Champ gazier de Sleipner

The Sleipner gas field is a natural gas field in the block 15/9 of the North Sea, about west of Stavanger, Norway. Two parts of the field are in production, Sleipner West (proven in 1974), and Sleipner East (1981). The field produces natural gas and light oil condensates from sandstone structures about below sea level. It is operated by Equinor. The field is named after the steed Sleipnir in Norse mythology. As of the end of 2005, the estimated recoverable reserves for the Sleipner West and East fields were 51.6 billion cubic meters of natural gas, of natural gas liquids, and 3.9 million cubic meters of condensates. Daily production of the field in 2008 was oil equivalents per day, 36 million cubic meters of natural gas per day, and 14,000 cubic meters of condensate per day. In an updated 2017 report, the Norway Petroleum Directorate estimates 2.72 million cubic meters of oil, 11.72 billion cubic meters of natural gas, 0.67 million tons of natural gas liquids, and 0.07 million cubic meters of condensates remain in the reserves. Sleipner field consists of four platforms. The field is planted with 18 production wells. The Sleipner A platform is located on the Sleipner East and the Sleipner B platform is located on the Sleipner West. Sleipner B is operated remotely from the Sleipner A via an umbilical cable. The Sleipner T carbon dioxide treatment platform is linked physically to the Sleipner A platform by a bridge and to the Sleipner B wellhead platform by carbon dioxide flow line. The Sleipner Riser platform, serving the Langeled and Zeepipe pipelines, is located on the Sleipner East field. The Sleipner Vest (West) field is used as a facility for carbon capture and storage (CCS). It is the world's first offshore CCS plant, operative since September 15, 1996. The project, in the initial year, proved insecure due to sinking top sand. However, after a re-perforation and an installation of a gravel layer in August 1997, CCS operations were secure. As of 2018, one million tonnes of have been transported and injected into the formation yearly since 1996.