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本文在研究聚合物溶液流经多孔介质时的流变性基础上,确定了聚合物溶液在多孔介质的有效粘度与分流量和相饱和度之间的关系式。从而解决了聚合物吸附/滞留及非牛顿流效应的影响,建立了稳定法测定聚合物驱相对渗透率曲线的实验技术和方法。成功地测得了油/聚合物溶液体系的相渗曲线和注聚合物段塞后的油/水体系的相渗曲线,并确定了适当的相渗曲线经验方程。讨论了聚合物驱相渗曲线的特征,分析了水相中的自由聚合物分子和岩石中吸附/滞留的聚合物对相渗曲线的影响,真实地反映了聚合物驱过程中的多相渗流规律。
In this paper, based on the rheological properties of polymer solution flowing through porous media, the relationship between the effective viscosity of polymer solution in porous media and the flow rate and phase saturation is established. Thus solving the effect of polymer adsorption / retention and non-Newtonian flow and establishing the experimental technique and method for determining the relative permeability curve of polymer flooding by the stability method. The phase-permeation curve of the oil / polymer solution system and the oil-water system plug-injection curve were successfully measured, and the appropriate empirical equation of the phase-infiltration curve was determined. The characteristics of polymer flooding curves are discussed. The influence of polymer molecules adsorbed / retained in the water phase on the phase - permeation curve is analyzed. The multiphase seepage in polymer flooding is truly reflected law.