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Communication Dans Un Congrès Année : 2014

Mathematical modeling of horizontal drillstrings subjected to friction and shocks effects

Résumé

During the process of oil prospection, an equipment called drillstring is used to drill the soil. This device presents a three-dimensional nonlinear dynamics subjected to e ects of friction and shock. This work aims to analyze the nonlinear dynamics of a drillstring in horizontal con guration. For this purpose, the drillstring is modeled as a beam theory with rotatory inertia and shear deformation of the the cross section, undergoing large displacements. This model also takes into account the e ects of friction and shock, induced by the lateral impacts between the drillstring and the borehole wall. The model equations are discretized using the Galerkin/ nite element method, and the resulting initial value problem is integrated using the Newmark method. Numerical simulations are conducted to investigate the e ects of the lateral shock in nonlinear dynamic of the column.
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Dates et versions

hal-01066528 , version 1 (21-09-2014)

Identifiants

  • HAL Id : hal-01066528 , version 1

Citer

A. Cunha Jr, Christian Soize, R. Sampaio. Mathematical modeling of horizontal drillstrings subjected to friction and shocks effects. XXXV Congresso de Matematica Aplicada e Computacional, CNMAC 2014, Sep 2014, Natal, RN, Brazil. pp.1-7. ⟨hal-01066528⟩
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