Special Oil & Gas Reservoirs ›› 2024, Vol. 32 ›› Issue (5): 111-118.DOI: 10.3969/j.issn.1006-6535.2025.05.013

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Evaluation of in-situ CO2 utilization and storage in heavy oil reservoirs in Canada′s Surmont Block

ZHOU Ying1, CHAI Maojie2, WEN Jing1, LIU Zheyu2, LI Yiqiang2, CHEN Zhangxing3,4, LIAO Guangzhi5   

  1. 1. PetroChina Liaohe Oilfield Company, Panjin, Liaoning 124010, China;
    2. China University of Petroleum (Beijing), Beijing 102249, China;
    3. Eastern Institute of Technology, Ningbo, Ningbo, Zhejiang 315000, China;
    4. Ningbo Institute of Digital Twin, Ningbo, Zhejiang 315000, China;
    5. PetroChina Oil, Gas & New Energy Company, Beijing 100007, China
  • Received:2025-01-26 Revised:2025-08-18 Online:2025-09-25 Published:2025-10-30

Abstract: To address the high CO2 emissions during heavy oil development in Canada′s Surmont Block, this study establishes a multiphase compositional thermal coupling model and proposes a method for in-situ CO2 utilization and storage in post-heavy-oil reservoir development. Numerical simulations were employed to systematically evaluate the production performance and storage potential of three technologies: SAGD, ES-SAGD, and VAPEX.The recovery rate of crude oil by ES-SAGD technology can reach 58%,carbon intensity is antrolled at 0.25, demonstrating dual advantages. VAPEX exhibits the lowest carbon intensity and the highest solvent recovery rate. This research establishes a synergistic pathway of "oil displacement - solvent recovery - carbon storage," providing theoretical and strategic support for constructing a low-carbon, high-efficiency, and sustainable development system in post-heavy-oil reservoir stages.

Key words: carbon storage, heavy oil, thermal recovery, solvent flooding, solvent recovery

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