Improving the retention capacity of clamping elements

Автор(и)

DOI:

https://doi.org/10.15587/1729-4061.2020.195193

Ключові слова:

wedge grip, drill pipes, clamp force, jaw notch, retention capacity

Анотація

An analysis of the discarded drill pipes that had been used in wedge grips has revealed that the main reason for pipe rejection is the reduction of a pipe wall as a result of plastic deformations, due to damaging the pipe surface by the die teeth. The long-term exposure to loads results in the plastic deformations of cylindrical parts, which could lead to unacceptable damage and distortion of the shape. In the oil industry, when drilling and casing pipes are clamped, stresses over some areas in the capture zone exceed the fluidity limit. Multiple clamps of the pipe could reduce the wall of the pipe in the capture area, which leads to premature failure of the pipe. Pipe crumpling occurs not immediately when the load is applied but gradually, by local plastic deformity of the pipe at various points in length and circumference, where the stresses exceed the limit of the fluidity of the pipe material. In order to prevent unacceptable deformations of pipes during hoisting operations, we have considered the possibilities to reduce loads.

In this regard, special attention has been paid to the design of clamping jaws that provide the increased retention capacity and the technology of their manufacture. The greatest retention capacity is ensured by jaws with an oblique intersecting notch. In such jaws, the teeth of the notch are arranged chequerwise. This makes it possible to exclude the formation of vertical grooves on the body of the pipe due to slippage induced by the axial load. However, the manufacture of such notches at the inner cylindrical surface of clamping jaws is associated with some difficulties. This relates to that there are no standard tools for making such notched surfaces of complex configuration. The result of our research is the designed and manufactured special tool, as well as the technology for its fabrication. That has made it easier to cut the notches on clamping jaws that ensure the reliable capture of drill pipes

Біографії авторів

Emin Musa Afandiyev, Azerbaijan State University of Economics Istiglaliyyat str., 6, Baku, Azerbaijan, AZ 1001

PhD, Associate Professor

Department of Standardization and Certification

Mahamadali Nuraddin Nuriyev, Azerbaijan State University of Economics Istiglaliyyat str., 6, Baku, Azerbaijan, AZ 1001

Doctor of Technical Sciences, Professor

Department of Standardization and Certification

Посилання

  1. Markov, O., Gerasimenko, O., Khvashchynskyi, A., Zhytnikov, R., Puzyr, R. (2019). Modeling the techological process of pipe forging without a mandrel. Eastern-European Journal of Enterprise Technologies, 3 (1 (99)), 42–48. doi: https://doi.org/10.15587/1729-4061.2019.167077
  2. Raygorodskiy, R. P., Sudnitsyn, N. V. (1949). Pat. No. SU 95916 A1. Klin'evoy zahvat dlya buril'nyh i obsadnyh trub. declareted: 09.06.1949; published: 01.01.1953.
  3. Afandiyev, E. M., Nuriyev, M. N. (2019). Studying the quality of drill pipes clamped in a wedge clamp. Eastern-European Journal of Enterprise Technologies, 4 (7 (100)), 16–21. doi: https://doi.org/10.15587/1729-4061.2019.174494
  4. Rukovodstvo po trubam neftyanogo sortamenta i ih soedineniyam, primenyaemym za rubezhom (1969). Moscow: Nedra, 296.
  5. Wang, L., Guo, S., Gong, H., Shang, X. (2016). Research and development of a self-centering clamping device for deep-water multifunctional pipeline repair machinery. Natural Gas Industry B, 3 (1), 82–89. doi: https://doi.org/10.1016/j.ngib.2015.12.012
  6. Djukic, L. P., Sum, W. S., Leong, K. H., Hillier, W. D., Eccleshall, T. W., Leong, A. Y. L. (2015). Development of a fibre reinforced polymer composite clamp for metallic pipeline repairs. Materials & Design, 70, 68–80. doi: https://doi.org/10.1016/j.matdes.2014.12.059
  7. Yakhin, A. R., Ismakov, R. A., Garifullin, R. R., Yangirov, F. N. (2014). Surface hardening for drill pipe life improvement. Neftegazovoe delo, 4, 381–399.
  8. Bulatov, A. I., Proselkov, Yu. M., Shamanov, S. A. (2013). Tehnika i tehnologiya bureniya neftyanyh i gazovyh skvazhin. Vestnik nauki Sibiri, 3 (9).
  9. Markov, O., Gerasimenko, O., Aliieva, L., Shapoval, A. (2019). Development of the metal rheology model of high-temperature deformation for modeling by finite element method. EUREKA: Physics and Engineering, 2, 52–60. doi: https://doi.org/10.21303/2461-4262.2019.00877
  10. Lopatuhin, I. M. (1989). Razrabotka zazhimnyh ustroystv neftepromyslovogo oborudovaniya s povyshennoy uderzhivayushchey sposobnost'yu. Moscow.
  11. Efendiev, E. M., Lopatuhin, I. M. (1972). Avtorskoe svidetel'stvo SSSR No. 356059. Instrument dlya narezaniya kosyh vnutrennih nasechek. Bul. No. 32.

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Опубліковано

2020-02-29

Як цитувати

Afandiyev, E. M., & Nuriyev, M. N. (2020). Improving the retention capacity of clamping elements. Eastern-European Journal of Enterprise Technologies, 1(1 (103), 47–51. https://doi.org/10.15587/1729-4061.2020.195193

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