Research Article
Zero-Offset VSP Monitoring of CO2 Storage: Impedance Inversion and Wedge Modelling at the Ketzin Pilot Site
Table 1
Timeline of 3D surface seismic and zero-offset VSP measurements in Ketzin with correspondent tons of CO2 injected.
| Event | Run | Date | Injected CO2 |
| 3D surface seismic | Baseline | Autumn 2005 | | Zero-offset VSP | Baseline | November/December 2007 | | Start of injection | | 30 June 2008 | | Breakthrough in Ktzi202 | | 20 March 2009, after 263 days | 11 kt | 3D surface seismic | 1st repeat | Autumn 2009 | 22 kt–25 kt | Zero-offset VSP | 1st repeat | February 2011 | 46 kt | 3D surface seismic | 2nd repeat | Autumn 2012 | 61 kt |
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