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Stress effects on the relative permeabilities of tight sandstones |
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| Institution: | 1. ENGIE EPI, 1, place Samuel-de-Champlain, 92930 La Défense cedex, France;2. GeM, UMR CNRS 6183, École centrale de Nantes, Université de Nantes, 44600 Saint-Nazaire, France;3. Laboratoire de mécanique de Lille (LML) UMR 8107, École centrale de Lille, CS20048, 59651 Villeneuve-d’Ascq cedex, France |
| Abstract: | This note deals with the study of stress-sensitive relative permeability experimentally observed in low permeable sandstones. These sandstones are made up of quartz grains surrounded by permeable interfaces between grains and pores. A micromechanical model of relative permeability behaviour under loading highlights the role of the closure of interfaces. Morphological models adapted to permeable sandstones show conversely that the relative permeabilities do not depend on the loading. |
| Keywords: | Relative permeabilities Loading effect Sandstones Homogenisation |
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