Model-based analysis and control of axial and torsional stick-slip oscillations in drilling systems

Bart Besselink, Nathan van de Wouw, Henk Nijmeijer

OnderzoeksoutputAcademic

11 Citaten (Scopus)

Samenvatting

The mechanisms leading to torsional vibrations in drilling systems are considered in this paper. Thereto, a drill string model of the axial and torsional dynamics is proposed, where coupling is provided by a rate-independent bit-rock interaction law. Analysis of this model shows that the fast axial dynamics exhibit an axial stick-slip limit cycle. This generates an apparent velocity-weakening effect in the torque-on-bit, explaining the onset of torsional vibrations. Based on this analysis, a strategy for control design aiming at the suppression of torsional vibrations is presented.
Originele taal-2English
Pagina's495-500
Aantal pagina's6
DOI's
StatusPublished - 2011
Extern gepubliceerdJa
Evenement2011 IEEE International Conference on Control Applications (CCA) - Denver, United States
Duur: 28-sep-201130-sep-2011

Conference

Conference2011 IEEE International Conference on Control Applications (CCA)
Land/RegioUnited States
StadDenver
Periode28/09/201130/09/2011

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