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Experimental Characterization of Hydrodynamic Properties of a Deformable Rock Fracture

Author

Listed:
  • Amir H. Haghi

    (Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada)

  • Richard Chalaturnyk

    (Department of Civil and Environmental Engineering, University of Alberta, Edmonton, AB T6G 2R3, Canada)

Abstract

Characterization of stress-dependent single-phase and multiphase fluid transport in fractured geo-materials is essential for a wide range of applications, including CO 2 sequestration, energy storage, and geo-energy extraction. However, pivotal studies on capillarity and multiphase fluid flow in deformable rock fractures are surprisingly sparse. In this study, we initially investigated the hydro-mechanical properties of an intact mixed-wet Calumet carbonate from the Waterways formation (Alberta) under isothermal conditions (40 °C). Then, we conducted core-flooding experiments using water and N 2 to assess changes in the aperture, absolute permeability, relative permeability, and capillary pressure of an artificially fractured Calumet core in response to changes in effective confining stress during loading (0–10 MPa) and unloading (10–3 MPa). We quantified the fracture’s non-linear closure and hysteresis effect during the cyclic loading–unloading processes. We found that porosity and absolute permeability of the fracture decreased from 1.5% and 19.8 D to 1.18% and 0.22 D, respectively, during the loading. We revealed a systematic rightward shift in the relative permeability and a significant upward shift in the dynamic capillary pressure curves as the fracture deformed. This fundamental study demonstrates the critical role of fracture deformation on fluid flow in fractured rocks, which paves the way for future research in geoscience and engineering.

Suggested Citation

  • Amir H. Haghi & Richard Chalaturnyk, 2022. "Experimental Characterization of Hydrodynamic Properties of a Deformable Rock Fracture," Energies, MDPI, vol. 15(18), pages 1-15, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:18:p:6769-:d:916392
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    References listed on IDEAS

    as
    1. Arjun Kohli & Mark Zoback, 2021. "Stratigraphically Controlled Stress Variations at the Hydraulic Fracture Test Site-1 in the Midland Basin, TX," Energies, MDPI, vol. 14(24), pages 1-24, December.
    2. Jens-Erik Lundstern & Mark D. Zoback, 2020. "Multiscale variations of the crustal stress field throughout North America," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    3. Dongjin Xu & Shihai Chen & Jinfeng Chen & Jinshan Xue & Huan Yang, 2022. "Study on the Imbibition Damage Mechanisms of Fracturing Fluid for the Whole Fracturing Process in a Tight Sandstone Gas Reservoir," Energies, MDPI, vol. 15(12), pages 1-10, June.
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