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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、残余阻力因数明显增加 ,聚合物溶液粘度明显增大 ;聚合物的相对分子质量分布越宽 ,聚合物在岩心中的滞留量、阻力因数和残余阻力因数也越大 ;而聚合物溶液的粘度较低 ,相对分子质量分布较窄的聚合物溶液的粘度却较高 .
The effects of polymer relative molecular mass, relative molecular mass distribution width on polymer retention in core, resistance factor, residual resistance factor and solution viscosity were investigated by means of seepage test and rheological test of polymer solution. The results show that the retention of polymer in the core, the resistance factor and the residual resistance factor increase obviously with the increase of the relative molecular mass of the polymer under the same conditions of the mass concentration of the polymer solution and the relative molecular mass distribution width of the polymer. The viscosity of the polymer solution increases obviously; the wider the relative molecular mass distribution of the polymer, the larger the retention of the polymer in the core, the resistance factor and the residual resistance factor; while the viscosity of the polymer solution is relatively low, the relative molecular mass distribution Narrower polymer solutions have higher viscosities.