From the Troll Gas processing plant at Kollsnes near Bergen to the Sleipner area, a pipeline with an internal diameter of 40 inches, running for 814 kilometres from the Sleipner area of the North Sea to a receiving terminal at Zeebrugge in Belgium.
The Vesterled system runs from the Heimdal Riser platform in the North Sea to St Fergus in the UK, is 361 kilometres long overall and has an internal diameter of 32 inches.
The Franpipe system runs for 840 kilometres from the Draupner E riser platform in the North Sea to the receiving terminal at Port Ouest in Dunkerque on the French coast. It has an internal diameter of 42 inches.
The Haltenpipe line is 250 kilometres long and carries gas from the Heidrun field in the Norwegian Sea to Tjeldbergodden in mid-Norway. With an internal diameter of 16 inches, it became operational in December 1996.
Gas production from the Åsgard field formed the basis for the pipeline system. Flexible risers from the floating Åsgard B gas platform tie into an export riser base on the seabed, which forms the starting point for the 42-inch Åsgard Transport line.