Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Reduction of Negative Damping Effects in the Drilling Process Using Active Control
Submission Author:
Helio Cruz , SP
Co-Authors:
Helio Cruz, Marcelo A. Trindade
Presenter: Helio Cruz
doi://10.26678/ABCM.DINAME2023.DIN2023-0055
Abstract
Failures during oil extraction can have impacts on exploration costs and time, especially those caused by vibrations during the drilling phase. A proper way to reduce these detrimental failures is to design an active controller that efficiently mitigates vibrations with the constraint of using the limited amount of real-time data available in field operations. In this context, this paper proposes a novel control technique that uses a simple linear combination of measured signals and aims to counterbalance negative damping effects at the drill bit. The proposed controller is applied to a representative drill string model, modeled using the finite element method with non-regularized dry friction. The particular aspects regarding the application of the proposed controller for the drill string problem, i.e., reformulation of the equations of motion as a stabilization problem, determination of the output matrix and linearization are addressed. Simulations indicate that the proposed controller presents remarkable robustness regarding parameter variations, while still maintaining good nominal performance.
Keywords
drill-string vibrations, stick-slip, negative damping, output feedback, Active control
