Capture principles
CO2 Capture, a Technology for the Energy Transition

The principle of the CCUS chain is illustrated in figure 3. The CO₂ is captured at the emission source of the emitting industrial site (thermal power plant fumes, refinery or steelworks fumes, sour gas on an oilfield...), it is compressed for transport, via a dedicated pipeline network or possibly by ship (pressurized liquid), then injected into a well feeding a geological storage site, a reservoir of sufficient permeability and size, capable of storing quantities of CO₂ associated with several decades of injection (aquifers, depleted oil or gas reservoirs).