Product Summary

Technical Approaches to Stacked Storage: Geomechanics Supplement

When two or more CO₂ storage targets are present in the subsurface at the same geographic location, a CO₂ storage project may pursue a stacked storage approach. The potential geomechanical effects of injection in multiple intervals on interburden and on the cap rock of the uppermost injection interval are not well understood. This investigation assessed the geomechanical effects of stacked storage by modeling the combined stresses and pore pressure changes to generate a general understanding of stresses placed on interburden between CO₂ storage formations and the uppermost seal. The PCOR Partnership region has many opportunities for stacked storage in deep saline storage complexes, with additional EOR options in hydrocarbon-bearing formations, depleted reservoirs, and unconventional reservoirs.