Chemistry and Technology of Fuels and Oils, Vol.56, No.1, 115-123, 2020
A Method for Estimating Equivalent Shear Rate in Flow Field of Crude Oil Production
Turbulent shear is a common flow characteristic of crude oil production. The shearing effect simulation is still a big challenge for the study of oil-water emulsion and multiphase flow. In this paper, based on the physical description of the shearing flow field and numerical simulation of the flow field characteristics, we established a method for estimating the equivalent shear rate in the well bore and well head areas, considering the change of the watercut and gas-liquid ratio parameters of the crude oil. The simulation results indicate that the watercut has little effect on the equivalent shear rate, and under the same watercut, the equivalent shear rate increases with the gas-liquid ratio. When the gas-liquid ratio increased from 240:1 to 430:1, the equivalent shear rate at the well bore and well head areas increased 84% and 76% respectively, with the watercut of 80%. The results of this study contribute to a theoretical understanding of oil-water emulsion behavior simulation of the multiphase flow characteristics.