Assessing Field Pressure and Plume Migration in CO2 Storages: Application of Case-specific Workflows at in Salah and Sleipner

Performance assessment of CO2 geological storage aims at applying a specific workflow adapted to the site to be considered, using iterations between modeling tools and methods together with monitoring techniques. In the frame of the CO2ReMoVe European project site specific innovative workflows have been applied at In Salah (Krechba reservoir) and Sleipner (Utsira sand formation reservoir) to predict the reservoir pressure field and the associated CO2 plume migration. The workflows we applied benefit from appropriate site monitoring techniques: respectively InSAR satellite imaging for the Krechba reservoir and 4D Seismics for the Utsira sand formation storage. Indeed, simulation of the reservoir pressure and the plume migration are the two major modeling issues to deal with when considering storage efficiency and safety -together with public awareness when addressing the public acceptance issue.