Regional Model Development and Study of Pressure Propagation

Simulation studies on CO2 injection operations for geological storage shows that the pressure wave propagates much faster and wider than the CO2 plume. This must be addressed in any site modelling by proper boundary conditions since the pressure rise can reach the model delineation and then cause unrealistic high simulated pressure increase in the site model if the site model boundaries are closed. Any dynamic capacity estimation method depends on the modelled pressure distribution and tends to erroneously results, if the boundary problem is not addressed adequately.This study illustrates how the boundary problem can be analysed by developing a regional scale model surrounding the site model. The use of pore volume multipliers is demonstrated to be a robust option to handle the boundary condition problem.A case study from a Danish onshore locality is presented. Static and dynamic modelling was done in Petrel and Eclipse 100 software respectively.