Drilling vibration reduction via attractive ellipsoid method
Drilling vibration reduction via attractive ellipsoid method
复制标题
通过吸引椭球法降低钻井振动
DOI：
10.1016/j.jfranklin.2012.12.010
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
S. Mondié
中科院分区：
文献类型：
--
作者：
Belem Saldivar;S. Mondié
在钻井过程中发生的振荡构成了石油开采工业中要解决的主要问题。现场最常发生的钻井振动是扭转振动（粘滑）和轴向振动（钻头跳动）。它们可能导致设备故障，从而增加钻井操作成本。需要克服的一个重要挑战是钻柱动力学建模和有效控制器的设计，以减少不良行为。本文介绍了一种有效描述钻井系统振荡行为的中性型时滞模型。它大大简化了系统分析和仿真。吸引的椭球方法使我们能够开发一个有效的战略稳定控制器的综合保证消除钻井振荡。事实上，这种方法可以应用于任何系统描述的时间延迟方程有界干扰。通过仿真验证了该方法的有效性。
The oscillations occurring during the drilling process constitute a major problem to solve in the oil extraction industry. Drilling vibrations most frequently occurring in the field are torsional (stick-slip) and axial (bit-bounce). They may cause equipment failures which increase drilling operation costs. An important challenge to overcome is the modeling of drillstring dynamics and the design of effective controllers to reduce undesirable behavior. This paper introduces a neutral-type time-delay model that effectively describes the oscillatory behavior in the drilling system. It simplifies significantly the system analysis and simulation. The attractive ellipsoid method allows us develop an efficient strategy for the stabilizing controllers synthesis guaranteeing the elimination of drilling oscillations. In fact, this methodology can be applied to any system described by a time-delay equation subject to bounded disturbances. The effectiveness of this approach is validated through simulations.