The Impact of Angular Unconformity at the Caprock Interface on CO2 Storage

ted with an angular unconformity would have on CO2 storage.We have conducted a range of 2D and 3D numerical simulations to study the impact of unconformities on CO2 storage.The results indicate that unconformities could improve CO2 sequestration by providing pathways for CO2 migration to access other storage formations.With appropriate placement of the injectors in a case where there are parallel aquifers, it is possible to maximize CO2 storage.A very thin weathered zone (10 cm – 1m) can contribute significantly to pressure diffusion across the model.