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TECHNICAL PAPERS

Stick-slip Whirl Interaction in Drillstring Dynamics

[+] Author and Article Information
R. I. Leine, D. H. van Campen

Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands

W. J. G. Keultjes

Shell International Exploration and Production b.v., Volmerlaan 8, P.O. Box 60, 2280 AB Rijswijk, The Netherlands

J. Vib. Acoust 124(2), 209-220 (Mar 26, 2002) (12 pages) doi:10.1115/1.1452745 History: Received November 01, 2000; Revised October 01, 2001; Online March 26, 2002
Copyright © 2002 by ASME
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References

Figures

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Measured downhole angular velocity versus time
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Measured downhole friction curve
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Measured downhole bending moment versus surface angular velocity; sweep-up followed by sweep-down
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Whirl Model, equilibrium branches
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Stick-slip Whirl Model, equilibrium branches
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Stick-slip Whirl Model, periodic branches (bold)
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Stick-slip Whirl Model, zoom of Fig. 9
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Stick-slip Whirl Model, zoom of Fig. 10
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Stick-slip Whirl Model, zoom of Fig. 11
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Saddle-node bifurcation in a smooth and non-smooth system

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