Enhanced Oil Recovery
Enhanced oil recovery (EOR) involves carbon dioxide (CO2) injection into depleted oil fields to increase reservoir pressure and oil fluidity, enabling oil to escape from rock pores and flow more easily toward production wells to increase oil field production. Any CO2 that comes to the surface with the recovered oil is captured and recycled and at the end of the enhanced oil recovery period, all injected and recycled CO2 is stored permanently underground (IEA 2010).