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If CO 2 is injected in deep geological formations it is important that the receiving formation has sufficient porosity and permeability for storage and transmission and be overlain by a suitable low-permeability cap rock formation. When the resulting CO 2 plume encounters a well bore, leakage may occur through various pathways in the “disturbed zone” surrounding the well casing. Gasda...
Geologic sequestration of CO 2 involves injection into underground formations including oil beds, deep un-minable coal seams, and deep saline aquifers with temperature and pressure conditions such that CO 2 will likely be in the supercritical state. It is important that the receiving aquifer have sufficient porosity and permeability and be overlain by a suitable low-permeability cap...
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