ABSTRACT
in this study investigates the flow behavior and physical properties of waterpolyvinyl
acetate PVAcsolution and ZnO nanoparticles filled water-PVAcsolution
toward using in the oil recovery. The physical properties of PVAc and different types
of water are tested. The river water is selected to mix with the 2, 3, 4, and 5wt
%PVAc to prepare solution1.viscosity, surfacetension,PH, and density of this solution
were tested with the PVAcconcentration then the water – 5% PVAc solution was
chosen to mix with 0.2,0.3,0.4, and 0.5 wt. % of ZnO particles to prepare solution (2).
Again viscosity, surface tension, PH, and density were rested due to the ZnO
concentration.Viscosity of both solution (1) and (2) were tested with the shear rate
increasing .The results show that the viscosity decreases with the shear rate and
temperature increasing and increases with the PVAc increasing for solution1.Also the
viscosity of solution(2)increases with the ZnO nanoparticles increasing and
decreasing with the shear rate increasing. The surface tension and PHvalue decrease
with the PVAc concentration increasing for solution1, while increase with the ZnO
nanoparticles concentration increasing for solution(2).The density keep stable for
solution(1) with the PVAc increasing, while decreases with the ZnO nanoparticles
increasing.0.5% ZnO nanoparticles filled water-5%PVAc solutionhas higher viscosity
and surface tension value, which reduce the coefficient of mobility and enhance the
oil recovery. The PH value of this solutionslightly change compared with the other
ratios and the decreasing in the density obtains some advantages in friction and
pressure loss during flow.