Abstract: As theoretical foundation of polymer flooding design, the polymer rheological behavior is systematically studied by using DVIII rotational viscometer. The result shows that polymer solution appears shear-thinning behavior and apparent viscosity is the function of shear rate, temperature and concentration of polymer, and at the same temperature, the consistency coefficient is increasing with the concentration increase, the power-law index is decreasing with the concentration increase. Through development of rheological model and introduction of support vector machine method, the prediction of the rheological behavior of polymer is conducted, showing consistent results between prediction and measurement. This provides base for polymer flooding numerical simulation, reservoir performance prediction and field engineering design.

Key words: polymer, rheological behavior, apparent viscosity, model