Progressive technologies for the drilling of oil and gas wells

Mikhail V. Pesin Sc.D., professor, deputy director Department Innovative manufacturing engineering Perm national research polytechnic university, Perm, Russian Federation M.Pesin@mail.ru
Vladimir F. Makarov Sc.D., professor, deputy head Department Innovative manufacturing engineering Perm national research polytechnic university, Perm, Russian Federation
DOI: 10.24411/2076-6785-2019-10053

Showing the relationship between the constructive and technological process of hardening threaded conical surface drill pipe (geometry of a strengthening of the movie, the size of the load, radius of hollow), magnitude and distribution of residual stresses in a threaded surface based on complex mathematical models developed and a series of pilot studies stress-strain state  threads and fatigue tests.

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