The article deals with the principles of operation, key characteristics and design solutions of submersible electric drives for oil production in Rosneft Oil Company. An overview of the characteristics and design features of the manufacture of samples of linear drives existing on the market is presented, on the basis of which the limiting values of the operating parameters of the equipment under consideration are given. The typical composition and principle of operation of the main existing types of control stations for linear valve drives are described. The most significant differences in the specifics of the linear drive operation in comparison with a sucker rod pumping unit driven by a pumping unit are briefly described. The article also describes the process of calculating the required tractive effort of a linear drive depending on various technological conditions of well operation, including the assessment of the component of the tractive effort required to lift the liquid column, as well as all types of losses during equipment operation. The relationship between the traction force and the required power of the linear drive, depending on the speed of the moving element, is presented. The results of calculations of traction forces and powers for several types of wells with different operating parameters are presented. Also, the article presents the dependences of the change in the efficiency of a linear drive on the supply frequency and the degree of drive load. A list of the main design parameters that affect the traction force of the linear drive is presented. The analysis of the change in the values of the tractive effort for various design parameters and the change in the size of the equipment is carried out, as a result of which the maximum possible power for the standard sizes of equipment is determined, taking into account the existing restrictions on the change in design parameters.
References
1. Khakim'yanov M.I., Upravlenie elektroprivodami skvazhinnykh nasosnykh ustanovok (Control of electric drives of borehole pumping units), Moscow: Infra-Inzheneriya Publ., 2017, 138 p.
2. Galkin S.V., Koshkin K.A., Poplaukhina T.B., Analysis of structure of operational objects fund during operational estimation of residual oil stockpiles (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 2009, no. 10, pp. 37–39.
3. Certificate of authorship no. 1080694 USSR, Lineynyy asinkhronnyy dvigatel' vozvratno-postupatel'nogo dvizheniya (Linear asynchronous reciprocating motor), Authors: Semenov V.V., Rezin M.G., Vasev Yu.A.
4. Semenov V.V., Theory of mutual arrangement of tooth-groove structures of a linear asynchronous motor of a plunger pump for directional and horizontal wells (In Russ.), Neftegazovoe delo, 2007, V. 5, no. 1, pp. 86–90.
5. Patent RU2549381C1, Borehole linear motor, Inventors: Kaliy V.A., Savchenko M.S., Reznichenko A.V., Skvarskiy P.A.
6. Klyuchnikov A.T., Korotaev A.D., Shutemov S.V., Modeling a cylindrical linear valve motor (In Russ.), Elektrotekhnika, 2013, no. 11, pp. 14–16.
7. Klyuchnikov A.T., Korotaev A.D., Shulakov N.V., Shutemov S.V., Cylindrical linear ac electronic motor for operation pump (In Russ.), Avtomatizatsiya v elektroenergetike i elektrotekhnike, 2015, V. 1, pp. 158–162.
8. Korotaev A.D., Klyuchnikov A.T., Shutemov S.V., Baybakov M.S., The control algorithm of cylindrical linear motor with permanent magnets (In Russ.), Avtomatizatsiya v elektroenergetike i elektrotekhnike, 2015, V. 1, pp. 184–189.
9. Patent no. WO 2017/007656, Downhole linear motor and pump sensor data system, Inventors: Bell F., Cardamone D.P., Singh I., Santacesaria M., Halloran D.J., Roberts J.
10. Andriasov R.S., Mishchenko I.T., Petrov A.I. et al., Spravochnoe rukovodstvo po proektirovaniyu razrabotki i ekspluatatsii neftyanykh mestorozhdeniy. Dobycha nefti (Reference Guide for reservoir engineering and oilfield development. Oil production): edited by Gimatudinov Sh.K., Moscow: Nedra Publ., 1983, 455 p.
11. Lei D. et al., Optimization and application of reciprocating direct-drive electric submersible plunger pump lifting system in the Xinjiang oilfield, The Open Chemical Engineering Journal, 2019, V. 13, no. 1, pp. 68–80.
12. Timashev E.O., Chirkov D.A., Korotaev A.D., Operating characteristics of a cylindrical linear induction motor (In Russ.), Elektrotekhnika = Russian Electrical Engineering, 2018, no. 11, pp. 27–31.
13. Chirkov D.A., Klyuchnikov A.T., Korotaev A.D., Timashev E.O., Comparison of electromagnetic processes calculation methods on the example of a cylindrical linear electronic motor (In Russ.), Elektrotekhnika, informatsionnye tekhnologii, sistemy upravleniya, 2018, no. 28, pp. 76–91.
14. Korotaev A.D., Shulakov N.V., Shutemov S.V., Eksperimental'nye issledovaniya tsilindricheskogo lineynogo ventil'nogo elektrodvigatelya (Experimental studies of a cylindrical linear valve motor), Colected papers “Aktual'nye problemy energosberegayushchikh elektrotekhnologiy APEET-2014” (Actual problems of energy-saving electrical technologies APEET-2014), 2014, pp. 198–200.
15. Chirkov D.A., Korotaev A.D., Klyuchnikov A.T., Raschet osnovnykh parametrov tsilindricheskogo lineynogo ventil'nogo dvigatelya po skheme zameshcheniya (Calculation of the main parameters of a cylindrical linear valve motor according to the equivalent circuit), Collected papers “Avtomatizatsiya v elektroenergetike i elektrotekhnike” (Automation in electric power and electrical engineering), Proceedings of international scientific and technical conference, Perm', 21–22 April 2016, Perm': Publ. of PSTU, 2016, pp. 144–149.
16. Klyuchnikov A.T., Korotaev A.D., Chirkov D.A., Calculation method of cylindrical linear ac electronic motor magneticcircuit by an equivalent circuit (In Russ.), Informatsionno-izmeritel'nye i upravlyayushchie sistemy, 2010, no. 9, pp. 64–69.
