The article describes the marginal wells operation using electric submersible pumps ESP units. Various models of periodic operation based on telemetry are described. The study of periodic operation models enables quick choice of the operating mode of the ESP units. The following models are given as an example: that determine the need to transfer wells with a low-productivity ESP units to a periodic operation mode, periodic well operation model with an “active” leak of check valve (turbine rotation), long-term downtime well model operating in a periodic mode. The types of periodic operation and technical and economic indicators of marginal wells are presented. The features of short-term periodic well operation mode are considered. The geological and technological factors influencing the transfer of wells to the periodic operation mode are indicated. Mitigation measures for a periodic operation well model with active valve leak are described. These measures are aimed to reduce the effect of liquid draining from the tubing on the launch of an electric centrifugal pump. The geological and physical features of deposits with hard-to-recover reserves significantly affect the operation of wells with ESP units. An increase in the number of wells operated in a periodic mode requires much more time to evaluate the effectiveness of the equipment. Automation of the process of determining wells being in periodic operation together with the possibility of optimizing their work will increase oil production, reduce energy consumption and specific electricity consumption of the ESP units.
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