Topaz Gas Field

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UK Oil & Gas Fields

RWE Dea Oil & Gas Fields

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Summary Information

  • Operator: RWE Dea
  • Country: UK
  • Location: Blocks 49/1a and 49/2a Southern North Sea
  • Production start: 2009
  • Partners: Ithaca
  • Type: Gas
  • Estimated Reserves:
  • Production Volume:


  • The Topaz subsea well head and protective structure, is a gas producing seabed installation tied back to the Schooner Gas Field (Tullow) via 15 kms of 6-inch diameter pipeline.
  • Gas is then transported onward to the Caister Murdoch System (ConocoPhillips) and Theddlethorpe Gas Processing Plant


  • Technip: Pipelay, tie-in activities and umbilical supply
  • KWSubsea:
    • FEED of subsea tie-back
    • Detailed design of subsea pipeline tie-back


  • 1987 - Topaz Gas Field discovered
  • 2006 - RWE Dea increased its stake in the Topaz field
  • 2008 - Final investment decision made
  • 2009 - Project development approved by UK Goverment
  • 2009 - First gas produced
  • 2010 - Ithaca acquired a 35% stake from GDF Suez



  1. RWE Dea UK Environmental Report 2012
  2. KWSubsea Subsea References
  3. RWE Dea increases stake in Southern North Sea field
  4. Topaz Gas Field to Progress to Development
  5. RWE Dea commences production from Topaz gas field
  6. Ithaca Energy Acquires North Sea Assets from GDF Suez

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