Alder Gas and Condensate Field

Summary Information

• Operator: Ithaca
• Country: UK
• Location: North Sea
• Production start: 2016
• Partners: Chevron - 70%, Conocophillips - 25%, GDF-Suez - 5%
• Type: Gas And Condensate
• Estimated Reserves: 4,820 million scm of gas (recoverable)
• Production Volume:

Description

• The field was developed as a subsea tieback to the Britannia Gas Field
• The field development consists of drilling of up to two production wells and the installation of subsea infrastructure, including a production manifold, a 27 kilometre (km) production flowline to transport reservoir fluids to the Britannia BLP and a control and chemical umbilical.
• The Alder Field has a maximum estimated recovery of 4,820 million scm of gas over an estimated field life of 10 years.
• The project has a planned design capacity of 110 million cubic feet of natural gas and 14,000 barrels of condensate per day

Contractors

• **Technip:** engineering, manufacturing and installation:
  • the detailed design and pipelay of a 28-kilometer 16” pipe-in-pipe system,
  • the installation of a 28-kilometer hybrid umbilical
  • various subsea works including the installation of a manifold structure including HIPPS, subsea isolation valve structure, valves and spoolpiece components.

History

• 2013 - Technip awarded subsea contract
• 2014 - Final investment decision and regulatory approval
• 2016 - First gas produced
• 2019 - Ithaca energy acquired Chevron's stake
• 2019 - Chrysaor acquired Conocophillips's stake in the field
• 2021 - Premier Oil and Chrysaor merge to create Harbour Energy

Links

1. UK Oil and Gas Fields by Approval Date
2. Serimax Pipeline References
3. Technip awarded subsea contract by Chevron North Sea
4. Chevron Makes Final Investment Decision on Alder Field in the United Kingdom
5. Alder field achieves first gas
6. Acquisition Of Chevron North Sea Limited
7. ConocoPhillips Completes $2.7 Billion Sale of United Kingdom E&P Subsidiaries
8. Harbour Energy to be admitted to trading