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论述了国内外化学驱油剂色谱分离的研究现状 ,提出了三元复合体系色谱分离的研究方法。在天然油砂充填的填砂管模型中进行了三元复合体系的流动实验 ,研究了渗透率对三元复合体系色谱分离的影响。三元复合体系在天然油砂充填的多孔介质中流动时化学剂间发生色谱分离现象 ,渗透率越低 ,色谱分离程度越明显。用天然岩心研究了渗透率对三元复合体系中表面活性剂滞留量和驱油效果的影响。当三元体系注入量为 0 .6PV时 ,多孔介质的渗透率越低 ,则表面活性剂在岩心中的滞留量越大。三元复合驱在中渗透率岩心中提高原油采收率的幅度最大。
The research status of chromatographic separation of chemical displacing agents at home and abroad is discussed. A research method of chromatographic separation of ternary complex system is proposed. The flow experiment of ternary composite system was carried out in the sand filling tube model filled with natural oil sands, and the influence of permeability on the chromatographic separation of the ternary complex system was studied. When the ternary complex system flows in porous media filled with natural oil sands, chromatographic separation occurs between the chemical agents. The lower the permeability, the more obvious the chromatographic separation occurs. The effect of permeability on surfactant retention and flooding performance in ternary complex system was studied with natural cores. When the ternary system is injected at 0.6 PV, the lower the permeability of the porous medium, the greater the retention of surfactant in the core. ASP flooding increases the recovery rate of crude oil in medium permeability core to the largest extent.