摘要
为了探索一种耐吸附、低张力二元复合体系的界面特性,利用Texas-500型旋滴界面张力仪以及岩心渗流装置,进行了体系初始界面张力以及模拟地层渗流过程中动态界面张力的测定;通过静态吸附实验明确复合体系中活性剂吸附量以及吸附对界面张力影响。结果表明,新型无碱二元复合体系界面张力在活性剂质量分数低至0.05%、聚合物质量浓度高至2 500mg/L,亦可形成10-3数量级;活性剂吸附量较小,一次吸附后各界面张力依旧可以维持10-3数量级。动态渗流实验结果显示,即使考虑吸附及稀释作用,在距离模型入口端3/5处二元体系动态界面张力依旧可以维持10-3数量级。
In order to explore the binary composite system interface characteristics of adsorption resistance and low tension, Texas-500 spinning drop interracial tensiometer and core flow device were used to measure the initial interracial tension and simulate dynamic interracial tension.The effect of interracial tension and adsorption capacity was confirmed through the static adsorption experiments. The results showed that the new E-compound system interracial tension of 10^-3 orders of magnitude can also be formed when active dosage was as low as 0.050% and polymer concentration was up to 2 500 mg/L. Static adsorption proved that interracial tension 10^-3 orders of magnitude can be maintained when amount of adsorption agent was little after first adsorption. Dynamic flow experiment results showed that even considering absorption and dilution, dynamic interracial tension of the binary system can still maintain a 10 3 orders of magnitude in 0.6 PV.
出处
《石油化工高等学校学报》
CAS
2015年第4期65-68,共4页
Journal of Petrochemical Universities
基金
国家重大专项课题"油田开采后期提高采收率新技术"(2011ZX05009-004)
关键词
超低界面张力
吸附量
界面特性
有效运移距离
Ultra-low interfacial tensionl Adsorption
Interfacial Properties
Migration distance
