Scoter and Merganser are two normal pressure and temperature gas-condensate subsea tie-backs to the Shearwater Cluster located in Block 22/30a of the Central North Sea.

Scoter was discovered in 1989 and began production in March 2004, originally from two wells with a third added in August 2006. Merganser was discovered in 1995 and began production in December 2006 from two wells. The Scoter and Merganser fields have been operational as gas-condensate producing fields since 2004 and 2006 respectively. Hydrocarbons from the three Scoter wells and two Merganser wells are produced via the Shell-operated Shearwater Cluster. The Scoter and Merganser fields have exceeded their economic and technical limit. On 9 July 2020, the Oil and Gas Authority (OGA, now the North Sea Transition Authority) formally approved the Cessation of Production from both Scoter and Merganser fields “on or after 31 August 2020”. The fields formally ceased production on 17 December 2020.

Scoter and Merganser Decommissioning Programmes

On 4 April 2022, Shell U.K. Limited submitted, for the consideration of the Secretary of State for Business, Energy and Industrial Strategy, the draft Decommissioning Programmes for the Scoter and Merganser Fields in accordance with the provisions of the Petroleum Act 1998. It is a requirement of the Act that interested parties be consulted on such decommissioning proposals.

Scoter and Merganser are two normal pressure and temperature gas-condensate subsea tie-backs to the Shearwater Cluster, located in Block 22/30a of the Central North Sea. The Fields are 230km and 226km from the nearest UK shoreline respectively. The items / facilities covered by the Decommissioning Programmes are:

  • Installations and subsea infrastructure associated with the Scoter Field, comprising of the Scoter Manifold, Scoter Production Pipeline, Scoter Umbilical and associated tie-in spools, jumpers and stabilisation features.
  • Installations and subsea infrastructure associated with the Merganser Field, comprising of the Merganser Manifold, Scoter Manifold Extension Structure, Merganser Production Pipeline, Merganser Umbilical and associated tie-in spools, jumpers and stabilisation features.

Representations regarding the Scoter and Merganser Decommissioning Programmes should be submitted in writing to Shell U.K. Limited marked for the attention of James Blackburn, Business Opportunity Manager, Decommissioning, Shell U.K. Email: SUKEP-Shell-Decommissioning-Correspondence@shell.com where they should be received no later than the consultation closing date (6 May 2022) and should state the grounds upon which any representations are being made.

4 April 2022

James Blackburn
Business Opportunity Manager, Decommissioning
Shell U.K. Limited
1 Altens Farm Road
Nigg
Aberdeen
AB12 3FY

The Scoter and Merganser DPs are also available on the BEIS website. https://www.gov.uk/guidance/oil-and-gas-decommissioning-of-offshore-installations-and-pipelines

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