Suppression of axial-torsional vibrations in drilling system described by neutral-type delay differential equations

S. Tashakori; Gholamreza Vossoughi; Hassan Zohoor; Nathan van de Wouw

Suppression of axial-torsional vibrations in drilling system described by neutral-type delay differential equations

S. Tashakori, Gholamreza Vossoughi, Hassan Zohoor, Nathan van de Wouw

Dynamics and Control

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

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Abstract

Vibrations in deep drilling systems lead to efficiency deterioration and may even cause the system failure. In this paper, a controller is designed aiming at mitigation of these vibrations, which is based on a neutral-type time delay model that represents distributed axial and torsional dynamics. First, the stability of the associated linearized dynamics is analyzed using a spectral approach. Furthermore, the open-loop system is shown to be stabilizable by state feedback which supports subsequent controller design. An optimization-based continuous pole placement technique has been employed to design a stabilizing controller, which mitigates steady-state drill-string vibrations. The effectiveness of the controller is shown in a representative case study.

Original language	English
Title of host publication	Proceedings of the First International Nonlinear Dynamics Conference (NODYCON2019)
Publication status	Published - 2019
Event	NODYCON 2019 : First International Nonlinear Dynamics Conference - Rome, Italy Duration: 17 Feb 2019 → 20 Feb 2019 https://nodycon.org/2019/

Conference

Conference	NODYCON 2019 : First International Nonlinear Dynamics Conference
Country/Territory	Italy
City	Rome
Period	17/02/19 → 20/02/19
Internet address	https://nodycon.org/2019/

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title = "Suppression of axial-torsional vibrations in drilling system described by neutral-type delay differential equations",

abstract = "Vibrations in deep drilling systems lead to efficiency deterioration and may even cause the system failure. In this paper, a controller is designed aiming at mitigation of these vibrations, which is based on a neutral-type time delay model that represents distributed axial and torsional dynamics. First, the stability of the associated linearized dynamics is analyzed using a spectral approach. Furthermore, the open-loop system is shown to be stabilizable by state feedback which supports subsequent controller design. An optimization-based continuous pole placement technique has been employed to design a stabilizing controller, which mitigates steady-state drill-string vibrations. The effectiveness of the controller is shown in a representative case study.",

author = "S. Tashakori and Gholamreza Vossoughi and Hassan Zohoor and {van de Wouw}, Nathan",

year = "2019",

language = "English",

booktitle = "Proceedings of the First International Nonlinear Dynamics Conference (NODYCON2019)",

note = "NODYCON 2019 : First International Nonlinear Dynamics Conference ; Conference date: 17-02-2019 Through 20-02-2019",

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Suppression of axial-torsional vibrations in drilling system described by neutral-type delay differential equations. / Tashakori, S.; Vossoughi, Gholamreza; Zohoor, Hassan et al.

Proceedings of the First International Nonlinear Dynamics Conference (NODYCON2019). 2019.

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

TY - GEN

T1 - Suppression of axial-torsional vibrations in drilling system described by neutral-type delay differential equations

AU - Tashakori, S.

AU - Vossoughi, Gholamreza

AU - Zohoor, Hassan

AU - van de Wouw, Nathan

PY - 2019

Y1 - 2019

N2 - Vibrations in deep drilling systems lead to efficiency deterioration and may even cause the system failure. In this paper, a controller is designed aiming at mitigation of these vibrations, which is based on a neutral-type time delay model that represents distributed axial and torsional dynamics. First, the stability of the associated linearized dynamics is analyzed using a spectral approach. Furthermore, the open-loop system is shown to be stabilizable by state feedback which supports subsequent controller design. An optimization-based continuous pole placement technique has been employed to design a stabilizing controller, which mitigates steady-state drill-string vibrations. The effectiveness of the controller is shown in a representative case study.

AB - Vibrations in deep drilling systems lead to efficiency deterioration and may even cause the system failure. In this paper, a controller is designed aiming at mitigation of these vibrations, which is based on a neutral-type time delay model that represents distributed axial and torsional dynamics. First, the stability of the associated linearized dynamics is analyzed using a spectral approach. Furthermore, the open-loop system is shown to be stabilizable by state feedback which supports subsequent controller design. An optimization-based continuous pole placement technique has been employed to design a stabilizing controller, which mitigates steady-state drill-string vibrations. The effectiveness of the controller is shown in a representative case study.

M3 - Conference contribution

BT - Proceedings of the First International Nonlinear Dynamics Conference (NODYCON2019)

T2 - NODYCON 2019 : First International Nonlinear Dynamics Conference

Y2 - 17 February 2019 through 20 February 2019

ER -

Suppression of axial-torsional vibrations in drilling system described by neutral-type delay differential equations

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