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Observational evidence confirms modelling of the long-term integrity of CO2-reservoir caprocks

Author

Listed:
  • N. Kampman

    (Shell Global Solutions International
    University of Cambridge)

  • A. Busch

    (Shell Global Solutions International)

  • P. Bertier

    (Clay and Interface Mineralogy, RWTH Aachen University)

  • J. Snippe

    (Shell Global Solutions International)

  • S. Hangx

    (High Pressure and Temperature Laboratory, Utrecht University)

  • V. Pipich

    (Jülich Centre for Neutron Science (JCNS), Forschungszentrum Jülich GmbH, Outstation at Heinz Maier-Leibnitz Zentrum (MLZ))

  • Z. Di

    (Jülich Centre for Neutron Science (JCNS), Forschungszentrum Jülich GmbH, Outstation at Heinz Maier-Leibnitz Zentrum (MLZ))

  • G. Rother

    (Oak Ridge National Laboratory)

  • J. F. Harrington

    (British Geological Survey, Environmental Science Centre)

  • J. P. Evans

    (Utah State University)

  • A. Maskell

    (University of Cambridge)

  • H. J. Chapman

    (University of Cambridge)

  • M. J. Bickle

    (University of Cambridge)

Abstract

Storage of anthropogenic CO2 in geological formations relies on a caprock as the primary seal preventing buoyant super-critical CO2 escaping. Although natural CO2 reservoirs demonstrate that CO2 may be stored safely for millions of years, uncertainty remains in predicting how caprocks will react with CO2-bearing brines. This uncertainty poses a significant challenge to the risk assessment of geological carbon storage. Here we describe mineral reaction fronts in a CO2 reservoir-caprock system exposed to CO2 over a timescale comparable with that needed for geological carbon storage. The propagation of the reaction front is retarded by redox-sensitive mineral dissolution reactions and carbonate precipitation, which reduces its penetration into the caprock to ∼7 cm in ∼105 years. This distance is an order-of-magnitude smaller than previous predictions. The results attest to the significance of transport-limited reactions to the long-term integrity of sealing behaviour in caprocks exposed to CO2.

Suggested Citation

  • N. Kampman & A. Busch & P. Bertier & J. Snippe & S. Hangx & V. Pipich & Z. Di & G. Rother & J. F. Harrington & J. P. Evans & A. Maskell & H. J. Chapman & M. J. Bickle, 2016. "Observational evidence confirms modelling of the long-term integrity of CO2-reservoir caprocks," Nature Communications, Nature, vol. 7(1), pages 1-10, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12268
    DOI: 10.1038/ncomms12268
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    Cited by:

    1. Barbara Uliasz-Misiak & Joanna Lewandowska-Śmierzchalska & Rafał Matuła, 2021. "Selection of Underground Hydrogen Storage Risk Assessment Techniques," Energies, MDPI, vol. 14(23), pages 1-13, December.
    2. Stian Rørheim & Mohammad Hossain Bhuiyan & Andreas Bauer & Pierre Rolf Cerasi, 2021. "On the Effect of CO 2 on Seismic and Ultrasonic Properties: A Novel Shale Experiment," Energies, MDPI, vol. 14(16), pages 1-20, August.
    3. Mohammad H. Bhuiyan & Nicolaine Agofack & Kamila M. Gawel & Pierre R. Cerasi, 2020. "Micro- and Macroscale Consequences of Interactions between CO 2 and Shale Rocks," Energies, MDPI, vol. 13(5), pages 1-30, March.
    4. Vafaie, Atefeh & Cama, Jordi & Soler, Josep M. & Kivi, Iman R. & Vilarrasa, Victor, 2023. "Chemo-hydro-mechanical effects of CO2 injection on reservoir and seal rocks: A review on laboratory experiments," Renewable and Sustainable Energy Reviews, Elsevier, vol. 178(C).
    5. Tarkowski, R. & Uliasz-Misiak, B., 2022. "Towards underground hydrogen storage: A review of barriers," Renewable and Sustainable Energy Reviews, Elsevier, vol. 162(C).
    6. Zhang, Zhien & Pan, Shu-Yuan & Li, Hao & Cai, Jianchao & Olabi, Abdul Ghani & Anthony, Edward John & Manovic, Vasilije, 2020. "Recent advances in carbon dioxide utilization," Renewable and Sustainable Energy Reviews, Elsevier, vol. 125(C).
    7. Jayasekara, D.W. & Ranjith, P.G. & Wanniarachchi, W.A.M. & Rathnaweera, T.D. & Chaudhuri, A., 2020. "Effect of salinity on supercritical CO2 permeability of caprock in deep saline aquifers: An experimental study," Energy, Elsevier, vol. 191(C).

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