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Estimating fault stability and sustainable fluid pressures for underground storage of CO2 in porous rock

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  • Streit, Jürgen E
  • Hillis, Richard R

Abstract

Geomechanical modelling of fault stability is an integral part of Australia’s GEODISC research program to ensure the safe storage of carbon dioxide in subsurface reservoirs. Storage of CO2 in deep saline formations or depleted hydrocarbon reservoirs requires estimates of sustainable fluid pressures that will not induce fracturing or create fault permeability that could lead to CO2 escape. Analyses of fault stability require the determination of fault orientations, ambient pore fluid pressures and in situ stresses in a potential storage site. The calculation of effective stresses that act on faults and reservoir rocks lead then to estimates of fault slip tendency and fluid pressures sustainable during CO2 storage. These parameters can be visualized on 3D images of fault surfaces or in 2D projections. Faults that are unfavourably oriented for reactivation can be identified from failure plots. In depleted oil and gas fields, modelling of fault and rock stability needs to incorporate changes of the pre-production stresses that were induced by hydrocarbon production and associated pore pressure depletion. Such induced stress changes influence the maximum sustainable formation pressures and CO2 storage volumes. Hence, determination of in situ stresses and modelling of fault stability are essential prerequisites for the safe engineering of subsurface CO2 injection and the modelling of storage capacity.

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  • 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.
    • Handle: RePEc:eee:energy:v:29:y:2004:i:9:p:1445-1456
    DOI: 10.1016/j.energy.2004.03.078
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    Cited by:

    1. Sean P. Rigby & Ali Alsayah & Richard Seely, 2022. "Impact of Exposure to Supercritical Carbon Dioxide on Reservoir Caprocks and Inter-Layers during Sequestration," Energies, MDPI, vol. 15(20), pages 1-34, October.
    2. Wang, Jinkai & Feng, Xiaoyong & Wanyan, Qiqi & Zhao, Kai & Wang, Ziji & Pei, Gen & Xie, Jun & Tian, Bo, 2022. "Hysteresis effect of three-phase fluids in the high-intensity injection–production process of sandstone underground gas storages," Energy, Elsevier, vol. 242(C).
    3. Mingze Liu & Bing Bai & Xiaochun Li & Shuai Gao & Shaobin Hu & Lei Wang & Haiqing Wu, 2016. "Assessing the applicability of unsaturated effective stress models to tensile fracturing of sandstone in CO 2 ‐water two‐phase fluids," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(5), pages 670-681, October.
    4. Víctor Vilarrasa & Jonny Rutqvist & Antonio Pio Rinaldi, 2015. "Thermal and capillary effects on the caprock mechanical stability at In Salah, Algeria," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 5(4), pages 449-461, August.
    5. Torben Treffeisen & Andreas Henk, 2020. "Faults as Volumetric Weak Zones in Reservoir-Scale Hydro-Mechanical Finite Element Models—A Comparison Based on Grid Geometry, Mesh Resolution and Fault Dip," Energies, MDPI, vol. 13(10), pages 1-27, May.
    6. Javad Naseryan Moghadam & Nazmul Haque Mondol & Per Aagaard & Helge Hellevang, 2016. "Effective stress law for the permeability of clay‐bearing sandstones by the Modified Clay Shell model," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 6(6), pages 752-774, December.
    7. Sikandar Khan & Yehia Abel Khulief & Abdullatif Al-Shuhail, 2019. "Mitigating climate change via CO2 sequestration into Biyadh reservoir: geomechanical modeling and caprock integrity," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 24(1), pages 23-52, January.
    8. Bing Bai & Xiaochun Li & Haiqing Wu & Yongsheng Wang & Mingze Liu, 2017. "A methodology for designing maximum allowable wellhead pressure for CO 2 injection: application to the Shenhua CCS demonstration project, China," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 7(1), pages 158-181, February.
    9. 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.
    10. Ba Nghiep Nguyen & Zhangshuan Hou & Diana H. Bacon & Mark D. White, 2017. "A multiscale hydro‐geochemical‐mechanical approach to analyze faulted CO 2 reservoirs," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 7(1), pages 106-127, February.

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