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An adaptive finite element model for well-bore breakout simulation

Abstract : A finite element formulation is proposed and implemented for analysing the stability of excavated wells using the DiMaggio-Sandler constitutive elastoplastic model with a typical carbonate reservoir configuration. The quality of the finite element approximation is ensured by applying smooth curved elements adapted to the well-bore geometry, and h − p adaptive finite element meshes in the plastic zone. General purpose procedures are defined to transfer the elastoplastic deformation history to newly created integration points. A breakout damage criterion is proposed based on the second invariant of the deviatoric plastic deformation tensor. This damage criterion is used to apply a mesh movement algorithm to represent material collapse. The automatic successive application of the breakout damage criterion results in elliptical realistically looking geometries obtained in experiments reported in the literature.
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Submitted on : Monday, August 20, 2018 - 3:48:57 PM
Last modification on : Friday, August 5, 2022 - 11:41:02 AM
Long-term archiving on: : Wednesday, November 21, 2018 - 1:28:03 PM


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  • HAL Id : hal-01858387, version 1



Diogo L Cecílio, Philippe R B Devloo, Sonia M. Gomes, Erick S R Santos. An adaptive finite element model for well-bore breakout simulation. 2018. ⟨hal-01858387⟩



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