Finite Element Analysis on Axial-Torsional Coupled Vibration of Drill String

Xue Liang Bi; Jian Wang; Zhan Lin Wang; Shi Hui Sun

doi:10.4028/www.scientific.net/AMR.291-294.1952

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Finite Element Analysis on Axial-Torsional Coupled...

Finite Element Analysis on Axial-Torsional Coupled Vibration of Drill String

Abstract:

In the drilling process, axial vibration, transverse vibration and torsional vibration happen to drilling string. And the coupled vibration is more complex. In the resonance state, drilling string collides with the wall, which causes serious damage on drilling string in a short time and results in economic loss to the drilling operation. In this paper, the regularity of coupled vibration is analyzed by using finite element method. The model of full-hole drilling strings is established. The distribution regularities of coupled resonant frequency are obtained through computer analysis. The coupled model is more accurate than single vibration model. And the gaps of high rotary speed resonance regions are larger. Resonance state can be avoided by changing rotary speed, and drilling accidents can be reduced.

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Periodical:

Advanced Materials Research (Volumes 291-294)

Pages:

1952-1956

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.291-294.1952

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Online since:

July 2011

Authors:

Xue Liang Bi, Jian Wang, Zhan Lin Wang, Shi Hui Sun

Keywords:

Coupled Vibration, Drilling String, Finite Element Analysis (FEA), Resonance

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References

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