Carbon dioxide storage in natural gas reservoirs

The general idea of CO2 disposal in gas reservoirs is that the underground volume of the ultimately recoverable hydrocarbons (gas and condensate) is replaced by CO2. This paper investigates the feasibility of carbon dioxide disposal in depleted gas reservoirs. Gas reservoirs are a practical storage site for the carbon dioxide, because the presence of the hydrocarbons that were trapped in the subsurface for thousands to millions of years proves that they can retain the carbon dioxide safely. The storage capacity of depleted gas reservoirs depends on numerous factors reviewed in this paper.