The еffect of mica group minerals on CO2 storage in the sandstone reservoir of Kazakhstan

Assylay Amangeldiyeva, Nurlan Seisenbayev, Woojin Lee

2022

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DOI 10.46427/gold2022.11710
Data confidence 70 medium
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Abstract

Geochemical CO 2 sequestration (GCS) alter the water and mineral contents, therefore, consequences of the formation reactions at the local environmental conditions are crucial. This study aims to verify the mineral trapping of CO 2 in the subsurface and check the reactivity and effectiveness of mica minerals on storage performance. Prorva sandstone reservoir from the Pre-Caspian basin (Kazakhstan) was chosen for GCS modelling since it contains dark grey aleurolites with mica based on lithological analysis. TOUGHREACT (2-D radial model) was used to investigate the effect of mica minerals on reservoir potential to secure the CO 2 for a long-term safely. Constant rates of 1 kg/s for 10 and 10000 years over a distance of 1000 m radial were set for a simulation.