Petryna D. The fatigue properties of drilling pipes at the extreme conditions of drilling of holes.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0400U001023

Thesis Registration Form

0400U001023.pdf

Applicant for

Specialization

  • 05.05.12 - Машини нафтової та газової промисловості

30-03-2000

Specialized Academic Board

Д 20.052.04

Ivano-Frankivsk National University of Oil and Gas

Essay

The work are defended which comprise the results of theoretical and experimental investigations for fatigue properties of drilling pipes at the following extreme conditions of drilling of holes: single and cyclic overloading, availability of working environments and cracks in constructions. Established relationship between parametres of fatigue strength and wear resistance of materials of drilling pipes. Evaluation of serviceability of drilling pipes from the point of the -model was done.

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