Formal response to Economides, CO₂ storage is feasible

The proposition by Economides and Ehlig-Economides (EE IEAGHG, 2009; Qi et al., 2009). The EE 2) CO2 storage capacity in reservoirs without outcrops has been over-estimated and 3) the potential for CO2 storage in the deep subsurface is miniscule. We take issue with each of these, discussed in turn below. We also 4) review the evidence to date, which contradicts the Economides' analysis, and 5) describe common pressure management strategies that demonstrate a more realistic and rational assessment of the experience of CO2 injection to date. We conclude that large- scale geological CO2 storage is feasible.