Rachkevych R. Improving the methods of forecasting the durability of drill columns under complicated conditions of boring holes

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0406U002799

Applicant for

Specialization

  • 05.05.12 - Машини нафтової та газової промисловості

25-05-2006

Specialized Academic Board

Д 20.052.04

Ivano-Frankivsk National University of Oil and Gas

Essay

The author has worked out a number of methods determining the bending stress and deformation extent at any point of the drill column in the curved hole of the bore. Another chapter of the dissertation deals with improving the existing methods of forecasting the durability of borehole units. Great attention is given to determining the surplus resource based on the results of investigating the tensile stress and defectoscopy – C-criterion and KI-criterion.

Files

Similar theses