Zero-Offset VSP Monitoring of CO₂ Storage: Impedance Inversion and Wedge Modelling at the Ketzin Pilot Site

Figure 2

Map of the normalised amplitude difference (repeat minus baseline) at the reservoir horizon (top of Stuttgart Formation). The difference is the result of time-lapse processing of the 3D surface seismic baseline (recorded autumn 2005) and repeat surveys (recorded autumn 2009 [19]). The injection well Ktzi201 and the observation well Ktzi202 are marked as dots. The inline 1172, which is crossing the observation well Ktzi202, is indicated by the black line.