Capturing and storing CO₂Schematic profile of the boreholes at the Ketzin pilot site

Since June 2008 and for the first time on European soil, CO₂ has been pumped into the underground rock strata at the Ketzin pilot site and thus securely and permanently stored. The schematic profile section shows the boreholes for injecting the CO₂ (Ktzi 201) and for monitoring the CO₂ expansion (Ktzi 200 and Ktzi 202). Up to April 2010, 34,000 tonnes of food-grade CO₂ were injected underground via the injection borehole. The CO₂ was injected securely and without any problems. The scientific monitoring of the CO₂ storage encompasses measurements in the injection borehole and the two monitoring boreholes, monitoring of the CO₂ expansion from the surface and analyses of underground rock samples, gases and liquids. ©GFZ-Potsdam