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Différents problèmes théoriques et appliqués de transport dissipatif en milieux poreux

Abstract : The thesis concerns three independent subject areas: the dissipative transport in heterogeneous geological media; a transport problem in an underground gas reservoir; compositional segregation in reservoirs. The common point of all examined problems is the irreversible redistribution of chemical composition of a fluid in the reservoirs. The first chapter is devoted to development of a microscopic model of simultaneous mass and heat transfer in agreement with thermodynamic principles. The second chapter is dedicated to study of multi-component diffusion in a heterogeneous medium. This study aims an application to transport phenomena in hydrocarbon reservoirs characterized firstly by diversity of transported substances (several components + heat) and their interaction (in Onsager's meaning) and secondly by anisotropy of medium where they take place. The third chapter is dedicated to analytical study of underground gas storage sweeping due to gas dissolution in aquifer. In the fourth chapter the same problem (gas sweeping) was studied numerically in a less idealized approach using finite element method. The fifth chapter is dedicated to study of forced convection taking place in the reservoirs where the temperature gradient and gravity force are not collinear. This convection represents an element of the thermo-gravitational component segregation employed in industry (thermo-gravitational columns) and can take place in underground reservoirs
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Yuri Mizyakin. Différents problèmes théoriques et appliqués de transport dissipatif en milieux poreux. Autre. Institut National Polytechnique de Lorraine, 2010. Français. ⟨NNT : 2010INPL040N⟩. ⟨tel-01748831⟩



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