An Optimization Method for Parameter Adjustment of Pumping Well

In the process of oilfield development, due to changes in water injection adjustment, formation sand production, and formation pressure drop, the liquid production and dynamic liquid level of the oil well changes. It is necessary to adjust parameters to improve the system efficient of the pumping well. In this paper, a method of parameters optimization of the pumping well based on multiple constraints is proposed. Firstly, the law of oil well production, polish rod power and energy consumption is analyzed. Then, aiming at economic benefits, the optimization model of pumping well parameters is established, and solved to determine the optimal parameters of pumping well. The method is applied to the T oilfield, the optimized stroke frequency is applied, and good results are obtained. After adjustment, the pump efficiency increases from 49.3% to 68.0%, and the system efficiency increases from 27.1% to 29.8%. This method can optimize pumping well parameters under complex conditions; it can optimize parameters quickly and achieve continuous parameter adjustment. The method considers multiple constraints of pumping well, making the optimization feasible, and it can be used as a reference for keeping the balanced state between reservoir supply and well production, improving system efficiency and saving energy.