Clair Oil Field

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UK Oil & Gas Fields

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Summary Information

  • Operator: BP
  • Country: UK
  • Location: 75 km West of Shetland, North Sea
  • Production start: 2005
  • Partners: Shell, ConocoPhillips and Chevron
  • Type: Oil
  • Estimated Reserves: 7 billion barrels of oil equivalent
  • Production Volume:


  • The giant Clair field is the UK’s largest hydrocarbon resource, with total volumes initially in place across the entire field currently estimated at more than 7 billion barrels of oil equivalent
  • Due to the highly complex and fractured nature of the reservoir, there has been considerable uncertainty as to how much of the oil could be recovered
  • The Clair field extends over an area of 220km2, in water depths of approximately 140m
  • Oil and gas is exported via pipelines to the Sullom Voe Oil Terminal on Shetland
  • Platform flow rates are 60,000 BPD oil, 100,000 BPD water and 40 MMSCFD gas lift compression
  • The platform topsides comprise three decks, which accommodate all the required facilities for drilling and processing of the produced fluids.
  • The platform jacket for Clair is a four-legged single steel structure of around 165 metres (540 feet) in height.
  • Gas is transported to Sullom Voe on the West Of Shetlands Gas Pipeline System


  • Mustang Engineering: Front end engineering, detail design and project management for the platform
  • Aker Verdal: Fabrication of the platform jacket
  • Kvaerner: Jacket and Piles
  • AMEC: Fabrication and integration of deck
  • Saipem: Installation of platform
  • Stolt Offshore: Construction and installation of the gas import/export system
  • BiFab: Skids/Compression Module


  • 1977 - The Clair field was originally discovered
  • 2001 - The first development phase (Clair Phase 1) was sanctioned
  • 2002 - Major contracts awarded
  • 2004 - Clair rig sets sail
  • 2005 - Production from the Clair field commenced
  • 2009 - Shell stake increases from 18.7% to 28% after acquiring stake from Hess
  • 2011 - AMEC appointed to deliver the engineering and project management services (EPMS) for the main platform design for Clair Ridge


  • A highly complex and fractured reservoir


  1. Saipem Fixed Offshore Production Facilities Project References
  2. Mustang Engineering Platform References
  3. Bifab Platform References
  4. Kvaerner Platform References
  5. FoundOcean Europe Subsea References
  6. AMEC awarded £150 million Clair Ridge design engineering, North Sea
  7. BP Confirms Extension of Giant Clair Field West of Shetland in the UK
  8. Shell in strategic asset swap with Hess
  9. Clair Field Gets Green Light
  10. Stolt Offshore Announces $120 Million of Contract Awards in the North Sea
  11. Major Clair Contracts Awarded
  12. Heavyweight Clair Leaves for the Atlantic
  13. Greater Clair Appraisal Programme Approved

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