The article presents the algorithm of optimization of operating regimes of a group of oil wells, equipped by electrical submergible pumps and sucker rod pumps, with presence of limitations on the total liquid rate, oil rate and energy consumption. The optimization means the control of frequency of rotation of the submergible motor shaft, which enables torsion of pump impellers, or variation of number of swinging of pumping unit, which leads to change of speed of opening and closing of valve of a rod pump. In the case of periodic operation of the well the optimization is the variation of pumping and storage periods, which change each other during periodic turning on and off of the pump. During optimization the algorithm selects the combination of parameters of well operation in the way to achieve for wells in total the maximum oil rate at fixed liquid rate or energy consumption; minimum specific energy consumption or minimum total energy consumption at fixed oil or liquid rate. The specialty of the algorithm is the taking into account the change of the wells parameters, such as reservoir and bottomhole pressure, water cut, well head pressure and liquid volume rate in time, which enables to specify the effect of optimization for a horizon of several months accounting for interaction between wells and their influence on the ground infrastructure. Information is provided on pilot field tests of group optimization of wells at one of the fields of Bashneft-Dobycha LLC to diminish the specific energy consumption preserving the total oil rate.
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