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在用稳定法测定三元复合驱油体系与油的相渗曲线时,用聚合物分子滞留条件下的碱、表面活性剂体系(AS)与油的相渗曲线来代替ASP驱油过程中的相渗曲线。研究了聚合物分子在孔隙介质中的滞留程度、体系的界面张力对相渗曲线的影响,将聚合物的作用归结为对不可动水相饱和度、油水相的相渗曲线高低的影响;将碱和表面活性剂的作用归结为通过降低界面张力来影响残余油饱和度及水相相渗曲线的高低,得出了聚合物的滞留程度与不可动水相饱和度、油水相端点相对渗透率值之间的关系曲线和界面张力与残余油饱和度、界面张力与水相端点相对渗透率之间的关系曲线。
In the determination of the phase transition curve between the ASP flooding system and the oil by the stability method, the phase transition curve between the alkali and the surfactant system (AS) and the oil is used instead of the ASP flooding curve Phase infiltration curve. The influence of the retention time of polymer molecules in porous media and the interfacial tension of the polymer on the phase-infiltration curve were studied. The effect of polymer was attributed to the influence of the saturation of immiscible water phase and the phase-permeation curve of oil-water phase. The effect of alkali and surfactant can be attributed to the effects of interfacial tension on the residual oil saturation and the phase transition curve of the aqueous phase. The relationship between the retention of polymer and the saturation of immobile water phase, the relative permeability of oil-water phase end-point Relationship between the values and interfacial tension and residual oil saturation, interfacial tension and relative permeability of the water phase curve.