North Sea Pipelines- Conclusion: Dual-diameter pigging reaches new extremes; Langeled looms

Statoil has extensive experience in both dual-diameter pigging of subsea pipelines and the environmental ramifications of pipeline commissioning. This second article in a two-part series discusses pig design for dual-diameter systems and the environmental aspects of commissioning operations, presenting relevant field experience.This concluding article also elaborates on Statoil’s commissioning concept for the 1,200-km Langeled project from Norway to the UK, scheduled for commissioning in 2006-07.The first part of the series (OGJ, Nov. 21, 2005, p. 66) discussed commissioning concepts for single and multidiameter pipelines; air drying of internally coated, export-gas-quality pipeline...

Why Register?

Non-subscribers can only view whitepapers by providing name, home and email address, phone number and other information and comment on/rate articles.

Why Subscribe?

Oil & Gas Journal subscribers with login credentials can access these premium features of OGJ Online:

  • Current Issue – an html version of the current week's issue of Oil & Gas Journal.
  • Past Issues – An Electronic OGJ Archive. A keyword-searchable archive of all issues of Oil & Gas Journal dating back to 1990; also searchable by issue date.
  • Market Journal – a weekly round-up of the oil and gas markets, with observations from leading analysts.
  • Editor's Perspective – a short article of insight and opinion by the Editor of Oil & Gas Journal.
  • OGJ Industry Stats – quick access to current industry statistics from Oil & Gas Journal.
  • OGJ Survey Downloads - quick access to exclusive reports from Oil & Gas Journal.


Subscriber Help or Subscribe

Oil & Gas Journal Subscribers: Have your subscription number (from the mailing label on the cover of your Oil & Gas Journal) and e-mail address ready to set up your online account through Customer Service Assistant.

If you're not an Oil & Gas Journal subscriber, start a subscription and gain access to the subscriber areas of OGJ Online now.

Stay Connected