Appendix 4 Comparison of saline aquifer CO2 storage potential of India, Pakistan and Bangladesh with that of the European sector
In the IEAGHG R&D Programme study of the CO2 storage in the European Sector (Wildenborg et al. 2005) the CO2 storage capacity in deep saline aquifers where thethickness and distribution was unknown was estimated as follows:
It was assumed:
- That one or more deep saline aquifers suitable for CO2 storage were present over 50% of the basin.
- 0.2 x 106 tonnes CO2 could be stored per km2 of the area above.
Multiplying the above gives a crude estimate of the CO2 storage potential. This methodology assumes that the storage capacity of a sedimentary basin depends on its area rather than its geology – a gross oversimplification. When this methodology is applied to those basins in India, Table 1.and that have good and fair CO2 storage potential, it produces the results shown in
|Country/Basin name||Area km2||EstimatedCO2 storage capacity 106 tonnes|
|Assam-Arakan fold belt||68000||6800|
|Bengal Basin (E Bangladesh)**||200000||20000|
*Includes offshore areas to 200 m isobath, **including Chittagong Hill Tracts
For comparison, the total saline aquifer CO2 storage capacity of the European sector (Iceland, Norway, Sweden, Finland, Denmark, Ireland, UK, Netherlands, Belgium, Luxembourg, Germany, France, Austria, Switzerland, Portugal, Spain,and Greece) is estimated to be 150 Gt CO2 (Wildenborg et al. 2005).