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中文摘要：
通过研究作为驱油表面活性剂的甜菜碱污水溶液与大庆油田第一采油厂脱水原油之间的界面张力,探讨了活性剂浓度、碱的种类和浓度、牺牲剂等因素对体系界面张力的影响,同时研究了岩心静态吸附前后和采出液界面张力值的变化情况。实验结果表明：碱对界面张力的影响较大,该体系表面活性剂中无需加碱;牺牲剂加入到此类表面活性剂的体系中能够很好地发挥作用。
英文摘要：
Through studies before, interracial tension is thought to exist between betaine sewage solution as oil flooding surfactant and dewatered crude oil of No. 1 Oil Production Branch Company. The paper explores the influences of following factors： surfactant concentration, alkaline kind and concentration, sacrifice agent and so on upon the interracial tension of above system. At the same time, the change state of interracial tension values of both before-and-after core static absorption and produced liquid is discussed. The experimental results show that the influence of alkali is rather serious upon interfacial tension, no need to add alkali in surfactant of above system ; the addition of sacrifice agent to this kind of surfaetant svstem can greatly make full use of itself.
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