A Simulation Workflow for Large-scale CO2 Storage in the Norwegian North Sea
Large-scale CO2 injection problems have revived the interest in simple models, like percolation and vertically-averaged models, for simulating fluid flow in reservoirs and aquifers. A series of such models have been collected and implemented together with standard reservoir simulation capabilities in a high-level scripting language as part of the open-source MATLAB Reservoir Simulation Toolbox (MRST) to give a set of simulation methods of increasing computational complexity. Herein, we outline the methods and discuss how they can be combined to create a flexible tool-chain for investigating CO2 storage on a scale that would have significant impact on European CO2 emissions. In particular, we discuss geometrical methods for identifying structural traps, percolation-type methods for identifying potential spill paths, and vertical-equilibrium methods that can efficiently simulate structural, residual, and solubility trapping in a thousand-year perspective. The utility of the overall workflow is demonstrated using real-life depth and thickness maps of two geological formations from the recent CO2 Storage Atlas of the Norwegian North Sea.
- Research Council of Norway (RCN) / 199878
- Research Council of Norway (RCN) / 215641
- SINTEF Digital / Mathematics and Cybernetics
ECMOR XIV - 14th European conference on the mathematics of oil recovery
08.09.2014 - 11.09.2014
European Association of Geoscientists and Engineers