D-OSKIL: A New Mechanism for Controlling Stick-Slip Oscillations in Oil Well Drillstrings

Canudas‐de‐Wit, Carlos; Rubio, Francisco; Corchero, M. A. Diaz

doi:10.1109/tcst.2008.917873

Cited by 74 publications

(73 citation statements)

References 35 publications

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“…The literature using the lumped-parameter model for control purpose is vast, e.g. [4,5,6,7,8]. Navarro-López and Cortés [4] used a generic lumped-parameter model to analyze self-excited stick-slip oscillations at the drill bit by identifying the ranges of key drilling parameters for which non-desired torsional oscillations can be avoided.…”

Section: Introductionmentioning

confidence: 99%

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Suppressing stick‐slip oscillations in underactuated multibody drill‐strings with parametric uncertainties using sliding‐mode control

Liu

2015

IET Control Theory & Applications

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This paper is a postprint of a paper submitted to and accepted for publication in IET Control Theory and Applications and is subject to Institution of Engineering and Technology Copyright. AbstractStabilization of multibody drill-strings which exhibit stick-slip oscillations is studied in this paper from the point of view of underactuated system. The model has one control torque input acting on the rotary table from the land surface and multi-degree-of-freedom downhole parts to be controlled. Three motion regimes of the model including bit sticking, stick-slip oscillation, and rotating at a constant speed are identified and their equilibria are analyzed accordingly. The control objective of the system is to avoid the undesired bit sticking and stick-slip oscillation while tracking a desired angular velocity. Three slidingmode controllers are studied for the drill-string with estimated physical parameters. The stabilities of the proposed controllers are proved by using the Lyapunov direct method ensuring that any trajectory of the system can reach and stays thereafter on the predesigned sliding surface where the desired equilibrium is asymptotically stable. Extensive simulation results are given to demonstrate the effectiveness of the proposed controllers and their robustness to parametric uncertainties.

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Section: Introductionmentioning

confidence: 99%

“…In [5], Navarro-López and Licéaga-Castro proposed a dynamical sliding-mode controller to avoid different bit sticking problems appearing in the model. Canudas-de-Wit et al [6] proposed to use the weight on bit (WOB)…”

Section: Introductionmentioning

confidence: 99%

Suppressing stick‐slip oscillations in underactuated multibody drill‐strings with parametric uncertainties using sliding‐mode control

Liu

2015

IET Control Theory & Applications

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“…It was found that increasing the frictional torque, i.e., the reaction torque, increased all major attributes of stick-slip, such as the period of stick phase and the amplitude in the burst of speed exhibited immediately after the drill-bit exits the stick phase. Since frictional torque on the drill-bit is a resultant of the WOB, adjusting the WOB can be used as an effective control strategy to suppress stick-slip oscillations; see, e.g., [12]. However, care must be taken as excess reduction in the WOB, and therefore, frictional torque could nullify the whole cutting process in the bit-rock interactions.…”

Section: Discussionmentioning

confidence: 99%

“…In the present work, we will consider the lumped-parameter model shown in Fig. 2, which has been studied in the past by various authors; see, e.g., [10][11][12][13]. The generalized lumped-parameter model can be written in a single-input and multi-output form as follows Fig.…”

Section: Introductionmentioning

confidence: 99%

“…A laboratory investigation of drill-string vibrations was carried out by Khulief and AI-Sulaiman [18] by using a magnetic tension brake to simulate stick-slip oscillations. Lu et al [19] conducted experimental investigations using the D-OSKIL [12] mechanism for mitigation of stick-slip oscillations in oil well drill-strings. An asymmetric vibration damping tool was developed and tested using a small-scale experimental rig in [20].…”

Section: Introductionmentioning

confidence: 99%

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Numerical and experimental studies of stick–slip oscillations in drill-strings

Liu

Chávez

et al. 2017

Nonlinear Dyn

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The cyclic nature of the stick-slip phenomenon may cause catastrophic failures in drillstrings or at the very least could lead to the wear of expensive equipment. Therefore, it is important to study the drilling parameters which can lead to stickslip, in order to develop appropriate control methods for suppression. This paper studies the stick-slip oscillations encountered in drill-strings from both numerical and experimental points of view. The numerical part is carried out based on path-following methods for nonsmooth dynamical systems, with a special focus on the multistability in drill-strings. Our analysis shows that, under a certain parameter window, the multistability can be used to steer the response of the drill-strings from a sticking equilibrium or stick-slip oscillation to an equilibrium with constant drill-bit rotation. In addition, a small-scale downhole drilling rig was implemented to conduct a parametric study of the stick-slip phenomenon. The parametric study involves the use of two flexible shafts with varying mechanical properties to observe the effects that would have on stick-slip during operation. Our experimental results demonstrate that varying some of the mechanical properties of the drill-string could in fact control the nature of stick-slip oscillations.

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Robust and nonlinear control literature survey (No. 10)

2009

Intl J Robust & Nonlinear

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In order to keep the readers up-to-date, the journal will contain a list of recently published journal articles relevant to the fields of robust and nonlinear control six times a year. This list is comp iled from a wide range of journals. Please note that even though the list has been broadly categorized, these classifications are by no means strict, and are there to assist the reader. Please also note that inclusion in the list is not an endorsement of a paper's quality. If you have any suggestions or comments, please e-mail Leonardo Giovanini at lgiovanini@fich.unl.edu.ar.

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D-OSKIL: A New Mechanism for Controlling Stick-Slip Oscillations in Oil Well Drillstrings

Cited by 74 publications

References 35 publications

Suppressing stick‐slip oscillations in underactuated multibody drill‐strings with parametric uncertainties using sliding‐mode control

Suppressing stick‐slip oscillations in underactuated multibody drill‐strings with parametric uncertainties using sliding‐mode control

Numerical and experimental studies of stick–slip oscillations in drill-strings

Robust and nonlinear control literature survey (No. 10)

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