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Investigation of Frictional Effects on Buckling Behavior of Drill String

[+] Author Affiliations
Jamil Abdo, Danish Haneef, Khalid Alzebdeh

Sultan Qaboos University, Muscat, Oman

Hamed Al-Sharji

Petroleum Development Oman, Muscat, Oman

Paper No. IMECE2013-64849, pp. V009T10A109; 6 pages
doi:10.1115/IMECE2013-64849
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 9: Mechanics of Solids, Structures and Fluids
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5638-3
  • Copyright © 2013 by ASME

abstract

The in-house developed experimental setup that imitates the wellbore being drilled in presence of surrounding drilling fluid is utilized to investigate the buckling phenomena of drill string. The paper also presents experimental investigations on the effect of changing the friction coefficient on the buckling lock-up situations of drill string. Results reveal that axial transferred loads decrease with the increase of friction coefficient. The results, highlights the significance of changing the drilling fluid rheology, mainly the friction factor, to reduce the friction between the wellbore and the tubing, and thus improve axial force transfer which is mainly responsible for initiation of buckling and limited reach of drilling operation. Drilling fluid with lower friction factor significantly reduces the friction between the tubing and the wellbore. The tube takes the same shape with the change of COF at the same load.

Copyright © 2013 by ASME

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