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Numerically Coupled Thermo-Hydro-Mechanical Analyses of Ultra-Heavy Oil Reservoirs during the Micro-Fracturing Stage

Author

Listed:
  • Yanfang Gao

    (State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China)

  • Xiaoyang Wang

    (Sinopec Research Institute of Petroleum Engineering, Beijing 102206, China)

  • Hailong Jiang

    (Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Shuaiwei Ding

    (State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China)

Abstract

Water injection in SAGD well pairs has rapidly developed to improve the circulation preheating efficiency and the steam chamber propagation speed. However, a key problem is to evaluate the coupled thermo-geomechanical effects of water injection under complex operations. In this paper, a coupled thermo-hydro-mechanical model considering skeleton shear dilation and phase change of bitumen was established. Major conclusions were drawn that there were large temperature changes only in two separate areas around wells. The pore pressures in the reservoir around wells and the base rock right below the production well increased significantly. The void ratio was improved in the reservoir around wells, especially in the inter-well region. The reservoir was lifted, and the largest uplift was right above the wells. This information can guide engineers in properly evaluating the field operations.

Suggested Citation

  • Yanfang Gao & Xiaoyang Wang & Hailong Jiang & Shuaiwei Ding, 2022. "Numerically Coupled Thermo-Hydro-Mechanical Analyses of Ultra-Heavy Oil Reservoirs during the Micro-Fracturing Stage," Energies, MDPI, vol. 15(10), pages 1-20, May.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:10:p:3677-:d:817790
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    Cited by:

    1. Beatriz dos Santos Santana & Lorena Cardoso Batista & Edson de Andrade Araújo & Cláudio Regis dos Santos Lucas & Daniel Nobre Nunes da Silva & Pedro Tupã Pandava Aum, 2023. "Understanding the Impact of Reservoir Low-Permeability Subdomains in the Steam Injection Process," Energies, MDPI, vol. 16(2), pages 1-13, January.

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