Fields Operated By Others
ConocoPhillips has interests in fields operated by co-venturers - fields that are on stream and constitute a considerable part of the company's asset portfolio on the Norwegian continental shelf. Heidrun, Visund, Oseberg, Grane, Troll, Alvheim and Huldra are among these fields.
ConocoPhillips is also a partner in the Aasta Hansteen gas field, which is under development. Planned started-up in late 2018/early 2019.
The Heidrun field is located on Haltenbanken, off the coast of mid-Norway. The oil from the field is primarily transported by oil tanker to Statoil's Mongstad terminal in Hordaland County. The gas from Heidrun is transported by pipeline to Tjeldbergodden in Møre and Romsdal County, and also via Åsgård Transport to the Kårstø terminal north of Stavanger.
Oil and gas production at the Heidrun field started in 1995. Statoil has been the operator since then.
The field was, however, discovered by Conoco in 1985, and Conoco was the development operator until production start-up, when the operatorship was transferred to Statoil. The field was developed using a concrete tension leg platform at a water depth of 350 meters.
ConocoPhillips' ownership in Heidrun is 24.08 percent.
Huldra is a gas and condensate field north of the Oseberg field. Prouction was shut down in September 2014.
Huldra procuced from an unmanned wellhead platform. Gas was exported to the Heimdal field and condensate to Veslefrikk.
Huldra was in production from 2001 to 2014. Statoil is the operator. ConocoPhillips' ownership share is 23.34 percent.
The Alvheim field is located in the North Sea, approximately 224 kilometers west of Haugesund on the west coast. The field came on stream in 2008.
The field is developed with a production vessel, Alvheim FPSO, and subsea wells. The water depth is 120-130 meters.
The oil from Alvheim is transported by shuttle tanker, while gas is being exported to St Fergus, UK, through the Scottish Area Gas Evacuation (SAGE) system.
The Alvheim field is operated by Aker BP. ConocPhillips has an ownership interest of 20 percent.
The Visund field is located in the Tampen area. The field came on stream in 1999.
ConocoPhillips has a 9.1 percent share in the field. Statoil is the operator of Visund, which was developed using a floating production facility.
The oil is transported by pipeline to Gullfaks for storage and transportation. In 2005, Visund started producing gas and exporting it to the European continent.
Grane is located approximately 185 kilometers west of Stavanger in 127 meters of water depth. Statoil is the operator of the Grane field. ConocoPhillips has a 6.17 percent interest in this oil field, which is the first field on the Norwegian continental shelf to produce heavy crude oil.
Oseberg and the Satellites
Oseberg is an oil field with an overlying gas cap, located in the northern part of the North Sea. The water depth is about 100 metres.
The field was discovered in 1979 and was developed in several stages. First oil production from the field started in 1988, while gas export from Oseberg commenced in 2000.
ConocoPhillips has a 2.4 percent ownership interest in all the Oseberg licences. ConocoPhillips also has an ownership interest in the Oseberg Transportation System, which transports oil from the Oseberg area to the Sture terminal in Hordaland. The crude oil is then exported by ship from the terminal.
The Troll field lies in the northern part of the North Sea, approximately 65 kilometers west of Kollsnes, near Bergen in Hordaland County. Statoil is operator of the field, and ConocoPhillips' interest is 1.62 percent in the Troll Unit.
Troll is the largest gas discovery in the North Sea. The gas from the field is treated at the Kollsnes processing plant. Troll is also one of the largest oil fields on the Norwegian continental shelf.