TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractAs part of the Dutch Climate Policy on the implementation of the Kyoto protocol, the Netherlands government is currently investigating to what extent CO 2 sequestration in the deep subsurface could help reduce CO 2 emissions. On 7 February 2002 the Dutch Minister of Economic Affairs introduced a new policy to promote feasibility studies into CO 2 storage in the subsurface (The CRUST program).Gaz de France Production Netherlands B.V. (GPN) is currently producing natural gas from the Dutch North Sea continental shelf. As one of the players in the Dutch gas supply market, GPN supports the idea of injecting CO 2 into depleted gas fields in order to reduce CO 2 emissions into the atmosphere.The gas produced at one of GPN's platforms, the K12-B platform, contains a relatively high proportion of CO 2 . This CO 2 is at present separated from the produced natural gas and released into the atmosphere. Preliminary assessment shows that it may be relatively easy to re-inject this CO 2 into the Rotliegend gas reservoir. The reservoir is located at a depth of some 3800 meters; with a hydrostatic pressure regime and a formation temperature of 132 °C. Hence GPN's K12-B platform offers a good opportunity to study the technical conditions of CO 2 injection at greater depths including the behavior of the gas reservoir itself. Developing the CO 2injection demonstration facility at the K12-B platform will increase our understanding of the benefits and drawbacks of this technique. This paper reports on the results of the phase 1 and 2 studies of the ORC project -Offshore Re-injection of CO 2 . Phase 1 included a desk feasibility study into the possibility of underground CO 2 injection at the K12-B platform. Phase 2 comprises of actual demonstration of the concept of underground storage. Some results of the early CO 2 injection tests ar1 reported.
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