“…Injection rates for water and CO 2 were set so that the reservoir pressure remained at or above the MMP but 400 psi below the fracture pressure, and a 5-spot pattern of one production well and four injection wells was assumed (Lyons, 1996). Holtz (2014) reported that field studies show that after the initial injection of CO 2 , reservoir injectivity may increase, decline, or stay unchanged.…”