Print Email Facebook Twitter Experiences with a Permanently Installed Seismic Monitoring Array at the CO2 Storage Site at Ketzin (Germany): A Status Overview Title 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. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2013-01-01 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 seismic monitoringpassive seismicscontinous monitoringpermanent arrayCO2 aquifer storagetime-lapse seismicseismic noise interferometryKetzin To reference this document use: http://resolver.tudelft.nl/uuid:e0adda47-b8bb-4716-94c0-eb7100e688bb DOI https://doi.org/10.1016/j.egypro.2013.06.301 Publisher Elsevier ISSN 1876-6102 Source Energy Procedia, 37, 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 The Author(s) Files PDF Noorlandt_2013.pdf 1.31 MB Close viewer /islandora/object/uuid:e0adda47-b8bb-4716-94c0-eb7100e688bb/datastream/OBJ/view