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Transcripción del abstract original del autor: At the Sleipner gas field in the North Sea, CO2 has been stripped from the produced natural gas and injected into an overlying aquifer for nearly 7 years. In that time, around 1 million tonnes of CO2 have been injected yearly without any significant operational problems observed in the capture plant or in the injection well. The Sleipner project is the first commercial application of CO2 storage in deep saline aquifers in the world. To monitor the injected CO2 a separate European Commission project called The Saline Aquifer CO2 Storage (SACS) project was established in 1998. As part of the SACS project, seismic surveying has been used to successfully monitor the CO2 in the Utsira formation, an industry first. Repeat seismic surveys have shown the movement of the injected CO2 within the reservoir. As expected, the injected CO2 has migrated upwards within the reservoir towards the top of the reservoir. The work, however did not stop at the end of December 2002, because a new EC supported project, called CO2STORE, will extend the study of the Utsira Formation until 2005. This project will have two focuses: * To extend the work on the Utsira formation to investigate the long term fate of the injected CO2 and evaluate other monitoring techniques, hopefully that are more cost effective that repeat seismic surveys. * Apply the knowledge gained in SACS to develop 4 site specific plans for CO2 storage operations, elsewhere in Europe, both on and offshore. The Sleipner project is without doubt a world-leader being the first of a kind commercial CO2 injection project. Such projects are necessary to prove that CO2 capture and storage is a technically feasible and effective method for greenhouse mitigation. To gain international acceptance as a mitigation option, it must be demonstrated that CO2 storage is both safe and has a low environment impact.