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StatoilHydro Begins CO2 Injection at Snøhvit

Friday, Apr 25, 2008
Article Type: Reprinted

The carbon injection systems at Melkøya are now online, pumping carbon dioxide to the Snøhvit field for storage. The first carbon flow reached the formation where it was stored on 22 April 2008.

At full capacity on Snøhvit, 700,000 tonnes of CO2 will be stored annually, which equals the emission volume from 280,000 cars.

The natural gas which is piped from the Snøhvit field to Melkøya outside Hammerfest contains five to eight percent CO2. At the onshore plant on Melkøya, CO2 is separated from the natural gas and piped back to a formation at the edge of the Snøhvit reservoir, where it is stored 2600 meters beneath the seabed.

CO2 is injected into a sandstone formation called Tubåsen. A shale cap which lies above the sandstone will seal the reservoir and ensure that the CO2 stays underground without leaking to the surface.

Carbon storage on the Snøhvit field is StatoilHydro's second large carbon storage project in Norway. One million tonnes of CO2 are already stored annually beneath the seabed on the Sleipner field. StatoilHydro is also involved in carbon storage on the gas and condensate field In Salah in Algeria in cooperation with BP and Sonatrach.

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