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Geophysical monitoring at the Ketzin pilot site for CO2 storage: New insights into the plume evolution
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.
GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Telegrafenberg, 14473 Potsdam, Germany.
GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Telegrafenberg, 14473 Potsdam, Germany.
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2015 (English)In: International Journal of Greenhouse Gas Control, ISSN 1750-5836, E-ISSN 1878-0148, Vol. 32, 90-105 p.Article in journal (Refereed) Published
Abstract [en]

To date, 3D time-lapse seismic monitoring at the Ketzin CO2 storage pilot site comprised a baseline survey conducted in 2005 and two repeat surveys conducted in 2009 and 2012. At the time of the first repeat survey (22-25 kt of CO2), the CO2 plume was found to be concentrated around the injection well with a maximum lateral extent of approximately 300-400 m and a thickness of 5-20m. Data from the 2012 survey (61 kt of CO2), show further growth and migration of the amplitude anomaly interpreted to be induced by the CO2 injection. The anomaly is similar in shape to that obtained from the 2009 survey, but significantly stronger and larger by similar to 150m in the N-S direction and by similar to 200m in the E-W direction. In agreement with the 2009 survey, the new data show a westward propagation of the plume, a trend governed by the complex structure of the reservoir. No evidence of systematic changes in the seismic signature within the overburden is observed. A quantitative assessment of the plume reveals a 15% discrepancy with the injected amount, which could be attributed to the ongoing dissolution processes. However, the estimated quantity also contains significant uncertainty.

Place, publisher, year, edition, pages
2015. Vol. 32, 90-105 p.
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Geophysics
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URN: urn:nbn:se:uu:diva-234973DOI: 10.1016/j.ijggc.2014.10.015ISI: 000348083000010OAI: oai:DiVA.org:uu-234973DiVA: diva2:758534
Available from: 2014-10-27 Created: 2014-10-27 Last updated: 2017-12-05Bibliographically approved

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Ivandic, MonikaJuhlin, ChristopherSopher, Daniel

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