Experimental and modelling study of storage of CO 2 and impurities in a depleted gas field in northeast Netherlands

In order to investigate the effects of impurities on subsurface storage of CO 2 , experiments were carried out on Permian Rotliegend reservoir and Zechstein caprock core samples at subsurface conditions of 300 bar and 100 C. The experiments were performed in the presence of brine and the following gas compositions: CO 2 , CO 2 +5000 ppm H 2 S, CO 2 +100 ppm H 2 S and CO 2 +100 ppm So 2 for a 30 day duration. Following CO 2 injection, permeability of the reservoir and caprock samples increased by 10-30% and by a factor of 3-10 respectively. After co-injection of 5000 ppm H 2 S permeability of b... Mehr ...