Aquifer Size, Seal Strength Effects on CO2 Storage Capacity, a Case Study in the Middle East

Historically, anticlinal structures have been preferred for carbon storage due to their similarities with conventional oil and gas reservoirs. In these structures, CO2 trapping relies on a seal that can retain a column of mobile CO2. However, other forms of CO2 sequestration, such as residual trapping and dissolution, can also be effective in storing CO2, such as in saline aquifers. The key to a successful sequestration project is managing pressure buildup during injection. The size of the aquifer and the strength of the seal are critical factors in controlling pressure buildup. Smaller aquifers experience faster pressure buildup, whereas larger aquifers can accommodate more CO2 injection. Similarly, a strong seal can withstand higher injection pressures, allowing for more CO2 to be stored.