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Storage images

CO2 moves upwards to the top seal. Over time the CO2 dissolves into the formation water. This makes it denser and it moves downwards.

Enhanced oil recovery

Carbon dioxide can be injected into oil reservoirs, making the oil easier to produce. Some of the carbon dioxide remains trapped in the rocks.

Mineral carbonation

Carbon dioxide can be reacted with minerals to form stable carbonates. The mineral needs to be crushed and research is underway to increase the rate of reaction.

Treatment of mineral residues

CO2 can be stored in mineral residues such as red muds produced by alumina refineries.

World sedimentary basins

Sedimentary basins offer the best prospect for geological storage of carbon dioxide.

Storage site assessment

As more information about a potential storage site is obtained, uncertainty about the volume of carbon dioxide that can be stored is reduced.

Residual trapping

As the carbon dioxide moves through the storage rock, the tail of the plume becomes less dense. Bubbles of carbon dioxide can be snapped off by surrounding formation water and remain trapped in the pore space.

Australia storage potential

Australia has many sedimentary basins suitable for storing carbon dioxide.

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