Geological storage of CO2 in the Danish subsurface: evaluation of the response of caprock and reservoir rocks on CO2 storage

The ultimate scope of the project is to contribute to the reduction of CO_2 emission to the atmosphere by investigating if CO_2 can be effectively and safely stored in reservoirs in the Danish subsurface. The project will conduct a series of laboratory experiments with CO_2 injection to core samples of potential reservoirs. The samples will be petrographically and geochemically investigated before, during and after the CO_2 injection. The injection in the samples will be performed at reservoir conditions in terms of temperature and pressure, and the samples with CO_2 will be kept at reservoir conditions for several months. In addition, a series of cap rock investigations will be performed. Based on the experiments a thermodynamic geochemical modelling of the reactions between minerals, pore fluids and CO_2 will be carried out in order to describe the effect of CO_2 on reservoir and cap rocks.