Sucker rods are very impotent components of the borehole equipment of sucker rod pumping units and serve for transfer the back and forth motion from the surface pumping jack to a plunger of the deep pump. Operation of sucker rods takes place in difficult conditions of alternative loadings of stretching/compression, a bending loading due buckling, friction on internal surface of a tubing column, influences of the corrosive and active environment, deposits of asphalt-resin-paraffin on sucker rods and tubing. For the purpose to increase a resource of a column of sucker rods it is offered instead of steel to use the sucker rods made of polymere composite materials (a fiberglass, carbon fiber, hybrid with two steel heads). Application of hybrid sucker rods gives many economic and operational advantages in comparison with steel and fiberglass rods. With increase of running depth of a column of sucker rods the load on the rods, and, therefore, on connections of a steel head with a polymeric composite body increases. Influence of elastic characteristics of material of a hybrid core (parameter of an ortotropiya, parameter of pliability of shift, coupling size) and features of its contact interaction with a steel head at a size and distribution of pressure and, as a result of it, on durability and operability of the considered constructive connection has practical interest at connection design. The task of increase the durability of connection of a hybrid sucker rod and its reliability is set. In work we are using the finite element analysis in the program SolidWorks. Environment of finite element method is offered to design an optimum f connection of a steel head with a composite body of a hybrid sucker rod. On the basis of the carried-out analysis the design of connection with a cylindrical part of a steel head of variable thickness, with cuts in this cylindrical part in the form of petals and performance galtel at the exit from contact of a head and a core of a rod is offered
Received 11.05.2022
Revised 28.09.2022
Accepted 28.11.2022
[1] Yvanovskyi V. N., Daryshchev V. Y., Sabyrov A. A., Kashtanov V. S., Pekyn S.S. Oborudovanye dlia dobuchy nefty y haza: V 2 ch. M: «Neft i haz», RHU nefti i haza im. I.M. Hubkyna, 2002. Ch. 1. 768 p. [in Russian]
[2] HOST 31825-2012. Shtanhy nasosnue, shtoky ustevue y muftu k nym. Tekhnycheskye uslovyia. [in Russian]
[3] Kopei I.B. Otsinka, prohnozuvannia ta pidvyshchennia nadiinosti obladnannia shtanhovykh sverdlovynnykh nasosnykh ustanovok. Rukopys. Dys. kand. tekhn. nauk: 05.05.12, m. Ivano-Frankivsk, 2020. [in Ukrainian]
[4] API Spec 11B: Specification for Sucker Rods, Polished Rods and Liners, Couplings, Sinker Bars, Polished Rod Clamps, Stuffing Boxes, and Pumping Tees.
[5] HOST R 51161-98 Shtanhy nasosnue stekloplastykovue. Tekhnycheskye uslovyia. [in Russian]
[6] TU U 29.5-13741713-002:2006. Shtanhy nasosni metaloplastykovi. Tekhnichni umovy. Vved. 19.04.2007. Bez obmezhennia terminu dii. Ivano-Frankivsk, 2006. [in Russian]
[7] Iui Shuanzhui. Pidvyshchennia pratsezd tnosti nasosnykh shtanh z polimernykh kompozytnykh materialiv. Rukopys. Dys. kand. tekhn. nauk: 05.05.12, Ivano-Frankivsk, 2018. [in Ukrainian]
[8] Kopei B. V., Kopei V. B. Kopei I. B. Nasosni shtanhy sverdlovynnykh ustanovok dlia vydobuvannia nafty. Monohrafiia. Ivano-Frankivsk: IFNTUNH, 2009. 406 p. [in Ukrainian]
[9] Nasosni shtanhy ta truby z polimernykh kompozytiv: proektuvannia, rozrakhunok, ta vyprobuvannia [Tekst] / B. V. Kopei [ta in.] ; Instytut prykladnykh problem mekhaniky i matematyky im. Ya.S.Pidstryhacha NAN Ukrainy, Ivano-Frankivskyi natsionalnyi tekhnichnyi un-t nafty i hazu. L.: [b.v.], 2003. 352 p.: rys. Bibliohr.: p. 349-350. - ISBN 966-02-3071-0 [in Ukrainian]
[10] Patent Ukrainy No 35751A Sposib ziednannia stalnoi holovky z polimernym kompozytsiinym tilom hlybynno-nasosnoi shtanhy / Kopei B.V., Kopei V.B., Kopei I.B. Zaiavl. No 98042004 vid 22.04.98. [in Ukrainian]
[11] Patent Ukrainy № 35781A Sposib skladannia vuzla kriplennia polimernoho sterzhnia / Kindrachuk S.B., Kopei B.V., Popovych O.M. Zaiavl. No 98084478 vid 18.08.98. Biul. No 3, 16.04.01. [in Ukrainian]
[12] Patent Ukrainy № 50094A. Ziednannia stalnoi holovky z polimerno-kompozytsiinym tilom nasosnoi shtanhy / Kryzhanivskyi Ye.I., Kopei B.V., Steliha I.I., Kopei V.B. Zaiavl. No 200107 5462 vid 31.07.01. Biul. No 10, 15.10.02. [in Ukrainian]
[13] Patent Ukrainy № 50093A. Ziednannia holovky nasosnoi shtanhy z skloplastykovym tilom / Kopei B.V., Steliha I.I., Kopei V.B., Petryna Yu.D. Zaiavl. No 2001075460 vid 31.07.01. Biul. No 10, 15.10.02. [in Ukrainian]
[14] Shcherbyna N.M. Metody rozviazuvannia kontaktnykh zadach dlia pruzhnykh anizotropnykh sharuvatykh tsylindrychnykh obolochok. Prepr. NAN Ukrainy. In-t prykl. problem mekhaniky i matematyky im. Ya.S.Pidstryhacha, No 7, 1994. 58 p. [in Ukrainian]
[15] Pelekh B.L., Sukhorolskyi M.A. Kontaktnue zadachy teoryy upruhykh anyzotropnukh obolochek. K.: Nauk. dumka, 1980. 216 p. [in Russian]
[16] Hryholiuk Z.Y., Tolkachev V.M. Kontaktnue zadachy teoryy plastyn y obolochek. M.: Mashynostroenye, 1980. 416 p. [in Russian]
[17] Pelekh B.L., Maksymu A.V., Shcherbyna N.N. Kontaktnaia zhestkost sloystukh tsylyndrycheskykh obolochek. Matrychnui metod reshenyia kontaktnykh zadach dlia mnohosloinykh obolochek. Mekhanyka kompozytnukh materyalov. 1986. No 2. P. 276-280. [in Russian]
[18] Popov H.Ia., Tolkachev V.M. Problema kontakta tel s tonkostennumy elementamy. Yzv. AN SSSR. Mekhanyka tverdoho tela. 1980. No 4. P. 192-206. [in Russian]
[19] Doslidzhennia kontaktnykh napruzhen u ziednanni stalevoi holovky z skloplastykovoiu shtanhoiu / Kopei B. V., Maksymuk O. V., Shcherbyna N. M., Kopei I. B. Rozvidka ta rozrobka naftovykh i hazovykh rodovyshch. 1996. No 33. P. 166-178. [in Ukrainian]
[20] Development of steel head joints with fiberglass sucker rod on the base of contact stresses investigation / Kopey B. V., Kopey I. B., Maksymuk A. V., Shcherbyna N. M. VTT SYMPOSIUM : Proceedings of Int. Symp. Fatigue Design 1998. (Espoo, Finland. 26-29 May 1998). 1998. 182. Vol. II. P. 603-612. ISSN 0357-9387.