Abstract
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.
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Onysko, O., Kopei, V., Medvid, I., Pituley, L., Lukan, T. (2020). Influence of the Thread Profile Accuracy on Contact Pressure in Oil and Gas Pipes Connectors. In: Ivanov, V., Trojanowska, J., Pavlenko, I., Zajac, J., Peraković, D. (eds) Advances in Design, Simulation and Manufacturing III. DSMIE 2020. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-030-50794-7_42
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DOI: https://doi.org/10.1007/978-3-030-50794-7_42
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