Cel Carbon capture and storage in geological formations has been proposed in the last ten years to reduce the emissions of CO2 to the atmosphere. Geological storage consists in injecting supercritical CO2 into deep aquifers so that it remains trapped under a low permeability caprock. At the injection pressure, CO2 solubility is high and dissolution is controlled by diffusion and dispersion. CO2 saturated brine is highly acidic and will dissolve the rock, increasing its permeability, but also reducing its strength. Depending on chemical conditions, other minerals may precipitate, including carbonates, which effectively induce a mineralization of CO2. Eventually, after injection stops, a sizable amount of CO2 will remain trapped by capillary forces as residual CO2 bubbles. CO2 storage thus involves coupling of multiphase flow, solute transport, geochemical reactions and mechanical deformation. The outcome is non-obvious and requires modeling. Geological heterogeneity can both enhance and reduce the storage capacity. Enhancement can come from speeding up dissolution. Reduction may result from the chemical and mechanical weakening of the confining rock. More intrinsically, it has been recently established that heterogeneity modifies the expression of the processes across scales and may cause new processes to emerge. We propose in this project to improve our understanding of the influence of heterogeneity on the expression of the complex coupled processes involved in CO2 storage. Based on numerical simulations, we will build heuristic expressions of the emerging equations. These will be further analyzed with formal upscaling methodologies such as homogenization or renormalization. We expect to develop, first, a better understanding of the upscaled processes underlying site safety and, second, more accurate upscaled modeling tools. We will eventually determine how these tools can improve the design of injection strategies and the reliability of risk assessment predictions. Dziedzina nauki natural scienceschemical sciencesinorganic chemistryinorganic compoundsengineering and technologyenvironmental engineeringcarbon capture engineeringnatural sciencescomputer and information sciencesartificial intelligenceheuristic programming Program(-y) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Temat(-y) FP7-PEOPLE-2009-IEF - Marie Curie Action: "Intra-European Fellowships for Career Development" Zaproszenie do składania wniosków FP7-PEOPLE-2009-IEF Zobacz inne projekty w ramach tego zaproszenia System finansowania MC-IEF - Intra-European Fellowships (IEF) Koordynator AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS Wkład UE € 127 117,00 Adres CALLE SERRANO 117 28006 Madrid Hiszpania Zobacz na mapie Region Comunidad de Madrid Comunidad de Madrid Madrid Rodzaj działalności Research Organisations Kontakt administracyjny Carlos Manuel Abad Ruiz (Mr.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych
