Time-lapse multicomponent seismic modeling of CO2 fluid substitution in the Devonian Redwater reef, Alberta, Canada

Abstract

The Devonian Redwater reef, northeast of Edmonton, Alberta, is being evaluated for geological storage of [Formula: see text] for the Heartland Area Redwater [Formula: see text] Storage Project (HARP). It is close to large sources of [Formula: see text] 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 [Formula: see text] 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 [Formula: see text] saturation on the seismic response of the various reef facies and formations below the reef, based on seismic attributes and character.