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Pig Trap news and technical articles from Oil & Gas Journal. Search Pig Trap latest and archived news and articles

  1. PIG-TRAIN ISOLATION DESIGN DEVELOPED FOR NORTH SEA ESV WORK

    Magazine Articles

    Mon, 26 Aug 1991

    blocked drain line, and the limited number of pig trap connections meant that the pig trap had to be drained via the door. Sampling of the ..... vent system to bring these pigs back into the pig trap . ACKNOWLEDGMENT Contributing to this article

  2. MECHANICAL ISOLATION TOOL FOR ESD VALVE SERVICING UNDER DEVELOPMENT

    Magazine Articles

    Mon, 10 Oct 1994

    valves on the Beryl riser (two pig - trap isolation valves and one ESD valve ..... was not enough time to procure a pig trap closure with a suitable penetration ..... the riser, with access from the pig trap . The pig train consisted of a slug

  3. INDUSTRY BRIEFS

    Magazine Articles

    Mon, 5 Oct 1998

    Petroleum Co. Norway under its Ekofisk redevelopment program (OGJ, Sept. 7, 1998, p. 32). The platform served as a pig trap and metering point for gas being exported to Emden, Germany. Statoil said abandoning 2/4-S will trim 30 million

  4. Equipment/Software/Literature

    Magazine Articles

    Mon, 24 Dec 2001

    process control systems are typically used to support 'permit to work' procedures during safety relief valve changeover, pig trap loading and retrieval, and filter changeover. These new safety devices can be integrated with most quarter-turn and

  5. Field experience shows how to inspect odd, noninspectable platform risers

    Magazine Articles

    Mon, 9 Feb 2004

    have radii of 15 D. Unfortunately, each riser contains one forged unbarred T-connection at some distance from the pig - trap . Additionally, this T-connection has an ID reduction of some 10%. Another requirement of ENAP was to inspect a 10

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

    Magazine Articles

    Mon, 28 Nov 2005

    and gauging, hydrotesting, dewatering with air, drying with air, nitrogen purging, and gas filling. A temporary pig trap will be included at the subsea valve station at Sleipner. LLS will be operational, transporting sales gas, prior to

  7. European pipeline spills down in 1995

    Magazine Articles

    Mon, 19 May 1997

    gross 280 cu m of naphtha) was caused by mechanical failure in the form of an incorrectly manufactured modification to a pig trap . About 71% of the spillage was recovered. Cleanup took 15 days and was estimated at $1.5 million. Copyright 1997

  8. PRESSURE-TESTING METHOD PERMITS LINE-SEGMENT ISOLATION

    Magazine Articles

    Mon, 31 Dec 1990

    to change a 26-in. valve at the head of a riser. The valve in question was one of several in-line adjacent to a pig trap , all of which needed to be refurbished. The alternative to using the new system would have been to hydrotest the entire

  9. NORTH SEA ESV PROGRAM IS FOCUS OF SUMMER WEATHER WINDOW

    Magazine Articles

    Mon, 7 May 1990

    moved six ESV's on its Brae Platforms A and B. On both structures, ESV's had originally been installed in the pig - trap areas close to wellheads. The new ESV's were installed under the platforms as near the top of the risers as possible

  10. LIKELY CAUSE OF GULF ACCIDENT PINPOINTED

    Magazine Articles

    Mon, 23 Apr 1990

    the ARCO platform. The line was being cut to install a pig trap . Sonat, meanwhile, has paid $30 million to settle several ..... was no oversight of the contractors' activities. The pig trap was being installed below Sonat's 18 in. shutdown valve

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