大庆油田已大面积开展聚合物驱,对聚合物溶液进行了渗流实验和流变性实验,研究了聚合物的相对分子质量、相对分子质量分布宽度对聚合物在岩心中的滞留量、阻力因数、残余阻力因数和溶液粘度的影响,结果表明:在聚合物溶液的质量浓度及聚合物的相对分子质量分布宽度相同条件下,随着聚合物相对分子质量的增加,聚合物在岩心中的滞留量、阻力因数、残 The polymer flooding has been carried out on a large scale in Daqing Oilfield. The seepage experiment and rheological experiment of the polymer solution have been carried out. The relative molecular mass, relative molecular mass distribution width, polymer retention in the core, drag coefficient, Residual resistance factor and solution viscosity. The results show that with the increase of the relative molecular mass of the polymer, the retention of the polymer in the core under the same conditions of the polymer solution concentration and the relative molecular mass distribution width of the polymer Resistance factor, residual