Analysis and control of stick-slip oscillations in drilling systems

B. Besselink, T.G.M. Vromen, Niek Kremers, N. Van De Wouw

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Uittreksel

This paper proposes feedback control strategies for the mitigation of torsional stick-slip oscillations in drilling systems using drag bits. Herein, we employ a model for the coupled axial-torsional drill-string dynamics in combination with a rate-independent bit-rock interaction law including both cutting and frictional effects. Using a singular perturbation and averaging approach, we show that the dynamics of this model generate an apparent velocity-weakening effect in the torque-on-bit, explaining the onset of torsional stick-slip vibrations. Based on this dynamic analysis, the (decoupled) torsional dynamics can be described by a delay-differential equation with a state-dependent delay. Using this model, we propose both state-and output-feedback control strategies for the mitigation of torsional stick-slip oscillations, where the latter strategy uses surface measurements only. The effectiveness of the proposed approaches is shown in a simulation study.

Originele taal-2Engels
Artikelnummer7353168
Pagina's (van-tot)1582-1593
Aantal pagina's12
TijdschriftIEEE Transactions on Control Systems Technology
Volume24
Nummer van het tijdschrift5
DOI's
StatusGepubliceerd - 1 sep 2016

Vingerafdruk

Stick-slip
Drilling
Feedback control
Drill strings
Surface measurement
Dynamic analysis
Drag
Differential equations
Torque
Rocks

Citeer dit

Besselink, B. ; Vromen, T.G.M. ; Kremers, Niek ; Van De Wouw, N. / Analysis and control of stick-slip oscillations in drilling systems. In: IEEE Transactions on Control Systems Technology. 2016 ; Vol. 24, Nr. 5. blz. 1582-1593.
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Analysis and control of stick-slip oscillations in drilling systems. / Besselink, B.; Vromen, T.G.M.; Kremers, Niek; Van De Wouw, N.

In: IEEE Transactions on Control Systems Technology, Vol. 24, Nr. 5, 7353168, 01.09.2016, blz. 1582-1593.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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