0
RESEARCH PAPERS

The Effect of Tool Joint Stiffness on Drill Pipe Fatigue in Riser Ball Joints

[+] Author and Article Information
A. Ertas, W. R. Blackstone, B. K. Majumdar

Mechanical Engineering Department, Texas Tech University, Lubbock, TX 79409

J. Eng. Ind 111(4), 369-374 (Nov 01, 1989) (6 pages) doi:10.1115/1.3188774 History: Received September 01, 1987; Online July 30, 2009

Abstract

It is well known that the ball joint in a marine riser can cause fatigue damage in the drill pipe passing through. Previous investigators have assessed the damage done for a lower ball joint angle of 3–5 degrees (drilling) and 1–3 degrees (running casing). This paper extends that work to deep water operations in which an upper ball joint is also present. Also, it is shown, via finite element models, that tool joint bending stiffness can have a significant effect on fatigue life. Fatigue damage calculations, including this heretofore unconsidered effect, are presented for various ball joint angles and drill pipe tensions.

Copyright © 1989 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In