关键词: 游梁式抽油机, 电机, 抽油杆, 仿真, 数学模型

Abstract: A mathematical simulation model for the beam pumping well system was presented,including the mechanical model and the kinematic model of rod string,fluid column and of beam pumping unit as well as the motor behavior model.The dynamics of the beam pumping well system can be described in a more realistic way by solving the combined models,and hence a method for studying motion and forces of the beam pumping system driven by different types of motor is provided.The simulation results show that there exist remarkable differences between the beam pumping wells driven by high-slip motor and those by low-slip motor on the aspect of motion and forces.The motor behavior,therefore,needs to be considered in use or design.

Key words: beam pumping unit, electrical motor, rod string, simulation, mathematical model