A study of caprock hydromechanical changes associated with CO2-injection into a brine formation

A numerical study of hydromechanical changes during a deep underground injection of supercritical CO2 in a hypothetical brine aquifer/caprock system is conducted. The injection process is simulated using a newly developed computer model for multi-phase analysis of CO2 and brine water flow, coupled with heat transfer and rock deformations. In this modeling, CO2 is injected at a constant rate over a 10-year period at a depth of 1,300–1,500 m. The...