| dc.description.abstract | Rheological property study of polymer solutions plays an important role in mobility control for chemical enhanced oil recovery. This study evaluated the rheological behavior of viscoelastic polymers by various factors by a series of experiments.
Rheological properties of polymer solutions are usually effect by several factors such as polymer type, polymer concentration, salt type, salinity, temperature, shear rate and functional groups in the polymer chain. This research studied four effects: polymer concentration, temperature, salinity and salt type for copolymer and terpolymer. Viscosity measurements measured the apparent viscosity of solutions as a function of shear rates at a range of 0.1-935.3 1/s. And the oscillation tests were conducted to evaluate the viscoelastic properties of polymer solutions.
Results show that SAV 10 solutions have strong shear-thinning behavior than
SAV 333. Increasing polymer concentration causes the growth of apparent viscosity, elastic modulus, viscous modulus and relaxation time. Increasing temperature declines the viscosity, level of shear thinning behavior, G’, G”, and relaxation time. Increasing salinity indicates more significant reduction in apparent viscosity, G’, G” and relaxation time at low salinity. Salt type plays different roles on SAV 10 and SAV 333. | en |
