вечности и остаточного ресурса.
Ключевые слова: скважинное оборудование, схематизация нагрузки,
коррозионно-усталостное повреждение, долговечность, остаточный ресурс.
Artym V.I. Scientific bases progressing of loading influencing
estimation on durability of downhole equipment mobile members. –
Manuscript. Thesis for a doctor’s degree on technical sciences on the
speciality 05.05.12 – Equipment for Oil and Gas Industry. –
Ivano-Frankivsk National Technical University of Oil and Gas,
The thesis is dedicated to a solution of loading influencing problems on
corrosion-fatigue damage accumulation of downhole equipment mobile
members (DEMM) with the purpose for effective methods development of
their durability and residual life evaluation.
The experimental researches of DEMM operation loading and local stresses
of a flexure in members of drill columns and sucker rod string on curved
leases are held. The method of DEMM fatigue damages summation at a
broadband loading and applicable method of stochastic loading process
schematization are designed. A method of the high-level skew stresses
registration and four-parametric equation of a fatigue curve for the
corrosive factor registration are designed at an estimation of DEMM
durability. Experiment-calculated methods of DEMM loading estimation
with the help of loading indicator both DEMM loading and residual life
estimation by results of studies at full-scale model with miscellaneous
stored corrosion-fatigue damage are improved. Findings of investigation
are approved experimentally on DEMM full-scale samples.
The all-up registration idealized and experimental researches, which one
are founded on legitimacies of corrosion-fatigue damage accumulation
kinetics at downhole equipment mobile members, in particular, drill
columns, geophysical cables, sucker rod string, has enabled to improve
computational methods of their durability and residual life. The
designed method of applications and facilities are inserted in an
Keywords: downhole equipment, loading schematization, corrosion-fatigue
damage, durability, residual life.
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