Carbon Capture and Storage (CCS) has been identified to be a promising method to reduce anthropogenic CO2 emissions, helping to mitigate the risk of climate change. Among several challenges that come along with the industrial deployment of CCS, it is important to study and evaluate the influence of CO2 storage project(s) on the surrounding area (i.e., outside of the reservoir). In this context, a relevant issue is the pressure evolution in the subsurface that is associated with CO2 injection. Instead of using conventional reservoir simulators to model the pressure development, we apply the petroleum systems modeling software PetroMod® to simulate selected aspects of CO2 storage. This software type has the advantage to include the long-term perspective of CO2 storage, and the large spatial scale (basin wide) that is needed to fully evaluate this process. Since using a petroleum systems modelling software in the field of CO2 storage is a new approach, we first present a method we have developed to simulate CO2 injection in PetroMod. We then run a 2D model to test whether PetroMod can be used to model the pressure buildup resulting from CO2 injection.
KeywordsPetroleum System Pressure Buildup Petroleum Migration Geological Basin Brine Migration
The authors would like to thank Schlumberger GmbH for free access and use of PetroMod®, and the Helmholtz Association for funding this project. Furthermore, parts of the study were carried out at the Centre for CO2 Storage at the Deutsche Geoforschungszentrum, Potsdam. Accordingly, the authors would like to thank Dr. Bernd Wiese, Dr. Thomas Kempka and Dr. Michael Kühn for their support and feedback during and after the study.
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