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Norway’s largest oil pipeline now in place


10 Sep 2018

Photo - see caption

Equinor has announced that last week Norway’s largest and longest pipeline, laid by the vessel Saipem Castorone, reached the Johan Sverdrup field in the North Sea.

Late last week the last pipe of what is now Norway’s longest and largest oil pipeline was installed right next to the riser platform at the Johan Sverdrup field. The 36-inch pipeline extends 283 km from the Mongstad oil terminal outside Bergen to the giant field in the North Sea. 

Photo - see caption
Norway’s largest oil pipeline now in place

Photo shows Saipem Castorone at the Johan Sverdrup field in the North Sea. (Photo: Bo B. Randulff / Roar Lindefjeld / Equinor ASA)

'We have together with our supplier Saipem succeeded in laying the oil pipeline to Johan Sverdrup without any serious incidents. It has been a significant operation, involving more than 600 people at the most, who have welded together over 23,000 pipes to create what has now become Norway’s largest and longest oil pipeline,' says Geir Bjaanes, responsible for subsea, power and pipelines for the Johan Sverdrup project.

'The oil pipeline plays a really central role in the project. When the Johan Sverdrup field produces at peak, 660,000 barrels of oil valued at more than NOK 350 million each day, will flow daily into Mongstad,' says Bjaanes.

The vessel Saipem Castorone began pipelaying operations at Mongstad in late April this year. After, the pipeline was laid through the Fensfjord before the vessel set course for the Johan Sverdrup field. The operations have been executed with high quality and no serious incidents. 

With the oil pipeline installed Saipem Castorone is now getting ready for the next stage – laying the 156 km long gas pipeline that will extend from the Johan Sverdrup field to the Statpipe pipeline, from where gas from the field will eventually be shipped to Kårstø. The pipeline installation operations are expected to be completed during the autumn.

'We have spent many years with Saipem planning these operations. We’re all very aware of the size of the task, with several months at sea with a significant installation scope. The key is to follow the thorough plans that we’ve prepared and maintain our significant focus on HSE along the way, until also the gas pipeline is in place,' says Tor Kåre Egelandsdal, responsible for the pipeline installation and the contract with Saipem.

When the pipeline operations are complete, the 2018 Johan Sverdrup installation campaign will be over. With three jackets, two topsides, one bridge, over 400 km of pipelines, and 200 km of power cables, the 2018 campaign is probably the busiest installation campaign ever for a project on the Norwegian continental shelf. And in 2019 the last two topsides and remaining bridges will be put in place before startup of the first phase of the Johan Sverdrup development expected in November next year.

Facts about the Johan Sverdrup export pipelines

  • The largest oil pipeline on the Norwegian continental shelf, both in terms of diameter (36 inches) and length (283 km).
  • 36,000 pipes totaling approximately 440 km of pipelines (oil pipeline – 283 km; gas pipeline – 156 km).
  • Total weight is 230,000 tonnes of steel (with coating the pipeline weight increases to approximately 360,000 tonnes). – The steel alone weighs 33 times the weight of the Eiffel tower
  • The oil pipeline measures 36 inches in diameter; the gas pipeline measures 18 inches in diameter.
  • The oil pipeline lies at its deepest point 537 meters below the sea surface.
  • Saipem Castorone (pipelaying vessel): 330 meters long (excluding ramp/stinger), with a capacity of up to 702 people on board.

Facts about the Johan Sverdrup field

  • Johan Sverdrup is one of the five biggest oil fields on the Norwegian continental shelf. With expected recoverable resources of 2.7 billion barrels of oil equivalent (with an expected span between 2.2-3.2 billion barrels of oil equivalent), it is one of the most important industrial projects in Norway over the next 50 years.
  • Johan Sverdrup will be developed in several phases. Phase 1 is expected to start up in November 2019 with production capacity estimated at 440,000 barrels of oil per day.
  • Phase 2 is expected to start up in 2022, with full field production estimated at up to 660,000 barrels of oil per day. Peak production on Johan Sverdrup will be equivalent to 25% of all Norwegian petroleum production. The plan for development and operation (PDO) for phase 2 was submitted to Norwegian authorities on 27 August 2018.
  • PARTNERS: Equinor 40,0267% (operator), Lundin Norway 22,6%, Petoro 17,36%, AkerBP 11,5733% and Total 8,44%.

Original article link

Source: Equinor





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