Nature – Wijaya et al. (2024): Basin-scale study of CO2 storage in stacked sequence of geological formations

Nur Wijaya, David Morgan, Derek Vikara, Timothy Grant, Guoxiang Liu IN: scientific reports, 14, https://doi.org/10.1038/s41598-024-66272-x

Commercial scale decarbonization through carbon capture and storage may likely involve many CO₂ storage projects located in close proximity. The close proximity could raise concerns over caprock integrity associated with reservoir pressure buildup and interference among adjacent projects. Commercial-scale injection will also require large prospective CO₂ storage resource and high injectivity in the targeted storage formations. To accommodate the need for both large resource and high injectivity, project operators could consider injecting CO₂ into a stacked sequence of formations. This analysis investigates the benefits of injecting CO₂ into a vertically stacked sequence of saline formations, over injecting the same amount of CO₂ into a single saline formation, in addressing these challenges.

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