Print Email Facebook Twitter GHGT-11 - Experiences with a permanently installed seismic monitoring array at the CO2 storage site at Ketzin (Germany): A status overview Title GHGT-11 - Experiences with a permanently installed seismic monitoring array at the CO2 storage site at Ketzin (Germany): A status overview Author Arts, R.J. Zhang, X. Verdel, A.R. Santonico, D. Meekes, J.A.C. Noorlandt, R.P. Paap, B.F. Vandeweijer, V.P. Publication year 2013 Abstract Since July 2008, CO2 is injected into a saline aquifer near the town of Ketzin in Germany. For monitoring the CO2-migration close to the injection well, TNO installed a fixed 2D seismic array of 120 meters length in 2009, with 3-component geophones at the surface, 4-component receivers at 50 meters depth and a central vertical array of 4-component receivers. This specific test acquisition set-up was and is being used both for the recording of high-quality active time-lapse seismic data as well as for continuous passive seismic data recording. The latter gave rise to the identification of a large number of surface noise related events and some very weak events possibly originating from the deeper subsurface. The active seismic data acquisition consisted of a conventional repeat survey after 2 years using an accelerated weight drop source, as well as a test with a prototype semi-permanent source located at the site during a period of 3 weeks in which CO2 injection was stopped. In both cases subtle changes at the reservoir level have been observed, though the limitations of the experimental lay-out make it difficult to come up with firm conclusions in terms of CO2 induced pressure and saturation changes. Further analysis of the data is ongoing work. Subject Earth & EnvironmentSGE - Sustainable Geo EnergyEELS - Earth, Environmental and Life SciencesGeological Survey NetherlandsGeosciencesEnergy / Geological Survey Netherlands To reference this document use: http://resolver.tudelft.nl/uuid:02fe91c3-6438-4688-a18e-d45b68350e84 DOI https://doi.org/10.1016/j.egypro.2013.06.301 TNO identifier 477508 Source Energy Procedia, 37, 4015-4023 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.