Cygnus Gas Field

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Summary Information

  • Operator: GDF Suez E&P
  • Country: UK
  • Location: Southern North Sea
  • Production start:
  • Partners: GDF SUEZ (38.75%), Centrica (48.75%) and Bayerngas (12.5%)
  • Type: Gas
  • Estimated Reserves: gross 2P reserves of approximately 18 billion cubic metres
  • Production Volume:


  • Cygnus is the largest gas discovery in the Southern North Sea for 25 years
  • The development will comprise: the installation of the Cygnus Alpha (A) hub (a permanently manned complex consisting of three bridge-linked platforms); Cygnus Bravo (B) satellite wellhead platform (a not permanently attended installation); the drilling of ten gas production wells; installation of a 51km 24-inch export pipeline tied in to the existing ETS pipeline; a 5.9km intra-field pipeline to Cygnus B west north-west (292°) of Cygnus A; and associated subsea infrastructure.
  • It is planned that construction will start in April 2013 with first gas expected in 2015
  • The Cygnus partnership plans to invest £1.4 billion to develop the project


  • AMEC: Front End Engineering Design (FEED)
  • Burntisland Fabrications: Design, procurement and construction of four jackets, complete with piles
  • Heerema Fabrication: fabrication and commissioning of four topsides
  • Proserv: Design, engineering and build of wellhead control panels and accompanying topside umbilical termination unit for the Alpha and Bravo platforms


  • 2008 - Tullow sold its stake to Venture
  • 2009 - Successful appraisal well drilled
  • 2010 - Appraisal completed
  • 2011 - AMEC awarded FEED contract
  • 2012 - Project development approved by UK Government
  • 2012 - Major contracts signed by GDF Suez
  • 2012 - Construction starts on Cygnus Alpha Wellhead Platform



  1. Sale of 10 CMS Area blocks to Venture Production plc
  2. AMEC awarded FEED contract for GDF SUEZ E&P UK’s Cygnus field in Southern North Sea
  3. Successful Southern North Sea appraisal well
  4. EIS Report
  5. Second Western Area Well Success Completes Cygnus Field Appraisal
  6. Centrica welcomes shallow water gas field allowance
  7. Cygnus project brings 1,200 jobs to UK
  8. BiFab secures a £47m contract and creates 100 new jobs
  9. Cygnus project award for Heerema Fabrication Group's Hartlepool yard
  10. Proserv wins Cygnus topside controls contract
  11. Construction starts on Cygnus gas development
  12. Scottish Jobs Boost As Cygnus Jacket Fabrication Begins

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