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Modélisation cinématique réversible 3D de structures géologiques plissées et faillées

Abstract : Basin modeling is one of the important objective in petroleum exploration. Its goal is to understand the evolution of the petroleum potential in space and time. The understanding is done in two steps : an inverse step, called restoration to describe the evolution of the geometry through time, a direct step which simulates fluid transfers through geological time steps. In this report, we focus our attention on the kinematic reversible problem. Our approach integrates in the building of the model some geometrical or geological rules as soon as possible to help the restoration, and the simulation step. To do that, we consider some simplified trigonometric laws for the deformation and the displacement of the 3D blocks. Vertical shear and flexural slip can be considered, for each strata independently, in function of the type of formation. In the first part of the report, we improve the geometry of the fault surface in introducing a thread criterion which correct the geometry for the slipping between 2 blocks. In a second part, the prototype has been validated on different examples of growing complexity in the reversible way. This work has emphasized the necessity to work up-stream in the building of the model to make easier the restoration and deformation of the model through geological times.
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Contributor : Natacha Gibergues <>
Submitted on : Friday, November 20, 2009 - 11:05:19 AM
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  • HAL Id : tel-00433804, version 1



Natacha Gibergues. Modélisation cinématique réversible 3D de structures géologiques plissées et faillées. Sciences de la Terre. Université Joseph-Fourier - Grenoble I, 2007. Français. ⟨tel-00433804⟩



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