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Integration of uncertainty and definition of critical thresholds for CO2 storage risk assessment

Abstract : The main goal of the thesis is to define how the uncertainty can be accounted for in the process of riskassessment for CO2 storage and to quantify by means of numerical models the scenarii of leakage by lateralmigration and through the caprock. The chosen scenarii are quantified using the system modeling approachfor which ad-hoc predictive numerical models are developed. A probabilistic parametric uncertaintypropagation study using polynomial chaos expansion is performed. Matters of spatial variability are alsodiscussed and a comparison between homogeneous and heterogeneous representations of permeability isprovided.
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Tatiana Okhulkova. Integration of uncertainty and definition of critical thresholds for CO2 storage risk assessment. Risques. Université Paris-Saclay, 2015. English. ⟨NNT : 2015SACLC021⟩. ⟨tel-02122811⟩

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