Experimental device for chemical osmosis measurement on natural clay-rock samples maintained at in situ conditions: Implications for formation pressure interpretations

Rousseau-Gueutin, Pauline; Greef, Vincent de; Gonçalvès, Julio; Violette, Sophie; Chanchole, S.

doi:10.1016/j.jcis.2009.04.092

Cited by 27 publications

(41 citation statements)

References 31 publications

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“…Therefore, this higher pressure in the clay-rock Figure 6. (a) Experimental design for sample-scale osmotic experiments [Rousseau-Gueutin et al, 2009]. A cylindrical sample where a central hole is drilled is placed in a triaxial press.…”

Section: Implications For Fluid Flowmentioning

confidence: 99%

What is the significance of pore pressure in a saturated shale layer?

Gonçalvès

Rousseau-Gueutin

Marsily

et al. 2010

Water Resources Research

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International audienceElectrostatic interactions, associated with negatively charged surfaces of clay minerals, produce a so-called "disjoining pressure" when diffuse layers overlap, i.e., at low porosity. Disjoining pressure is the pressure difference between the water in the clay pore space and that in a bulk solution at the same depth. Another widely used concept in clay-rocks is the "swelling pressure." It corresponds in fact to the macroscopic average of the disjoining pressure. This study proposes to determine the value of the swelling pressure of a natural material by a simple volume-averaging approach of the disjoining pressure, calculated for each clay mineral present in the material. The swelling pressure, which is dependent on the salinity of the pore fluid, is introduced into a hydrochemomechanical coupling, yielding a more general pressure diffusion equation. The results are compared to swelling pressure measurements for natural shale samples. The implications of this swelling pressure for water pressure measurements in natural formations are also discussed

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Section: Implications For Fluid Flowmentioning

confidence: 99%

What is the significance of pore pressure in a saturated shale layer?

Gonçalvès

Rousseau-Gueutin

Marsily

et al. 2010

Water Resources Research

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“…After the pressure rise, the concentration difference decreases due to ionic diffusion, and a return fluid flow from the high-to the low-concentration reservoir creates a long-lasting pressure decrease (controlled by the diffusion). The interpretation is more complex and requires the solution of Eqns (8.18) and (8.19), combined with mass conservation equations (see Rousseau-Gueutin et al, 2009). Recently, an alternative experimental device limiting the fluid leaks was developed to improve the accuracy of osmotic efficiency measurements (Rousseau-Gueutin et al, 2009).…”

Section: When Off-diagonal Terms Are Not Negligible: Formalism and Exmentioning

confidence: 99%

“…The interpretation is more complex and requires the solution of Eqns (8.18) and (8.19), combined with mass conservation equations (see Rousseau-Gueutin et al, 2009). Recently, an alternative experimental device limiting the fluid leaks was developed to improve the accuracy of osmotic efficiency measurements (Rousseau-Gueutin et al, 2009). A cylindrical sample several centimeters in diameter and height was placed under isotropic confinement.…”

Section: When Off-diagonal Terms Are Not Negligible: Formalism and Exmentioning

confidence: 99%

See 1 more Smart Citation

Semipermeable Membrane Properties and Chemomechanical Coupling in Clay Barriers

Gonçalvès¹,

Adler²,

Cosenza³

et al. 2015

Natural and Engineered Clay Barriers

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“…The numerical model given hereafter is derived from a previous model developed for the interpretation of a chemo-osmotic response subsequent to a chemical pulse [22,23]. Couplings associated with temperature were implemented in this model.…”

Section: A Priori Simulations Of In Situ Thermo-osmotic Experimentsmentioning

confidence: 99%