Environmental Engineering Reference
In-Depth Information
Table 8.3.1 Summary of storage capacity
Lower estimate of
storage capacity
(Gt CO 2 )
Higher estimate of
storage capacity
(Gt CO 2 )
Reservoir type
Oil and gas fi elds
675
900
Unminable coal seams (ECBM)
3-15
200
Uncertain, but
possibly 10 6
Deep saline formations
1,000
Data from Metz et al. [8.7].
The distribution of the various formations over the planet is shown in
Figure 8.3.4. This fi gure shows a reasonable distribution over all conti-
nents of sedimentary basins (the type of geological structure where one
fi nds aquifers, hydrocarbon reservoirs, and coal seams). However, one
would need to make a more detailed regional assessment to see how the
availability of formations matches the location of point sources that emit
the CO 2 we wish to sequester. In Chapter 10, we will discuss the capacity
aspects in more detail.
Figure 8.3.4 Distribution of sedimentary basins around the world
Picture from CO 2 CRC [8.2]. Copyright by CO2CRC, reproduced with permission.
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