Titlebook: Analysis and Control of Oilwell Drilling Vibrations; A Time-Delay Systems Martha Belem Saldivar Márquez,Islam Boussaada,Silv Book 2015 Spri

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Neutral-Type Time-Delay Systems: Theoretical Backgrounde wide range of existing tools for the stability analysis of time-delay systems. This chapter provides the main theoretical elements to address the analysis of the qualitative dynamic response and stability of the drilling system in the framework of NFDE.

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Book 2015s of the system-dynamic response and the elimination of the most damaging drill string vibration modes affecting overall perforation performance: stick-slip (torsional vibration) and bit-bounce (axial vibration). The text is organized in three parts..The first part, Modeling, presents lumped- and di

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https://doi.org/10.1007/978-3-7091-2361-4gnal. Finally, a novel technique to reduce the stick-slip and bit-bounce is introduced. Based on the bifurcation analysis of the drilling system, a pair of low-order controllers aimed at eliminating axial and torsional coupled vibrations are designed: delayed proportional and delayed proportional-in

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,Bauausführung und Anwendung der Brunnen,ngular and axial velocities of the drilling bit to follow a constant reference path, a pair of controllers aimed at tackling the steering problem is designed. Simulation results show that the flatness-based feedback controllers, allowing an exponential convergence of the system trajectories, accurat