Équilibre thermodynamique - The Third French

Measurements of the chemico-
osmotic efficiency coefficient in
the Callovo-Oxfordian shale of
the Paris basin
ROUSSEAU-GUEUTIN, P.(1), de GREEF, V.(2), CRUCHAUDET, M.(3),
GONCALVES, J.(1), COSENZA, P.(1) and VIOLETTE, S.(1)
French-Serbian European Summer University 16-25 October 2006 : Renewable Energy Sources and
Environnement-Multidisciplinary Aspect
(1) UMR SISYPHE, Université Pierre et Marie Curie, Boite 125, 4 Place Jussieu, 75252 PARIS Cedex 5
(2) LMS, Laboratoire de Mécanique des Solides, Ecole Polytechnique, 91128 PALAISEAU cedex
(3) ANDRA, Laboratoire de recherche souterrain de Meuse/Haute-Marne, RD 960, 55290 BURE
email : [email protected]

What is the Callovo-Oxfordian clay?

Apparent hydraulic head (m ASL)
Deepth (m/soil)
Overpressures

•More explications have done to explain these
overpressures:
–Desequilibrium compaction
–Oil generation
–Diagenesis
– …
•More recently an osmotic origin has been proposed
(Neuzil, 2000, Altmann et al., 2005)
Can you explain these overpressures by an osmotic
process?
Geological origins of the
overpressures

Main parts of the subject
The modelling hypothesis :
- thermodynamic equilibrium
-dynamic coupled flux
Field scale experiments
(underground
laboratory of Bure) Sample scale experiments
Scale effect
Validation of the modelisation
hypothesis