 | The Capture and Sequestration of Carbon Dioxide |
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The Sequestration Options of
Carbon Dioxide
Disposal
Geological
The geological sequestration involves, depleted oil and gas fields, deep saline aquifers, unminable coal measures and enhanced oil recovery.
The technology for injection of CO2 has been developed by the oil industry for the purposes of CO2 enhanced
oil production. However
there may be some adaptations required for the disposal of CO2.
It is required that the reservoirs be of a depth of greater than 800m, to allow the CO2 to be in supercritical
state. By this method the
capacity of the reservoir can be increased. However, although the pressure needs to be high, the temperature
must be low; this areas
which have a low geothermal gradient would be desirable.
Once the CO2 has been injected, long term monitoring must be carried out for management and verification
purposes.
Because alot of the components for geological sequestration have already been developed, although for
different purposes, there is a
growing interest in geological sequestration. This being the case the implementation timer and the technical
risks are less than for the
other technologies.
The technology for injection of CO2 has been developed by the oil industry for the purposes of CO2 enhanced
oil production. However
there may be some adaptations required for the disposal of CO2.