Polarled Pipeline

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  1. Crawler assesses condition of deepwater Aasta Hansteen spar pull tubes

    Offshore staff STANSTED, UK – Optical Metrology Services (OMS) has completed remote measurement and inspection of various 230-m (754-ft) long pull tubes for Statoil’s Aasta Hansteen spar project in 1,300 m (4,265 ft) water depth in the Norwegian Sea. Hyundai Heavy Industries is constructing the cylindrical 195-m (640-ft) high, 70,000-ton topsides facility at its Ulsan shipyard in South Korea. This will be capable of producing 23 MMcm/d of oil and gas and of storing 160,000 bbl of condensate. It is due to go online next year, 300 km (186 mi) offshore western Norway and connected to the Shell-operated Nyhamna gas processing plant via the 480-km (298-mi) Polarled pipeline . The location in the Arctic Circle, and the fact that this will be the world’s largest spar platform to date, introduced numerous considerations concerning the steel catenary risers connecting the subsea pipelines to the topsides of the platform. According to OMS, this necessitated detailed and accurate inspection and assessment to determine the internal bore of the pull tubes used to connect the production risers, product export lines and pump caissons via a “pull head” to the topsides cellar deck. Another consideration was the minimal clearance within the pull tubes. OMS deployed an 8LV crawler with visual and 3D laser modules to inspect 16, 230-m (755-ft) long pull tubes and eight caissons to assess: Pipe ovality HiLo misalignment Weld root penetration. Defects or obstructions within the pull tubes as a result of pipe welds or fluctuations in pipe geometry were a possibility, and of concern to Statoil due to potentially serious costly consequences once the platform was positioned at sea, where they could not be remedied. OMS operator Tim Green said: “Much of the pipework to be inspected was in the horizontal position, but in many areas the tool had to handle inclines of up to 20°. “The tool performed excellently in the vertical position, proving the versatility of the technology…Being able to produce standard MS Excel reports with the weld images embedded in the report - linked with the weld profile - is a very useful method of reviewing weld condition. Also having a permanent visual inspection record of the root pass of a weld is a valuable asset.” 01/20/2017 

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    Fri, 20 Jan 2017

  2. Statoil announces first-stage laying of Polarled gas pipeline

    Statoil is operator during the development of the Polarled project and therefore responsible for laying the pipeline between Aasta Hansteen and Nyhamna. 

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    Fri, 27 Mar 2015

  3. Polarled gas pipeline now in place

    The final pipe in the 482.4 kilometre long Polarled gas Pipeline was laid at the Aasta Hansteen field at a depth of 1,260 metres in the Norwegian Sea.

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    Tue, 29 Sep 2015

  4. Polarled pipeline installation under way from Norwegian Sea

    The Solitaire pipe-laying vessel has started Stage 1 of the Statoil ASA-operated Polarled installation project connecting Aasta Hansteen field in the Norwegian Sea to Nyhamna in western Norway.

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    Fri, 27 Mar 2015

  1. Polarled pipelay nears completion point at Aasta Hansteen

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    Mon, 24 Aug 2015

  2. Statoil: Polarled Pipeline now in place

    On Sept. 28, the final pipe in the 482.4-kilometer-long Polarled Pipeline was laid at the Aasta Hansteen field at a depth of 1,260 meters in the Norwegian Sea, according to Statoil.

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    Wed, 30 Sep 2015

  3. Statoil: Polarled gas pipeline crosses Arctic Circle

    The Statoil ASA-operated Polarled gas pipeline construction project reported crossing the Arctic Circle. The line will connect Aasta Hansteen field in the Norwegian Sea to Nyhamna in western Norway.

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    Fri, 21 Aug 2015

  4. Solitaire starts work on Polarled pipelay in Norwegian Sea

    Allseas’ Solitaire has started laying Polarled , the first pipeline to extend Norway’s gas infrastructure into the Arctic Circle.

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    Fri, 27 Mar 2015

  5. DNV GL to provide surveillance on Statoil’s Polarled pipeline

    Statoil has contracted DNV GL to provide pipelay surveillance for quality assurance during the Polarled installation. 

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    Wed, 13 May 2015

  6. Last piece of Statoil’s Polarled pipeline now in place

    The final pipe in the Polarled pipeline project is now in place in 1,260 m (4,133 ft) of water at the Aasta Hansteen field. 

    Online Articles

    Online Articles

    Tue, 29 Sep 2015

  7. New contracts for Polarled pipeline from Statoil

    Statoil has awarded the fabrication contract for linepipe to the Polarled project, the coating contract, and the pipe-laying contract.

    Online Articles

    Online Articles

    Tue, 19 Feb 2013

  8. Kongsberg assigned Polarled gas pipeline subsea tie-ins

    Statoil (OSE:STL) has contracted Kongsberg Oil & Gas Technologies (KOGT) to supply subsea structures, in-line tees, and tie-in and connection systems for the Polarled gas pipeline in the Norwegian Sea.

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    Online Articles

    Wed, 14 Aug 2013

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