The effect of dynamical parameters on precession in rotary drilling

A. Théron; E. De Langre; C. Putot

doi:10.1115/1.1383974

The effect of dynamical parameters on precession in rotary drilling

A. Théron
, E. De Langre
, C. Putot

Research output: Contribution to journal › Article › peer-review

Abstract

Precession, which is the rolling motion of the drillstring on the walls of the borehole, is investigated by considering the various possible motions of a rotating disk in a circular hole. Due to the simplicity of the model, closed-form results are derived on the stability of precession and on the evolution of impacting motions towards precession. It is found that increasing coefficients of friction and contact damping have a favoring effect on precession, while the stiffness and damping of the drillstring bending mode have an opposing effect.

Original language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Journal of Energy Resources Technology, Transactions of the ASME
Volume	123
Issue number	3
DOIs	https://doi.org/10.1115/1.1383974
Publication status	Published - 1 Jan 2001

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10.1115/1.1383974

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title = "The effect of dynamical parameters on precession in rotary drilling",

abstract = "Precession, which is the rolling motion of the drillstring on the walls of the borehole, is investigated by considering the various possible motions of a rotating disk in a circular hole. Due to the simplicity of the model, closed-form results are derived on the stability of precession and on the evolution of impacting motions towards precession. It is found that increasing coefficients of friction and contact damping have a favoring effect on precession, while the stiffness and damping of the drillstring bending mode have an opposing effect.",

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AU - De Langre, E.

AU - Putot, C.

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N2 - Precession, which is the rolling motion of the drillstring on the walls of the borehole, is investigated by considering the various possible motions of a rotating disk in a circular hole. Due to the simplicity of the model, closed-form results are derived on the stability of precession and on the evolution of impacting motions towards precession. It is found that increasing coefficients of friction and contact damping have a favoring effect on precession, while the stiffness and damping of the drillstring bending mode have an opposing effect.

AB - Precession, which is the rolling motion of the drillstring on the walls of the borehole, is investigated by considering the various possible motions of a rotating disk in a circular hole. Due to the simplicity of the model, closed-form results are derived on the stability of precession and on the evolution of impacting motions towards precession. It is found that increasing coefficients of friction and contact damping have a favoring effect on precession, while the stiffness and damping of the drillstring bending mode have an opposing effect.

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JO - Journal of Energy Resources Technology, Transactions of the ASME

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ER -

The effect of dynamical parameters on precession in rotary drilling

Abstract

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