Numerical Modeling of Potential CO 2 -Fed Enhanced Geothermal System (CO 2 -EGS) in the Gorzów Block, Poland

Maciej Miecznik, Magdalena Tyszer, Anna Sowiżdżał (), Karol Pierzchała, Leszek Pająk and Paweł Gładysz
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Maciej Miecznik: Mineral and Energy Economy Research Institute, Polish Academy of Sciences, Wybickiego 7A, 31-261 Kraków, Poland
Magdalena Tyszer: Mineral and Energy Economy Research Institute, Polish Academy of Sciences, Wybickiego 7A, 31-261 Kraków, Poland
Anna Sowiżdżał: Faculty of Geology, Geophysics and Environmental Protection, AGH University, Mickiewicza 30 Avenue, 30-059 Krakow, Poland
Karol Pierzchała: Mineral and Energy Economy Research Institute, Polish Academy of Sciences, Wybickiego 7A, 31-261 Kraków, Poland
Leszek Pająk: Faculty of Geology, Geophysics and Environmental Protection, AGH University, Mickiewicza 30 Avenue, 30-059 Krakow, Poland
Paweł Gładysz: Faculty of Energy and Fuels, AGH University, Mickiewicza 30 Avenue, 30-059 Krakow, Poland

Energies, 2025, vol. 18, issue 18, 1-30

Abstract: This article presents the results of numerical modeling for a hypothetical CO 2 -EGS system in the volcanic rocks of the Gorzów Block, Poland. Modeling was carried out in the following stages: in phase 0, modeling of the fracturing process was performed, as a result of which the permeability distribution for the newly created fractured zone was obtained. Next, the process of saturating the EGS reservoir with CO 2 was modeled until pure CO 2 could enter the production well (phase 1). Then, a multi-variant simulation of heat production was performed (phase 2). The obtained results allowed for drawing interesting conclusions: (1) the duration of phase 1 may take several years unless a sufficiently high injection rate of CO 2 is supplied, (2) the higher the injection rate of CO 2 , the lower the cumulative storage ratio of CO 2 , and (3) most of the CO 2 storage in the formation takes place in phase 1, while even 92% of the CO 2 injected in phase 2 can be recovered via the production well. Despite the environmental benefits connected with structural trapping of CO 2 , the Gorzów Block has probably too low formation temperature (145 °C) and too low stimulated volume (~0.1 km 3 ) to deliver satisfactory and stable thermal output.

Keywords: carbon dioxide storage; EGS (enhanced geothermal system); numerical modeling; TOUGH3; Gorzów Block (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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