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The Influence of CO 2 Injection Timing and Well Placement on Storage Indicators in a Producing Natural Gas Reservoir with High CO 2 Content

Author

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  • Domagoj Vulin

    (Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia)

  • Lucija Jukić

    (Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia)

  • Valentina Kružić

    (Heidelberg Materials, Berliner Str. 6, 69120 Heidelberg, Germany)

  • Ante Dujaković

    (Ina Industrija Nafte d.d., Avenija Većeslava Holjevca 10, 10002 Zagreb, Croatia)

Abstract

Carbon capture and storage is recognized as the best method for CO 2 emission mitigation in cases where the emissions cannot be avoided by switching to renewable energy or by increasing efficiency. In the Republic of Croatia, there are a number of gas-condensate reservoirs with a high content of CO 2 that are adequate candidates for CO 2 storage. The injection starts at selected different points before the end of production and might bring financial benefits as a result of CO 2 injection patterns and efficient permanent storage. Employing a model of a typical reservoir, various scenarios of CO 2 injection are examined to assess the impact of injection well positioning and timing on the reservoir’s sustainability for permanent CO 2 storage. The main indicators used for the assessment are additional hydrocarbon recovery, retention, and storability.

Suggested Citation

  • Domagoj Vulin & Lucija Jukić & Valentina Kružić & Ante Dujaković, 2025. "The Influence of CO 2 Injection Timing and Well Placement on Storage Indicators in a Producing Natural Gas Reservoir with High CO 2 Content," Sustainability, MDPI, vol. 17(21), pages 1-22, November.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:21:p:9876-:d:1788360
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