DOI: https://doi.org/10.15407/techned2020.02.043


Journal Tekhnichna elektrodynamika
Publisher Institute of Electrodynamics National Academy of Science of Ukraine
ISSN 1607-7970 (print), 2218-1903 (online)
Issue No 2, 2020 (March/April)
Pages 43 - 49

A.V. Malyar*., A.S. Andreishyn
Lviv Polytechnic National University,
S. Bandera str., 12, Lviv, 79013, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
* ORCID ID : https://orcid.org/0000-0001-7735-0592


The paper discusses the issues of regulating the swing frequency of the pump jack balance beam of marginal wells, from which oil is produced using sucker rod pumps, associated with switching the wells from intermittent to continued operation. A mathematical model, which comprises the mathematical models of the pump jack and driving motor, allowing solving the problems of regulating the balance beam swings frequency according to the flow rate variation on the basis of the electric drive complex model, was developed. The filling of the pump with liquid defines the shape of the load curve, and therefore it is the basis for determining the law of load torque variation. There was proposed a method of computing the static characteristics of the induction motor driving the pump jack, taking into consideration the periodically variable load torque and moment of inertia of the working parts. The periodic dependencies of the coordinates of the steady-state mode of the electric drive are computed by solving a boundary-value problem. The proposed mathematical model makes it possible to determine the dependencies of the current, power, electromagnetic torque and other significant operation parameters on the amplitude and frequency of the induction motor supply voltage in order to estimate the maximum permissible values. It can be used for designing and adjustment of the variable frequency drive of the sucker-rod pumping unit, which ensures the continuous operation of the marginal well consistent with the flow rate variation. References 11, figures 5.

Key words: sucker-rod pumping unit, marginal well, asynchronous electric drive, steady-state mode, boundary-value problem, static characteristics, frequency regulation.

Received: 20.09.2019
Accepted: 20.01.2020
Published: 26.02.2020


1. Akulshyn O.O. About establish modes of operation well rod deep pumping unit provided Pv < Pn. Naftova i gazova promyslovist. 2004. No 5. Pp. 20-31. (Rus)
2. Boyko V.S. Development and exploitation of oil fields. Кyiv: Real Print, 2004. 695 p. (Ukr)
3. Beliaev E.F., Tashkinov A.A., Tsyliov P.N. Improvements of the beam pumping unitelectrical drive of the dripper. Vestnik Permskogo natsionalnogo issledovatelskogo polytechnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo. 2012. No 4. Pp. 91-102. (Rus) DOI: https://doi.org/10.15593/2224-9923/2012.4.11
4. Volkov А.V., Skalko Yu.S. Digital model of frequency-regulated electric drive with scalar control. Elektrotechnika ta elektroenergetyka. 2005. No 2. Pp. 75-81. (Rus)
5. Malyar A.V., Kaluzhnyi B.S. Automatic control and monitoring system of oil extraction process. Lviv: Lvivska Politekhnika, 2012. 272 p. (Ukr)
6. Malyar A.V. Dynamics of the electric drive of the deep-well oil pumping unit. Tekhnichna Elektrodynamika. 2007. No 2. Pp. 50-54. (Ukr)
7. Malyar V.S., Malyar A.V., Andreishyn A.S. A method for calculating mechanical characteristics of induction motors with squirrel-cage rotor. Electrical engineering & electromechanics. 2019. No 2. Pp. 9-13. DOI: https://doi.org/10.20998/2074-272X.2019.2.02
8. Malyar V.S., Malyar A.V. Mathematical modeling of periodic modes of electrotechnical devices. Elektronnoe modelirovanie. 2005. Vol. 27. No 3. Pp. 39-53. (Rus)
9. Fayzullin I.K., Kiselyov V.V., Eldashev D.A., Proshchekalnikov D.V., Guryanov A.I., Fassakhov R.Kh. Energy resource saving mode of operation of stripped oil wells. Neftyanoe khozyaystvo. 2007. No 1. Pp. 66-67. (Rus)
10. Filts R.V. Mathematical foundations of the theory of electromechanical transducers. Kyiv: Naukova dumka, 1979. 208 p. (Rus)
11. Charonov V.Ya. Economical electric drives for sucker-rod pump of the marginal well. Neftyanoe khozyaystvo. 1996. No 12. Pp. 46-48. (Rus)





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