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Probabilistic model for the bit-rock interaction model of a drill-string system

Abstract : In this paper a probabilistic model is proposed for the bit-rock interaction model of a drill-string system. A new strategy to take into account uncertainties in a local constitutive nonlinear equation using the nonparametric probabilistic approach is developed. The deterministic model considers the main forces that are applied to the column such as bit-rock interaction, fluid-structure interaction and impact forces. The nonlinear Timoshenko beam theory is applied and the system is discretized by means of the Finite Element Method.
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https://hal-upec-upem.archives-ouvertes.fr/hal-00692828
Contributor : Christian Soize <>
Submitted on : Tuesday, May 1, 2012 - 2:09:01 PM
Last modification on : Wednesday, February 17, 2021 - 10:42:04 AM
Long-term archiving on: : Thursday, August 2, 2012 - 2:21:48 AM

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T.G. Ritto, Christian Soize, R. Sampaio. Probabilistic model for the bit-rock interaction model of a drill-string system. COBEM 2009, 20th International Congress of Mechanical Engineering, ABCM, Nov 2009, Gramado-RS, Brazil. pp.1-10. ⟨hal-00692828⟩

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