long-term storage stability
This siltstone exhibits rapidly increasing porosity and permeability that stabilize after supercritical CO₂ exposure, suitable for CO₂ geological storage and enhanced recovery.
Hao, Jianfeng · Chunyu, Guo · Qin, Bing · Sun, Weiji · Liang, Bing · Leilei, Li
ACS Omega 2025
Reaction solution pH decreased from 7.19 to 5.68
Calcite had the fastest dissolution rate, followed by potassium feldspar and finally illite
Porosity and permeability increased rapidly during CO₂ injection, with smaller increases after injection ceased, eventually stabilizing