Geochemical effects of cement mineral variations on water–rock–CO₂ interactions in a sandstone reservoir as an experiment and modeling study

The complexity of water–rock–CO 2 interactions associated with CO 2 geological storage requires more comprehensive understanding with regard to the geochemical characteristics of reservoirs. In this paper, five groups of batch reactions and coupled simulations were conducted, in which rocks of different cementation types were reacted with purified water and CO 2 at 180°C and 18 Mpa for 15 days, to reveal the possible geochemical effects of...