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The condition and the quality level of operation of the electrical complex of submersible electrical equipment of oil fields depend directly on the accident-free and reliable operation of the constituent elements of the well equipment, in particular, submersible motors. Submerged electrical equipment (SEE) for oil production including submersible electric motors (SEM) during operation are subject to the influence of a large number of external factors and impacts, their operation is associated with a variety of operating modes. To obtain information about their state, it is necessary to use the data of statistics of failure of operation. It can be argued that this method of analyzing the state of the object is the most acceptable (or even the only possible) for obtaining, describing and expressing, in quantitative terms, the SEE reliability indicators. To fully understand the current state of the SEEpark, including the SEM, the article presents the results of its statistical analysis. At the current moment, data on technological violations at oil production enterprises have been collected and analyzed with the development of recommendations for improving the reliability of SEM.


Submersible electric equipment, submersible electric motors, oil production, reliability, failure statistics, reliability indicators, time between failures, Weibul distribution, lognormal distribution, exponential distribution.

Vladimir S. Romanov

Postgraduate student, Department of Automatic Electric Power Systems, Samara State Technical University, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.. ORCID:

Valery G.Goldstein

D.Sc. (Eng.), Professor, Department of Automatic Electric Power Systems, Samara State Technical University, Samara, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..

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