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Baseline characterization of the CO2SINK geological storage site at Ketzin, Germany
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2006 (English)In: Environmental Geosciences, ISSN 1075-9565, E-ISSN 1526-0984, Vol. 13, no 3, 145-161 p.Article in journal (Refereed) Published
Abstract [en]

Since April 2004, preparatory work prior to CO2injection hasbeen conducted in the CO2SINK Project, the European Union’sfirst research and development activity on the in-situ testing ofgeological storage of CO2near the town of Ketzin, Germany.Carbon dioxide will be injected into a saline aquifer of the TriassicStuttgart Formation in an anticlinal structure of the northeastGerman Basin. The drilling of one injection and two observationwells will commence at the end of 2006. The predrilling phasefocuses on the baseline geological parameters of the anticline. TheStuttgart Formation is lithologically heterogeneous; it consists ofsandy channel-(string)-facies rocks, with good reservoir propertiesalternating with muddy flood-plain-facies rocks of poor reservoirquality. Playa-type rocks form the immediate cap rock above theCO2SINK reservoir. A geostatistical approach has been applied todescribe the reservoir architecture between and beyond well con-trol. This model forms the basis for the generation of reservoir-dynamic models of CO2injection that assist in the planning ofinjection operations and in the understanding of CO2plume evo-lution. A verification of the geometry of the reservoir and thestructural situation of its overburden is expected from a three-dimensional baseline seismic survey that was conducted in theautumn of 2005. Laboratory experiments under simulated in-situconditions were performed to evaluate the geophysical signatureof rocks saturated with CO2. The chemical composition of thegroundwater and the CO2flux in the soil were analyzed across theKetzin anticline, providing the baseline for a monitoring programduring and after injection of CO2, targeted at the detection ofpotential CO2leakage from the storage reservoir.

Place, publisher, year, edition, pages
2006. Vol. 13, no 3, 145-161 p.
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Geophysics
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URN: urn:nbn:se:uu:diva-83326DOI: 10.1306/eg.02080605016OAI: oai:DiVA.org:uu-83326DiVA: diva2:111234
Available from: 2008-01-18 Created: 2008-01-18 Last updated: 2017-12-14Bibliographically approved

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Juhlin, Christopher

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