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Exploring geological storage sites for CO2 from Norwegian gas power plants: Utsira South

2009; Elsevier BV; Volume: 1; Issue: 1 Linguagem: Inglês

10.1016/j.egypro.2009.02.071

1876-6102

Per Eirik Strand Bergmo, Alv-Arne Grimstad, Erik Lindeberg, Fridtjof Riis, Wenche T. Johansen,

Atmospheric and Environmental Gas Dynamics

The southern part of the Utsira formation has been identified as a possible candidate that may require only small amounts of extra data collection to be qualified for permanent CO2 storage. Suitable injection targets are located approximately 190 km from the Kårstøgas power plant. A reservoir model was built on the basis of 2D and 3D seismic surveys in the region, well-logs and reservoir information obtained from the Sleipner injection project. Simulation of injection of up to 125 million tonne CO2 over a period of 25 years respectively 62.5 years illustrates that this part of Utsira provides a particularly robust CO2 storage site. For suitable injection points, CO2 will migrate at most 33 km from the injection point during a 5000 years period and there are no indications that it will migrate to any places were it may reach the shallow parts of the formation in the west. Changing the location of the injection point shows that the resulting distribution pattern is sensitive to the local topography. After 5000 years 74% of the CO2 is dissolved into water and the remaining fraction is immobilised.