多孔介质中聚丙烯酰胺溶液流变性研究

Study on the rheological property of polyacrylamide solution in porous media.

研究了聚丙烯酰胺溶液在多孔介质中的流变特征 ;分析了聚丙烯酰胺溶液渗流过程中的粘弹性及其影响因素。结果表明 ,聚丙烯酰胺溶液在渗流过程中 ,浓度和渗流速度对其粘弹性影响较大。该溶液为剪切变稀的假塑性流体 ,只在井底附近出现弹性行为 。

The rheological property of polyacrylamide solution in porous media is studied. Viscoelasticity and its influencing factors in the percolation process are analyzed. The results show that concentration and percolating velocity make a greater impact on its viscoelasticity in the percolation process of the solution. This solution is the shear thinned pseudoplastic fluid that can affect bottomhole pressure gradient and the behavior of the elasticity only appears at bottomhole nearby.