Abstract
A risk assessment methodology, which considers the dynamic behaviour of the CO2 plume in the storage reservoir and its impact on the potential leakage risk profiles with special reference to the post closure period, was developed. The approach involves three main steps. The implementation of this methodology has been demonstrated using a generic reservoir/caprock model comprising a dipping reservoir, forming a structural anticline trap under sealing caprock and subvertical faults featuring small displacement. As well as the base case scenario with homogeneous porosity/permeability within each layer, heterogeneous distributions featuring high porosity/permeability channels were also considered. CO2 injection at 1 Mt/year for 30 years was simulated to investigate the plume migration behaviour, and to map the associated potential leakage profiles (through the caprock) within the CO2 plume footprint area.
Original language | English |
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Pages (from-to) | 4750-4757 |
Number of pages | 8 |
Journal | Energy Procedia |
Volume | 63 |
DOIs | |
Publication status | Published - 2014 |
Externally published | Yes |
Event | 12th International Conference on Greenhouse Gas Control Technologies, GHGT 2014 - Austin, United States Duration: 5 Oct 2014 → 9 Oct 2014 |
Keywords
- CO storage
- Post-closure period
- Reservoir simulation
- Risk and uncertainty assessment