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建立了预计聚合物一维驱油的简单模拟模型。模型假定油和聚合物两相之间互不混相。由于置换流体为非牛顿的可修正Buckley-Leverett公式，并推导出一个计算分相流动曲线的新的近似方法。用Ellis型模型和粘弹性模型来模拟聚合物溶液的流变特性。为验证该模型，对直径2.8cm、长47cm充填70/100目玻璃有孔小珠的松散岩芯进行了两次一维驱油实验。岩芯的孔隙度约为37％，渗透率约为25μm2.采用了两种粘度为25和200ppm聚丙烯酰胺溶液。在每次实验中，控制初始含水饱和度和每次开始驱油时几乎一样。对比了聚合物驱油的计算性能和实验数据。Ellis模型比实验数据预计出较早的聚合溶液突破和较低的原油采收率。另外，粘弹性模型很好地预计出了实验的分相流动曲线，原油采收率性能和突破时间。本文认为，聚合物溶液的粘弹性效应在提高原油采收率方面起重要作用。
A simple simulation model to predict the one-dimensional polymer flooding was established. The model assumes that the oil and polymer phases are not miscible with each other. Since the displacement fluid is non-Newton’s, the Buckley-Leverett equation can be modified and a new approximation method for calculating the fractional flow curve is derived. Ellis model and viscoelastic model were used to simulate the rheological properties of the polymer solution. To validate this model, one-dimensional flooding experiments were performed on loose cores filled with 70/100 mesh glass beads with a diameter of 2.8 cm and a length of 47 cm. The porosity of the core is about 37% and the permeability is about 25 μm 2. Two polyacrylamide solutions with viscosities of 25 and 200 ppm were used. In each experiment, controlling the initial water saturation was almost the same each time the oil displacement started. The computational performance and experimental data of polymer flooding were compared. The Ellis model predicts an earlier breakthrough of the polymerization solution and lower crude oil recovery than the experimental data. In addition, the viscoelastic model predicts well the experimental phase-separation flow curve, crude oil recovery performance and breakthrough time. This paper argues that the viscoelasticity of polymer solutions plays an important role in improving oil recovery.