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3D Field-Scale Geomechanical Modeling of Potential CO 2 Storage Site Smeaheia, Offshore Norway

Author

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  • Md Jamilur Rahman

    (Department of Geosciences, University of Oslo (UiO), 0371 Oslo, Norway)

  • Manzar Fawad

    (Department of Geosciences, University of Oslo (UiO), 0371 Oslo, Norway)

  • Nazmul Haque Mondol

    (Department of Geosciences, University of Oslo (UiO), 0371 Oslo, Norway
    Norwegian Geotechnical Institute (NGI), 0806 Oslo, Norway)

Abstract

Injection-induced rock mechanical failure risks are critical in CO 2 sequestration, and thus there is a need to evaluate these occurrences to ensure safe and reliable subsurface storage. A stress–strain-based numerical simulation can reveal the potential mechanical risks of any CO 2 sites. This study investigated the hydromechanical effect on geomechanical failure due to injection-induced stress and pore pressure changes in the prospective CO 2 storage site Smeaheia, offshore Norway. An inverted-seismic-property-driven 3D field-scale geomechanical model was carried out in the Smeaheia area to evaluate the rock failure and deformation risks in various pressure-build-up scenarios. A one-way coupling between the before- and after-injection pressure scenarios of nine different models has been iterated using the finite element method. The effect of the sensitivity of total pore volume and pore compressibility on rock mechanical deformation is also evaluated. Although various models illustrated comparative variability on failure potential, no model predicted caprock failure or fracture based on the Mohr–Coulomb failure envelope. Moreover, the lateral mechanical failure variation among different locations indicated the possibility to identify a safer injection point with less chances of leakage. In addition, the pore volume and pore compressibility significantly influence the mechanical behavior of the reservoir and caprock rocks. Although this analysis could predict better injection locations based on geomechanical behavior, a fluid simulation model needs to be simulated for assessing lateral and vertical plume migration before making an injection decision.

Suggested Citation

  • Md Jamilur Rahman & Manzar Fawad & Nazmul Haque Mondol, 2022. "3D Field-Scale Geomechanical Modeling of Potential CO 2 Storage Site Smeaheia, Offshore Norway," Energies, MDPI, vol. 15(4), pages 1-21, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1407-:d:749916
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    References listed on IDEAS

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    1. Streit, Jürgen E & Hillis, Richard R, 2004. "Estimating fault stability and sustainable fluid pressures for underground storage of CO2 in porous rock," Energy, Elsevier, vol. 29(9), pages 1445-1456.
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    Cited by:

    1. Aysylu Askarova & Aliya Mukhametdinova & Strahinja Markovic & Galiya Khayrullina & Pavel Afanasev & Evgeny Popov & Elena Mukhina, 2023. "An Overview of Geological CO 2 Sequestration in Oil and Gas Reservoirs," Energies, MDPI, vol. 16(6), pages 1-34, March.

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