Gannet Oil and Gas Field

+++ Summary Information

• Operator: Shell
• Country: UK
• Location: Central North Sea
• Production start: 1993
• Partners: Esso
• Type: Oil / Gas
• Estimated Reserves:
• Production Volume:

+++ Description

• The Gannet complex comprises one fixed drilling and production platform for the Gannet A, B, C, D, E, F and G mature producing fields, located in Blocks 21/25, 21/30, 22/21 and 22/26a in the central North Sea.
• The Gannet complex is situated approximately 180 km east of Aberdeen, 77 km from the UK / Norwegian median line and in a water depth of approximately 95 m (Figure i). It comprises one platform, Gannet Alpha (A).
• Gannet A is a four-legged lifted steel jacket offshore drilling, production and accommodation platform located in Block 21/25. Gannet A is also the host platform for the Gannet B, C, D, E, F and G subsea satellite tie-backs. Gas injection for the subsea satellite tie-backs is also controlled from Gannet A.
• Processed oil is exported through an infield pipeline to [[[Fulmar Oil And Gas Field | Fulmar]]]. Gas from the Gannet field is exported through an infield pipeline into the [[[Fulmar Gas Pipeline]]] to the [[[SEGAL St Fergus Gas Processing Terminal]]].

+++ Contractors

• **RGC Offshore:** Gannet production platform construction
• **Technip:** Engineering, procurement, installation and construction contract for the Gannet F Reinstatement project

+++ History

• 1973 - Gannet Oil And Gas Field discovered
• 1989 - Original Project development approved by UK Government
• 1993 - Production started
• 1996 - E & F Project development approved by UK Government
• 2008 - Shell applied for consent to field re-develop the Gannet A Field
• 2011 - Shell reported a leak from Gannet Alpha platform
• 2013 - Technip awarded a contract for replacement of the Gannet F flowline
• 2021 - Exxon sells its stake to HitecVision

+++ Geology

• The Gannet cluster comprises a mixture of reservoirs with the A and C fields being oil rim reservoirs with a gas cap, the B field is a gas/condensate reservoir and the D, E, F and G fields all contain unsaturated oil without a gas cap.
• The API gravity across the fields varies from approximately 40o in A, C, D, F and G to 20o in the E field.

+++ Links

1. [[[List Of Oil Production Platforms In The UK]]]
2. [[[List Of Oil and Gas Production Platforms In The UK]]]
3. [[[FoundOcean Subsea References]]]
4. Gannet oil leak
5. Gannet A Field Production Increase
6. Shell Gannet field update: SOSREP announces successful removal of gas from pipeline
7. ENVIRONMENTAL STATEMENT GANNET A FIELD PRODUCTION INCREASE
8. Technip awarded a contract by Shell for the Gannet field in the North Sea
9. ExxonMobil to sell U.K. upstream central and northern North Sea assets