Research on Influential Factors to Viscoelasticity of Polymer Solution

Based on theoretical and dynamic shearing tests, the correlation of viscoelasticity of polymer solution under influential factors of different molecular weight, concentration, salinity, temperature is analyzed with respect to molecular structure of polymer and kinetic molecular theory. The results are: The storage modulus and loss modulus of dynamic curve will increase with the increase of molecular weight, the increase of concentration, and the decrease of salinity of polymer solution; With the increase of frequency, the viscoelaticity will increase and then decrease, and slowly declines with the increase of temperature; When the viscosity of polymer solution is very high, the elasticity will be much higher than viscosity. High elasticity polymer solution can improve oil displacement efficiency.