Sliding-mode control of a multi-DOF oilwell drillstring with stick-slip oscillations

Eva M. Navarro-López; Domingo Cortés

doi:10.1109/ACC.2007.4282198

Sliding-mode control of a multi-DOF oilwell drillstring with stick-slip oscillations

Eva M. Navarro-López, Domingo Cortés

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

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Abstract

A dynamical sliding-mode control is used to avoid different bit sticking problems present in a conventional vertical oilwell drillstring. The control goal of driving the rotary velocities of drillstring components to a constant positive value is achieved by means of this control. A discontinuous lumped-parameter torsional model of four degrees of freedom is considered. This model allows to describe drill pipes and drill collars behavior. The closed-loop system has two discontinuity surfaces. One of them gives rise to self-excited bit stick-slip oscillations and bit sticking phenomena. The other surface is introduced to accomplish the control goal despite variations in the weight on the bit (key to the dynamics) and other system parameters. ©2007 IEEE.

Original language	English
Title of host publication	Proceedings of the American Control Conference\|Proc Am Control Conf
Pages	3837-3842
Number of pages	5
DOIs	https://doi.org/10.1109/ACC.2007.4282198
Publication status	Published - 2007
Event	2007 American Control Conference, ACC - New York, NY Duration: 1 Jul 2007 → …

Conference

Conference	2007 American Control Conference, ACC
City	New York, NY
Period	1/07/07 → …

Keywords

Discontinuous systems
Dry friction
Nonlinear control
Oilwell drillstrings
Sliding motions

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10.1109/ACC.2007.4282198

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title = "Sliding-mode control of a multi-DOF oilwell drillstring with stick-slip oscillations",

abstract = "A dynamical sliding-mode control is used to avoid different bit sticking problems present in a conventional vertical oilwell drillstring. The control goal of driving the rotary velocities of drillstring components to a constant positive value is achieved by means of this control. A discontinuous lumped-parameter torsional model of four degrees of freedom is considered. This model allows to describe drill pipes and drill collars behavior. The closed-loop system has two discontinuity surfaces. One of them gives rise to self-excited bit stick-slip oscillations and bit sticking phenomena. The other surface is introduced to accomplish the control goal despite variations in the weight on the bit (key to the dynamics) and other system parameters. {\textcopyright}2007 IEEE.",

keywords = "Discontinuous systems, Dry friction, Nonlinear control, Oilwell drillstrings, Sliding motions",

author = "Navarro-L{\'o}pez, {Eva M.} and Domingo Cort{\'e}s",

year = "2007",

doi = "10.1109/ACC.2007.4282198",

language = "English",

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T1 - Sliding-mode control of a multi-DOF oilwell drillstring with stick-slip oscillations

AU - Navarro-López, Eva M.

AU - Cortés, Domingo

PY - 2007

Y1 - 2007

N2 - A dynamical sliding-mode control is used to avoid different bit sticking problems present in a conventional vertical oilwell drillstring. The control goal of driving the rotary velocities of drillstring components to a constant positive value is achieved by means of this control. A discontinuous lumped-parameter torsional model of four degrees of freedom is considered. This model allows to describe drill pipes and drill collars behavior. The closed-loop system has two discontinuity surfaces. One of them gives rise to self-excited bit stick-slip oscillations and bit sticking phenomena. The other surface is introduced to accomplish the control goal despite variations in the weight on the bit (key to the dynamics) and other system parameters. ©2007 IEEE.

AB - A dynamical sliding-mode control is used to avoid different bit sticking problems present in a conventional vertical oilwell drillstring. The control goal of driving the rotary velocities of drillstring components to a constant positive value is achieved by means of this control. A discontinuous lumped-parameter torsional model of four degrees of freedom is considered. This model allows to describe drill pipes and drill collars behavior. The closed-loop system has two discontinuity surfaces. One of them gives rise to self-excited bit stick-slip oscillations and bit sticking phenomena. The other surface is introduced to accomplish the control goal despite variations in the weight on the bit (key to the dynamics) and other system parameters. ©2007 IEEE.

KW - Discontinuous systems

KW - Dry friction

KW - Nonlinear control

KW - Oilwell drillstrings

KW - Sliding motions

U2 - 10.1109/ACC.2007.4282198

DO - 10.1109/ACC.2007.4282198

M3 - Conference contribution

SN - 1424409888

SN - 9781424409884

SP - 3837

EP - 3842

BT - Proceedings of the American Control Conference|Proc Am Control Conf

T2 - 2007 American Control Conference, ACC

Y2 - 1 July 2007

ER -

Sliding-mode control of a multi-DOF oilwell drillstring with stick-slip oscillations

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