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Experimental Studies on Galling Onset in OCTG Connections: A Review

[+] Author Affiliations
S. Ekwaro-Osire, F. Karpat

Texas Tech University

Paper No. IMECE2006-15018, pp. 29-35; 7 pages
doi:10.1115/IMECE2006-15018
From:
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Tribology
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Tribology Division
  • ISBN: 0-7918-4782-9 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME

abstract

With today's high prices for natural gas and oil, the demand for oil and country tubular goods (OCTG), with superior performance properties, is very high. Failures in OCTG can be attributed to numerous sources, for example, makeup torque, corrosion, and galling. Thread galling is the most common mode of failure. This failure often leads to leakage, corrosion of the material, and loss of mechanical integrity. The failure of OCTG eventually amounts to excessive operational costs for the gas and oil industry. The have been numerous approaches taken to improve the galling resistance of OCTG connections. The advocacy of these approaches is often achieved through experimental studies using galling testers. In this paper, it is proposed to classify the galling testers in seven distinct groups. There is a need to design and use effective galling testers to understand and improve the performance of OCTG connections. Thus, the objective of this paper was to present a concise review of literature related to the galling testers that may have applications to OCTG.

Copyright © 2006 by ASME

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