CO2 storage at the Aztbach-Schwanenstadt gas field: a seismic monitoring feasibility study

Geological storage of carbon dioxide (CO2), i.e. its injection in the subsurface is one of the options to reduce the emission of probably the most harmful greenhouse gas.Seismic modelling is a suitable tool to image specific geological settings and to simulate different CO2 sequestration scenarios, but its success depends on a correct description of the physical properties of the CO2 bearing rocks. The present work investigates the sensitivity of the seismic properties to small variations in CO2 and in CH4 within the reservoir, as a feasibility study for future seismic time-lapse surveys.