Permanent Downhole Geoelectrical Monitoring at the Ketzin CO2 Pilot Site

The electrical resistivity tomography (ERT) is part of the geophysical measurement program at the Ketzin CO2 storage site. Designed as permanent downhole electrode array, the ERT monitoring system contributes to the observation of the pore fluid changes due to the CO2/brine displacement process in the target reservoir zone. A sequence of suitable data evaluation tools has been developed and enables this permanent reservoir monitoring system to support subsurface management operations.