The Devonian Redwater reef, northeast of Edmonton, Alberta, is being evaluated for geological storage of CO2 for the Heartland Area Redwater CO2 Storage Project (HARP). It is close to large sources of CO2 in the Redwater-Fort Saskatchewan-Edmonton region. The main objective of the study was to build a 2D geological model of the Redwater reef, from the reef center to off-reef, and investigate the seismic response of the reef to CO2 saturation in the Leduc Formation. Fluid substitution and seismic modeling were undertaken to generate PP and PS synthetic seismic data to study the consequences of CO2 saturation on the seismic response of the various reef facies and formations below the reef, based on seismic attributes and character.

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