Influence of the Thread Profile Accuracy on Contact Pressure in Oil and Gas Pipes Connectors

  • Oleh OnyskoEmail author
  • Volodymyr Kopei
  • Iuliia Medvid
  • Lolita Pituley
  • Tetiana Lukan
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


Pipeline connectors of the oil and gas assortment must ensure good screwing and durability during it. These operating requirements depend to a large extent on the contact pressure between the thread surfaces of the pin and the box at the start of screwing and in the fully screwed state. The paper presents the study of the dependence of the contact pressure between the threads of the box and the pin, depending on the accuracy of the profile of the threads. The contact pressures at the time of insertion of the pin into the box are investigated based on theoretical assumptions about the effect of the weight of the drill pipe stand on the example of the tool joint 2 7/8 Reg. Based on the finite element method for the 114 mm diameter tubing connector, the contact pressure inside the connector, depending on the accuracy of the thread profile is investigated. Studies show that at the time of insertion of the pin into the drill pipe box, the pressure changes by almost 10% depending on the upper and lower limit of the thread profile deviations. In a finally screwed state, the contact pressure increases twice if the pin thread profile is made on upper limit deviation, and at the box, the thread profile is made as nominal.


Threading tool-joint Tapered thread Finite element model Process of screwing Pin and box 


  1. 1.
    Onysko, O., Havryliv, Y., Kopey, V., Medvid, I., Vryukalo, V.: Theoretical studies of the contact pressure value between the surfaces of the pin and the box in the small diameter drill pipes connectors. In: Ziobro, J. (ed.) CONFERENCE 2019, Napęndy pojazdów. Modelowanie komputerowe konstrukcji i układów technologicznzch, pp. 202–210. Wydawnictwo Uniwersytetu Rzeszowskigo, Rzeszów (2019)Google Scholar
  2. 2.
    Xu, H., Shi, T., Zhang, Z., Shi, B.: Loading and contact stress analysis on the thread teeth in tubing and casing premium threaded connection. Math. Probl. Eng. Accessed 03 Jan 2020
  3. 3.
    Wang, W., Marshek, K.: Determination of the load distribution in a threaded connector having dissimilar materials and varying thread stiffness. J. Eng. Ind. 1(117), 1–8 (1995)CrossRefGoogle Scholar
  4. 4.
    Chen, S., An, Q., Zhang, Y., Gao, L., Li, Q.: Loading analysis on the thread teeth in cylindrical pipe thread connection. J. Pressure Vessel Technol. 3(132), 0312021–0312028 (2010)Google Scholar
  5. 5.
    Baragetti, S.: Effects of taper variation on conical threaded connections load distribution. J. Mech. Des. 2(124), 320–329 (2002)CrossRefGoogle Scholar
  6. 6.
    Sugino, M., Nakamura, M., Yamaguchi, S., Daly, D., Briquet, G., Verger, E.: Development of an innovative high-performance premium threaded connection for OCTG. In: Proceedings of the 10th Offshore Technology Conference (OTC 2010), Houston, USA, pp. 1883–1891 (2010)Google Scholar
  7. 7.
    Wang, J., Mathew, P., Li, X., Huang, C., Zhu, H.: Experimental study on cutting characteristics for buttress thread turning of 13%Cr stainless steel. In: Key Engineering Materials. Advances in Materials Processing IX, vol. 443, pp. 262–267(2010)Google Scholar
  8. 8.
    Luo, S., Wu, S.: Effect of stress distribution on the tool joint failure of internal and external upset drill pipes. Mater. Des. 52, 308–314 (2013)CrossRefGoogle Scholar
  9. 9.
    Hamilton, K., Wagg, B., Roth, T.: Using ultrasonic techniques to accurately examine seal surface contact stress in premium connections. In: Proceedings of the SPE Annual Technical Conference and Exhibition, ATCE 2007, Anaheim, CA, USA, vol. 5, pp. 3461–3471 (2007)Google Scholar
  10. 10.
    Shats’kyi, I., Lyskanych, O., Kornuta, V.: Combined deformation conditions for fatigue damage indicator and well–drilling tool joint. Strength Mater. 48, 469–472 (2016)CrossRefGoogle Scholar
  11. 11.
    Levchuk, K., Moisyshyn, V., Tsidylo, I.: Influence of mechanical properties of a material on dynamics of the stuck drilling pipes. Metallophys. Adv. Technol. 38(12), 1655–1668 (2016). [in Ukrainian]Google Scholar
  12. 12.
    Vlasiy, O., Mazurenko, V., Ropyak, L., Rogal, O.: Improving the aluminum drill pipes stability by optimizing the shape of protector thickening. East.-Eur. J. Enterp. Technol. 1(7(85)), 25–31 (2017)CrossRefGoogle Scholar
  13. 13.
    Ropyak, L., Shuliar, I., Bohachenko, O.: Influence of technological parameters of centrifugal reinforcement upon quality indicators of parts. East.-Eur. J. Enterp. Technol. 1(5(79)), 53–62 (2016)Google Scholar
  14. 14.
    Moisyshyn, V., Levchuk, K.: The impact of vibration mechanism’ zone installation on the process of retrieving stuck drill pipes. Min. Min. Deposits 10(3), 65–76 (2016)CrossRefGoogle Scholar
  15. 15.
    Skitsa, L., Yatsyshyn, T., Liakh, M., Sydorenko, O.: Ways to improve safety of pumping-circulatory system of a drilling rig. Min. Min. Deposits 12(3), 71–79 (2018)CrossRefGoogle Scholar
  16. 16.
    Bulbuk, O., Velychkovych, A., Mazurenko, V., Ropyak, L., Pryhorovska, T.: Analytical estimation of tooth strength, restored by direct or indirect restorations. Eng. Solid Mech. 7(3), 193–204Google Scholar
  17. 17.
    Shatskyi, I., Popadyuk, I., Velychkovych, A.: Hysteretic properties of shell dampers. In: Awrejcewicz, J. (ed.) Dynamical Systems in Applications. DSTA 2017. Springer Proceedings in Mathematics & Statistics, vol. 249, pp. 343–350. Springer, Cham (2018)Google Scholar
  18. 18.
    Volchenko, N., Volchenko, A., Volchenko, D., Poliakov, P., Malyk, V., Zhuravliov, D., Vytvytskyi, V., Krasin, P.: Features of the estimation of the intensity of heat exchange in selfventilated disk–shoe brakes of vehicles. East.-Eur. J. Enterp. Technol. 1(5(97)), 47–53 (2019)CrossRefGoogle Scholar
  19. 19.
    Kopei, V., Onysko, O., Panchuk, V.: The application of the uncorrected tool with a negative rake angle for tapered thread turning. In: Ivanov, V., et al. (eds.) Advances in Design, Simulation and Manufacturing II. DSIME 2019. LNME, pp. 149–158. Springer, Cham (2019)Google Scholar
  20. 20.
    Kopei, V., Onysko, O., Panchuk, V.: Computerized system based on FreeCAD for geometric simulation of the oil and gas equipment thread turning. In: IOP Conference Series: Materials Science and Engineering, vol. 477, p. 012032 (2019)Google Scholar

Copyright information

© The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Ivano-Frankivsk National Technical University of Oil and GasIvano-FrankivskUkraine

Personalised recommendations