Simulation of Sucker-Rod Oil Pumping Unit Operation for Marginal Wells

The paper proposes a model of the electromechanical control system for the sucker-rod oil pumping unit with the feedback based on the pump filling factor. The structural diagram of the system is presented and its operation algorithm is described. The control system relies on a Hamming network, which determines the level of marginal well filling by recognizing the recorded load curve and generates a control signal. The optimal operation mode for the oil pumping unit is established by setting the rotation speed of the driving motor in accordance with the flow rate of the formation. The simulation of the normal and emergency modes of the oil pumping unit was implemented based on the experimental data.