Abstract
For difficult operating conditions of oil wells, one of the most effective methods of mechanized extraction is the use of progressive cavity pump with surface drive, providing a complete or partial solution to the problems of high-viscosity oil production. The volume of oil production and the cost of oil directly depend on their trouble-free operation, therefore, measures to improve the efficiency of progressive cavity pump, optimize pump operation, identify and combat the causes of premature failure of underground equipment are an urgent issue. This article analyzes the reasons for the workover of oil wells operated with progressive cavity pumps at the «Ashchysai» oilfield. In order to ensure long-term operation of the pump, the main parameters controlled during the operation of the rod column are determined, and the method of their calculation is demonstrated. Recommendations have been developed for choosing the optimal operating mode of the pump. The analysis of the efficiency of using polymer-coated tubing in wells equipped with progressive cavity pumps, increasing the intercleaning period and inter-repair period of wells.
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