Chemical and Petroleum Engineering

, Volume 36, Issue 2, pp 87–89 | Cite as

Improving the reliability, durability, and efficiency of drill-rig shock absorbers with shell-type elastic elements

  • A. S. Velichkovich
  • S. V. Velichkovich
Research, Design, Calculations, and Operating Experience Oil and Gas Equipment


Drilling Adapter Drilling Fluid Shock Absorber Drill Pipe 
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  1. 1.
    A. S. Velichkovich and S. V. Velichkovich, “Bottom-hole shock absorber with a shell-like elastic element of variable stiffness,”Khim. Neft. Mashinostr., No. 8, 10–11 (1994).Google Scholar
  2. 2.
    S. V. Velichkovich, “Improving efficiency in the drilling of wells,”Ekspress-Informatsiya. Ser. Burenie, No. 9, 5–7 (1986) (published by VNIIOENG in Moscow).Google Scholar
  3. 3.
    Author's Certificate No. 1059319 USSR, MKI E 16 F 15/02.Elastic Spindle for a Bottom-Hole Engine.Google Scholar
  4. 4.
    Author's Certificate No. 842189 USSR, MKI B21 B 17/06.Drill-Rig Shock Absorber.Google Scholar
  5. 5.
    Author's Certificate No. 607943 USSR, MKI E 21 B 17/06.Shock Absorber.Google Scholar

Copyright information

© Kluwer Academic/Plenum Publishers 2000

Authors and Affiliations

  • A. S. Velichkovich
    • 1
  • S. V. Velichkovich
    • 2
  1. 1.Ivano-Frankovsk State Engineering University of Oil and GasUSSR
  2. 2.Institute of Applied Problems of Mechanics and Mathematics (under the National Academy of Sciences of the Ukraine)USSR

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