Gas entry through water-saturated argillite: experimental and numerical approaches
type de publication |
communication internationale avec actes publiés |
date de publication |
28-06-2011 |
auteur(s) |
Duveau Gilles; M'Jahad Sofia; Davy Catherine A.; Skoczylas Frédéric; Shao Jian-Fu; Talandier Jean; Granet Sylvie |
| |
conférence |
45th US Rock Mechanics / Geomechanics Symposium 2011 |
dates |
de 26-06-2011 à 29-06-2011 |
lieu |
San Francisco, California, USA |
nom des actes |
Proceedings of the American Rock Mechanics Association's 45th U.S. Rock Mechanics / Geomechanics Symposium |
| |
|
Sous presse |
résumé |
The aim of the present study is to investigate the gas migration properties (gas breakthrough pressure) of fully water-saturated COx argillite. Experimentally, at the laboratory scale, gas breakthrough pressure (GBP) is assessed rather than gas entry, by accurately detecting gas presence on the downstream side of a sample under hydrostatic stress and subjected to slowly increasing gas pressure on its upstream side. Numerically, the GBP text is simulated using a unidimensional coupled finite element model, which accounts for gas dissolution, diffusion in pore water and advection. Mechanical behaviour is described within Biot’s effective stress theory. The aim of the modeling work is to select the set of parameters, which adequately describe the laboratory experiment, in order to use them in further repository structure FE modelling. |
mots clés |
argillite, gas entry pressure, gas breakthrough pressure, FE modelling |
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