Study on Optimization of Impeller Structure Parameters of ESP for Offshore Oilfield Based on ANSYS

According to the initial design parameters of electric submersible pump and the profile equation of blade, the 3D model of impeller and internal flow passage of electric submersible pump is established in Pro/E. By using the APDL parametric modeling function of ANSYS, the optimal analysis model is established. The design variables, target variables and constraints were selected by referring to the relevant books and empirical formulas, and the structure was optimized by using the ANSYS optimization tool. The parameters before and after optimization of the impeller structure under the same viscosity and the optimization parameters of the different oil viscosity coefficients were compared to obtain the influence of each design variable on the performance of the ESP and the optimum parameters under different viscosity coefficients law, which provides a reference for determining the main design parameters of the electric impeller structure of ESP in offshore oilfield.