The 7th International CO2 Conference Web Site - Stabilizing Atmospheric CO2 Concentration: Can Geologic Storage Help?

by Lynn Orr

One option for reducing emissions of CO₂ to the atmosphere as a result of combustion of fossil fuels is to capture CO₂ and inject it into porous subsurface geologic formations. High pressure CO₂ has been used for the last three decades as an agent for enhanced oil recovery, and hence considerable experience in the technical issues associated with predicting the movement of CO₂ in the subsurface has been accumulated. Significant additional quantities of CO₂ could be stored in depleted oil and gas reservoirs if CO₂ were available at low cost. These formations are appealing as storage sites because the subsurface is known to have a trap and seal that contains the buoyant oil or gas.

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