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Buchkapitel

Safe operation of geological CO2 storage using the example of the pilot site in Ketzin

Urheber*innen
/persons/resource/mkuehn

Kühn,  M.
5.3 Hydrogeology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/alieb

Liebscher,  A.
CGS Centre for Geological Storage, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/martens

Martens,  S.
CGS Centre for Geological Storage, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/fmoeller

Moeller,  F.
CGS Centre for Geological Storage, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/kempka

Kempka,  T.
5.3 Hydrogeology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/streibel

Streibel,  M.
CGS Centre for Geological Storage, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Zitation

Kühn, M., Liebscher, A., Martens, S., Moeller, F., Kempka, T., Streibel, M. (2015): Safe operation of geological CO2 storage using the example of the pilot site in Ketzin. - In: Kuckshinrichs, W., Hake, J.-F. (Eds.), Carbon Capture, Storage and Use, Cham : Springer International Publishing, 127-143.
https://doi.org/10.1007/978-3-319-11943-4_6


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_755890
Zusammenfassung
Reservoir rocks with the potential for storing CO2 are mainly sandstones. In them, four trapping mechanisms facilitate permanent and safe storage: (i) structural trapping below an impermeable caprock, (ii) immobilization via capillary forces in the pore space, (iii) dissolution of CO2 in the formation water, and (iv) mineral trapping via carbonization. Because leaks can occur monitoring of CO2 storage sites is essential. However, the technological risks appear to be manageable. This is emphasized by the experience from the first continental European field laboratory in Ketzin, Germany. The results show that: (i) the geological storage of CO2 is safe and reliable, and poses no danger to humans or the environment, (ii) a well-thought-out combination of different geochemical and geophysical monitoring methods can detect small amounts of CO2 and image its spatial distribution, (iii) the interactions between fluid and rock induced by CO2 injection at the pilot site in Ketzin have no significant impacts and do not influence the integrity of the reservoir or the caprock, and (iv) numerical simulations can depict the temporal and spatial behaviour of injected CO2. In addition, results from studies at Ketzin provide basic and transferable knowledge which is of value for a new integrated concept of CO2 mitigation and utilization in combination with the power-to-gas concept based on a closed carbon cycle approach.