Assessment of Geotemperature Conditions for the Use of Supercritical Carbon Dioxide to Enhance Oil Recovery in Oil and Gas Complexes of the Perm Krai

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Abstract

The article is devoted to the assessment of geothermal conditions for the application of supercritical carbon dioxide (SC-CO2) to increase oil recovery in the oil-and-gas-bearing complexes of the Perm Territory. In the context of the depletion of the region's fields, CO2-based technologies are of particular interest due to their effectiveness and compliance with the trends of decarbonization. The main focus is on analyzing the reservoir temperatures that determine the possibility of CO2 transitioning to a supercritical state. The assessment takes into account the thermodynamic features of CO2 and the reservoir characteristics of the main oil and gas-bearing complexes. It has been established that temperature parameters are critical for the effective application of the technology, and they vary depending on the depth of the reservoir and the geological structure of the area. The geothermal conditions within the Devonian and Visean terrigenous and Tournaisian-Famennian carbonate oil and gas-bearing complexes have been examined. Areas with favorable conditions for the use of SC-CO2 have been identified, where reservoir temperatures exceed the minimum values required for the transition to the supercritical phase. It has been noted that complex effects, including changes in the filtration properties of rocks, are possible in carbonate reservoirs. The results of this study can be used to plan measures for increasing oil recovery, taking into account regional characteristics. It has been stated that further research on reservoir parameters and the mechanisms of CO2 interaction with fluids and rocks is required for the successful implementation of this technology.

Keywords

Perm Kraimethods of increasing oil recoverygeothermal conditionsphase statesupercritical CO2geothermal gradientoil and gas complex

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Published
24 October 2025
Issue date
24 October 2025
Issue
Vol. 25, No. 3 (2025)
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