Field Experience with an Active Stick-Slip Prevention System

Nessjøen, Pal Jacob; Kyllingstad, Åge; D'Ambrosio, Pedro; Fonseca, Isaac; Garcia, Alexis; Lévy, Bruno

doi:10.2118/139956-ms

Cited by 13 publications

(5 citation statements)

References 2 publications

(2 reference statements)

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“…Where infinite dimensional models, such as partial or delay microstructures, can be formalized, [18], -a different modeling approach is taken from [16] and [17]. Individualization comes with infinite-dimensional models [19][20][21].…”

Section: Research Backgroundmentioning

confidence: 99%

Mitigation of Torsional Vibrations in Drilling Systems using Adaptive Nonlinear Control System

SUBA*,

D.Eee.

2020

IJITEE

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The reason for this work is to plan a robust yield feedback control way to deal with dispense with torque stick-slip vibrations in boring frameworks. Current industry controllers generally neglect to dispose of stick-slip vibrations, particularly when different torque flex modes assume a job in maniacal assault. In terms of build controller production, a real trainingstring system performs a multi-level model work such as torque mechanics. The proposed controller design is artfully distorted at optimizing the stability with respect to the uncertainty of the nonlinear bit-rock interaction. Based on heroes and intentions. Besides, a closed loop strength examination of the nonlinear preparing string model is displayed. This controller structure system offers a few points of interest contrasted with existing controllers. To begin with, just surface estimations are utilized, barring the requirement for entire estimations underneath it. Second, multi-level training-string dynamics are effectively handled in ways to access state-training controllers. Third, stability is explicitly provided with respect to bit-rock contact uncertainty and closed-loop performance specifications include controller design. The results of the study report confirm that stick-slip vibrations are actually eliminated in realistic drilling scenarios using a controller designed to achieve this state-ofcontrol control.

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Section: Research Backgroundmentioning

confidence: 99%

Mitigation of Torsional Vibrations in Drilling Systems using Adaptive Nonlinear Control System

SUBA*,

D.Eee.

2020

IJITEE

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“…torsional resonance modes play a role in the onset of stickslip oscillations [18], [19]. A different modeling approach is taken in [11] and [20]- [25], where infinite-dimensional models, i.e., formulated in terms of partial or delay differential equations, are considered.…”

Section: Mitigation Of Torsional Vibrations In Drillingmentioning

confidence: 99%

Mitigation of Torsional Vibrations in Drilling Systems: A Robust Control Approach

Vromen

Dai

Wouw

et al. 2019

IEEE Trans. Contr. Syst. Technol.

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“…Said from a software control system perspective; the top drive's speed set point is moved from the surface down to the bit to minimize the RPM oscillations downhole. The efficacy of such a system has been extensively documented in recent years (Nessjoen 2011, Ertas 2013, Runia 2013, Attar 2014, Efteland 2014. The stick-slip software in this paper is based on Kyllingstad (2009).…”

Section: Surface Stick-slip Mitigation Systemsmentioning

confidence: 99%

The Significance of Pro-active Online Monitoring with Stick-slip Mitigation

Efteland

Creegan

Jordan

et al. 2015

Day 3 Wed, November 11, 2015

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Stick-slip is recognized as a major cause of drilling inefficiency and non-productive time (NPT) due to excessive bit wear, premature tool failure, drill string fatigue, and poor rate of penetration. The drilling industry is suffering from high well construction cost and are moving slowly toward automated well manufacturing. An important strategy is to reduce NPT, improve safety, and increase efficiency. Reduction of downhole vibration addresses all these issues.Surface based stick-slip mitigation systems have been available to the drilling industry for decades and are very effective when used correctly. However, history has shown that rig crews only use a fraction of its capability. The efficiency is trending downwards. There is potential for large performance gains with small changes to drilling practices. Real-time monitoring of selected key metrics showed to maximize the use of this tool and go beyond the limiters caused by stick-slip vibrations.The purpose of this paper is to inform operators and contractors about the positive performance effect with a remote monitoring system. It demonstrates a vibration mitigation tool significantly improved when guided by a remote operating center and enabled the user to stretch the limiters even more. Monitoring ensured correct tuning of the mitigation tool, correct use and identified problems before the rig saw it. Once the rig crew was comfortable with the new technique, they consistently drilled smoother in a stick-slip free environment. The system allowed more weight on bit without inducing further vibrations. It is possible to drill faster, but more importantly reduce the number of expensive bit/BHA trips to replace broken tools. Five case examples are discussed.

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Field Experience with an Active Stick-Slip Prevention System

Cited by 13 publications

References 2 publications

Mitigation of Torsional Vibrations in Drilling Systems using Adaptive Nonlinear Control System

Mitigation of Torsional Vibrations in Drilling Systems using Adaptive Nonlinear Control System

Mitigation of Torsional Vibrations in Drilling Systems: A Robust Control Approach

The Significance of Pro-active Online Monitoring with Stick-slip Mitigation

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