Institut des Sciences de la Terre d'Orléans
ISTO, UMR 7327,
Univ Orléans, CNRS, BRGM, OSUC, F-45071 Orléans, France
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Séminaire invité de Hang Deng (LBNL): Geochemical Alteration of Fractures in Heterogeneous Porous Media : A Pore- and Core-Scale Perspective
Geochemical Alteration of Fractures in Heterogeneous Porous Media: A Pore- and Core-Scale Perspective Hang Deng Energy Geosciences Division, Earth & Environmental Sciences Area, Lawrence Berkeley National Laboratory Fractures are the preferential flow pathways in the subsurface environment, and are subject to alteration caused by coupled geochemical-physical processes that are triggered by mineral-fluid interactions. Improved understanding of fracture evolution is critical for the assessment and prediction of the performance of various geological systems that are associated with subsurface energy harness and…
Voir les détails »Séminaire, Florian Osselin (GP Milieux Poreux)
Quantifying Water-Rock interactions during hydraulic fracturing from the analysis of flowback water
Voir les détails »Séminaire invité de Hannelore Derluyn, CNRS (LFCR UMR 5150, Univ Pau & Pays Adour)
Unravelling salt crystallization dynamics in rock by X-ray tomography Salt crystallization causes major weathering of building stones and landscapes, affects the salinity of soils, and the permeability of rocks. When saline fluids are present in the pore space of a material, salt crystals might precipitate upon changes in temp erature or humidity conditions, leading to salt precipitation on the surface, efflorescence, or to salt crystals precipitating in the pores, subflorescence, which might clog the pores. The confined crystal growth…
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