Capturing and storing CO2

As part of national and European projects (including CO2SINK), the German Geo Research Centre (GFZ) is coordinating and researching the underground storage of CO2 near the town of Ketzin to the west of Berlin – in porous sandstone strata. The storage sandstone is sealed above with a massive, 240 m-thick layer of shale. For the CO2 storage, three new boreholes were drilled to a depth of around 800 metres. One of these boreholes (Ktzi 201) is used for injecting the CO2, while the two others (Ktzi 200 and Ktzi 202) are used for monitoring the injection and the CO2 expansion. ©GFZ-Potsdam