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A simulation workflow for large-scale CO2 storage in the Norwegian North Sea

Abstract

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.

Category

Academic article

Client

  • Research Council of Norway (RCN) / 199878
  • Research Council of Norway (RCN) / 215641

Language

English

Affiliation

  • SINTEF Digital / Mathematics and Cybernetics

Year

2015

Published in

Computational Geosciences

ISSN

1420-0597

Publisher

Springer

Volume

20

Issue

3

Page(s)

607 - 622

View this publication at Cristin