CO2-SO2-NOx-Stimulated Rock Alteration
The interdisciplinary project „COSONOStRA – CO2-SO2-NOx-Stimulated Rock Alteration“ investigates the chemical, mineralogical, petrophysical and petrochemical processes caused by the interaction of industrial captured carbon dioxide on reservoir and cap rocks. The investigations will focus on the behavior of CO2 contaminated with sulfur- and nitrogen oxides and oxygen as it could be provided by the application of the currently available industrial CO2-capture technologies. One subproject will investigate the chemical reactions, for instance, the mineralogical and chemical alteration processes whereas the second subproject will study the changes in the petrophysical and mechanical properties of the reservoir rocks caused by these processes. Especially the possible changes in the pore space structure, the permeability, electrical resistivity, and static and dynamic elastic moduli are of major interest. The temperature and pressure conditions will be chosen to be representative for potential storage reservoirs. The data and results of this project are fundamental for a reliable modeling of the long-term reservoir performance and provide a basis for the development and assessment monitoring strategies.