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Development and Application of a Simplified Method for Preliminary Assessment of Enhanced Oil Recovery and CO2 Geological Storage in Petroleum Reservoirs

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  • Nívia Morgana de Oliveira
  • Paulo Couto
  • Alexandre Szklo

Abstract

Geologic carbon storage in depleted oil and gas reservoirs is a key CO2 mitigation strategy, utilizing existing infrastructure such as injection wells and pipelines, while capitalizing on well‐characterized subsurface properties. This article introduces a versatile methodology designed to estimate critical parameters, including the number of wells needed for CO2 storage, recoverable oil volumes, the CO2 content in produced oil, maximum storage capacity, and additional recovery time. This approach is based on established correlations and literature data, providing a simplified cost‐effective preliminary assessment prior to investing resources (labor and capital) into detailed site‐specific studies, which is particularly advantageous in underexplored or emerging basins. The methodology has been validated against field data for a real mature oil field in Brazil, demonstrating its broad applicability and yielding relatively accurate predictions for key performance indicators. This practical tool facilitates the screening of reservoirs worldwide and supports decision‐making for CO2‐enhanced oil recovery (CO2‐EOR) and long‐term carbon sequestration initiatives. 2025 Society of Chemical Industry and John Wiley & Sons, Ltd.

Suggested Citation

  • Nívia Morgana de Oliveira & Paulo Couto & Alexandre Szklo, 2026. "Development and Application of a Simplified Method for Preliminary Assessment of Enhanced Oil Recovery and CO2 Geological Storage in Petroleum Reservoirs," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 16(2), pages 238-252, April.
    • Handle: RePEc:wly:greenh:v:16:y:2026:i:2:p:238-252
    DOI: 10.1002/ghg.70009
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