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Investigation on Effect of Downhole Vibration Force on Drilling Performance With a Dynamic BHA Model

[+] Author Affiliations
Lei Wang, Jianming Yang, Stephen Butt, Hongyuan Qiu

Memorial University of Newfoundland, St. John’s, NL, Canada

Paper No. OMAE2015-41226, pp. V010T11A002; 9 pages
doi:10.1115/OMAE2015-41226
From:
  • ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 10: Petroleum Technology
  • St. John’s, Newfoundland, Canada, May 31–June 5, 2015
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5658-1
  • Copyright © 2015 by ASME

abstract

A dynamic bottom hole assembly (BHA) model is built with finite element method (FEM) in this paper. This model is used for evaluation the influence of externally added vibration to the BHA system. With this dynamic model along with a general bit-rock interaction formula, the BHA’s motion in axial and torsional directions are examined. Parametric study is carried out by varying the parameters of the applied vibration force, including the mean value, amplitude, angular frequency, and the location of this force excitation. The simulation results indicate that externally applied vibration force is indeed able to improve drilling performance. In particular, the mean value and amplitude of the applied force have a almost linear relation with ROP and WOB. The stresses distributions along BHA are investigated as well.

Copyright © 2015 by ASME
Topics: Drilling , Vibration

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