Fatigue of drill string connections

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Abstract

This paper reports full-scale tests on threaded connections used in drill strings. A concise background is given concerning the in-service environment and loading conditions on the connections. This details some of the reasons particular steels are used in preference to others. Crack growth data is given for ten full-scale axial and rotating bend tests. This is compared with predictions from a dedicated weight function fracture mechanics solution designed for threaded connections. Crack aspect ratio is considered with a view to development of an appropriate empirical model.

Original languageEnglish
Pages (from-to)126-132
Number of pages7
JournalJournal of Offshore Mechanics and Arctic Engineering
Volume117
Issue number2
DOIs
Publication statusPublished - 1 May 1995

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Keywords

  • fatigue
  • drill strings
  • fracture
  • steel
  • weight
  • fracture mechanics

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