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Thermodiffusion: From microgravity experiments to the initial state of petroleum reservoirs

par Touzet, Mathieu;Galliero, Guillaume;Lazzeri, Veronique;Saghir, Ziad;Montel, François;Legros, Jean Claude
Référence Comptes rendus. Mécanique, 339, 5, page (318-323)
Publication Publié, 2011-05

Article révisé par les pairs

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Résumé :

Microgravity experiments and molecular dynamics simulations have been performed to study thermodiffusion of ternary mixtures composed of methane, n-butane and n-dodecane in petroleum reservoirs conditions. The simulations showed in both cases that methane and n-butane tend to migrate towards the hot side while n-dodecane tends to migrate towards the cold side. Some of the experimental results showed the same trend but with much larger amplitudes. Finally, a simulation of an idealized fluid column composed of one of the ternary mixture emphasizes that thermodiffusion can have a large impact on the vertical distribution of the components in a petroleum reservoir. © 2011 Académie des sciences.