Stochastic modeling for hysteretic bit–rock interaction of a drill string under torsional vibrations

Real, FF, Batou, A, Ritto, TG and Desceliers, C (2019) Stochastic modeling for hysteretic bit–rock interaction of a drill string under torsional vibrations. JVC/Journal of Vibration and Control, 25 (10). pp. 1663-1672.

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Official URL: http://dx.doi.org/10.1177/1077546319828245

Abstract

© The Author(s) 2019. This paper aims at constructing a stochastic model for the hysteretic behavior of the nonlinear bit–rock interaction of a drill string under torsional vibrations. The proposed model takes into account the fluctuations of the stick–slip oscillations observed during the drilling process. These fluctuations are modeled by introducing a stochastic process associated with the variations of the torque on bit, which is a function of the bit speed. The parameters of the stochastic model are calibrated with field data. The response of the proposed stochastic model, considering the random bit–rock interaction, is analyzed, and statistics related to the stability of the drill string are estimated.

Item Type:	Article
Uncontrolled Keywords:	Bit-rock stochastic interaction model, drill string dynamics, hysteretic friction, experimental identification
Depositing User:	Symplectic Admin
Date Deposited:	12 Mar 2019 11:09
Last Modified:	19 Jan 2023 00:57
DOI:	10.1177/1077546319828245
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3033892