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Drill-String Dynamics: Reduced-Order Models [PDF]
Volume 10: Mechanical Systems and Control, Parts A and B, 2009 Research efforts are underway to model and study the dynamics of a drill string, and preliminary results are presented in this work. The dynamics of a drill string system has non-smooth characteristics. Moreover, the drill string system dynamics exhibits qualitative changes with respect to the rotation speed of the drill string and friction ...
Chien-Min Liao +2 more
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An Integrated Model for Drill-String Dynamics [PDF]
Journal of Sound and Vibration, 1999 The vibrational states experienced by the active components of a drilling assembly such as that found in the oil or gas industry are discussed in the context of an integrated mathematical model. The work is motivated by the need to understand the complex vibrational states that such a system can exhibit in order to better control their constructive and
Tucker, Robin, Wang, Charles
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Drill-String Dynamics: Reduced-Order Models and Experimental Studies [PDF]
Journal of Vibration and Acoustics, Transactions of the ASME, 2011 In this article, reduced-order models of a drill-string system are developed, the predictions of these models are studied, and qualitative comparisons are made with experimental studies.
Chien-Min Liao +2 more
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Dynamic Buckling Characteristics of Drill String in Horizontal Wells
International Journal of Structural Stability and Dynamics, 2023Buckling may cause drill string damage or even drilling failure. For the 3[Formula: see text]000-m-long horizontal section drill string, a simplified analysis model of drill string in horizontal well is established, and the dynamic response results of axial displacement, angular displacement and contact force are obtained.
Jialin Tian +4 more
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Nonlinear Model for Dynamic Behavior of Drill-String
Engineering Technology Conference on Energy, Parts A and B, 2002This article is devoted to the study of the contact between the drill-string and the well during drilling operations. The study focuses on the Bottom-Hole-Assembly (BHA), which is submitted to compression. The work is motivated by the need to understand the complex behavior of such a system, in order to improve control their constructive and ...
Melakhessou, Hayet +2 more
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Hysteretic bit/rock interaction model to analyze the torsional dynamics of a drill string [PDF]
Mechanical Systems and Signal Processing, 2018 The present paper proposes a novel hysteretic (non-reversible) bit/rock interaction model for the torsional dynamics of a drill string. Non-reversible means that the torque-on-bit depends not only on the bit speed, but also on the bit acceleration ...
A Batou, Thiago G Ritto
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Experimental Evaluations of Drill Bit and Drill String Dynamics
SPE Annual Technical Conference and Exhibition, 1994Abstract Laboratory and field experiments were performed to investigate the dynamics of the drill bit and drill string. Laboratory results for Anti-whirl and conventional polycrystalline diamond compact (PDC) bits showed that vibrations of the former were an order of magnitude less than those of the latter.
M. W. Dykstra +3 more
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Reliability Analysis of the Dynamics of a Horizontal Drill-String
2014Nowadays directional drilling, such as horizontal drilling, is very common. This chapter deals with the reliability analysis of a horizontal drill-string dynamics. A stochastic probabilistic computational model is considered, where a bar model (tension/compression) is used for the drill-string, and the system is discretized by means of the finite ...
T. G. Ritto, Rubens Sampaio
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