Shell U.K. Limited is plugging and making safe a number of suspended wells across the Gannet Fields, in line with regulatory timeline and expectations.

The Gannet Field is located within Blocks 21/25, 21/30, 22/21 and 22/26a in the Central North Sea. The development comprises one platform, Gannet Alpha (A), which produces from the Gannet A Field via platform wells and five subsea satellite tiebacks: Gannet B, C, D, F and G.

At this time, Shell U.K. Limited is submitting a Decommissioning Programme seeking regulatory approval to plug and make safe wells at the Gannet B and Gannet F tiebacks. Production will continue from the wider Gannet Field, and Field Decommissioning Programmes will be issued as the Field approaches Cessation of Production (CoP).

Gannet F is located in Block 21/30, comprising a four-well subsea development tied-back approximately 1km to the Gannet A Platform. Gannet B is located in Block 21/25, comprising a two-well subsea development tied-back approximately 5km to the Gannet A Platform. Both Gannet B and Gannet F are located ~170km east from the Scottish coastline and ~82km west from the United Kingdom / Norway median line within a water depth of circa 98m.

Shell U.K. Limited submitted, for the consideration of the Secretary of State for Energy Security and Net Zero, the Draft Decommissioning Programmes for the Gannet Subsea Wells GB01S1 and GF01S1 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. This Decommissioning Programme covers:

• Gannet B01S1 well including Christmas Tree (XT), flowbase and wellhead

• Gannet F01S1 well including XT, flowbase and wellhead.

Public Consultation of the Gannet Subsea Wells GB01S1 and GF01S1 Decommissioning Programme opened 17 October 2024 and will close on 28 November 2024. For any queries, please email SUKEP-Shell-Decommissioning-Correspondence@shell.com

• The Draft Decommissioning Programme is available for download on the OPRED website - https://www.gov.uk/guidance/oil-and-gasdecommissioning-of-offshore-installations-and-pipelines