SPECIAL REPORT: Advanced isolation technology allows subsea valve replacement without purge

Gerald MisajonShell Philippines Exploration & ProductionMakati City, PhilippinesRolf Gunnar LieT.D. Williamson Asia Pacific Pty. Ltd.SingaporeAdvanced pipeline-pressure isolation technology allowed Shell Philippines Exploration & Production to replace an export riser shutdown valve at an offshore natural gas production platform without the time and expense of depressurizing and purging the entire export pipeline.Shell faced three alternatives apart from the technology it ended up using.The company could live with a defective emergency shutdown valve (ESDV) at the platform. This choice would effectively rule out proper boundary isolation for shutdown purposes or isolation of the ex...

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