余油饱和度越低,毛管数值越大。

Influence of capillary number on the betaine surfactant flooding efficiency

In order to study the effect of capillary number on the efficiency of betaine surfactant flooding,the relationship between capillary number and oil displacement efficiency and residual oil saturation was studied by displacement experiment.The experimental results show that for single system,Polymer or surfactant,the oil displacement efficiency increases with the increase of the number of hairs,and the residual oil saturation decreases with the increase of the number of hairs.As the interface tension in the physical definition of the branch of the denominator of the location of the greater impact on the capillary number.The lower the interfacial tension,the higher the oil displacement efficiency,the lower the residual oil saturation,the greater the capillary value.