Woollybutt Oil Field

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Summary Information

  • Operator: ENI
  • Country: Australia
  • Location: 80 km from the town of Onslow
  • Production start: 2003
  • Partners: ENI, Exxon, Tap Oil
  • Type: Oil
  • Estimated Reserves:
  • Production Volume:


  • The Woollybutt Field is located in permit WA-25-L off the coast of Western Australia, approximately 40km west of Barrow Island
  • During production, the field development consisted of four subsea wells (WB1, WB2A, SB1 and WB4) that produced through subsea wellheads and flexible flowlines to a double-hulled FPSO vessel, Four Vanguard FPSO
  • The field has ceased production


  • Keppel: FPSO construction
  • Premuda: carried out the detailed design, procurement, fabrication, tanker conversion and FPSO installation for the development
  • NKT Flexibles: Risers
  • ICON Engineering: Project Management and Design Engineering for the Scalybutt Tie back Project


  • 1997 - Woollybutt Oil Field discovered
  • 2003 - FSPO delivered
  • 2003 - Woollybutt Oil Field production started
  • 2008 - Woollybutt South Development completed
  • 2012 - Production on the field ceased



  1. Woollybutt, Decommissioning
  2. NKT Flexibles, Woollybutt, Australia
  3. Premuda, Woollybutt Project Overview
  4. Icon Engineering Platform References
  5. Keppel Shipyard reaffirmed as a preferred yard by Vanguard with the completion of their first FPSO
  6. Eni: started production from Woollybutt field, Australia
  7. Completion of Woollybutt South Development and Woollybutt Production Start Up

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