press release

Chevron Announces First Gas at U.K. Alder Field

Chevron North Sea Limited today announced it has started production at Alder, a high-pressure, high-temperature (HPHT) gas condensate field in the Central North Sea.

"First gas at Alder represents a significant milestone for Chevron and highlights our commitment to investing and developing resources in the U.K.," said Greta Lydecker, managing director, Chevron Upstream Europe. “The safe and successful completion of this project was underpinned by strong collaboration between Chevron and Alder co-venturer ConocoPhillips. Alder supports our goal of helping to maximize the economic recovery of the U.K., adds significant production to our portfolio, and helps extend the field life of Britannia, an important asset to Chevron in the North Sea," added Lydecker.

Andy Samuel, chief executive at The Oil and Gas Authority, said: “We are very pleased to see the safe flow of first gas from the Alder Field. Chevron’s application of innovative subsea technologies and use of the U.K.’s experienced supply chain is closely aligned to the Maximising Economic Recovery Strategy, adding reserves and extending the life of an existing asset.”

Alder is a single subsea well tied back, via a 28 kilometre pipeline, to the existing ConocoPhillips-operated Britannia Platform, in which Chevron holds a 32.38 percent non-operated working interest. The project has a planned design capacity of 110 million cubic feet of natural gas and 14,000 barrels of condensate per day. Production from the HPHT Alder Field is expected to ramp up over the coming months.

journey to first gas

journey to first gas

Follow Chevron’s U.K. Alder Field on its journey from discovery to first production and learn how technology has unlocked its potential.

More than 70 percent of the Alder development work was executed by U.K. based companies, providing significant investment to the U.K. supply chain. The contracts supported several hundred jobs across a range of U.K. locations including Aberdeen, Invergordon, Leeds and Newcastle.

Discovered in 1975, the development has been enabled through the application of innovative subsea technologies designed to meet the temperature and pressure challenges of Alder. Key technologies have included a number of firsts for Chevron in the North Sea, including a vertical mono-bore subsea tree system; a subsea high integrity pressure protection system (HIPPS); and a specially designed corrosion monitoring system to measure the real-time condition of the production pipeline.

Notes to editors

  • The Alder Field was discovered in 1975.
  • Alder is a high-pressure; high-temperature (HPHT) gas condensate field located around 100 miles (160 km) from the Scottish coastline in the Central North Sea, in water depths of approximately 492 feet (150 m).
  • Alder is a single subsea well tied back to the existing Britannia Bridge Linked Platform (BLP) via a 17.4 mile (28 km) production flowline.
  • Alder produced fluids are processed at a dedicated module attached to the Britannia BLP. Alder condensate will be exported via the Forties Pipeline System to Grangemouth terminal and gas exported to the Scottish Area Gas Evacuation terminal at St Fergus, near Peterhead, Scotland.
  • The project has a design capacity of 14,000 barrels of condensate and 110 million cubic feet of natural gas per day.
  • Alder brings a new stream of production to Chevron and the U.K. while helping to extend the field life of Britannia.
  • More than 70 percent of Alder’s key contracts were placed with U.K. companies.
  • Technology and innovation have been key to unlocking the potential of the Alder Field.
  • Alder is operated by Chevron North Sea Limited (73.7 percent); ConocoPhillips (U.K.) Limited holds a 26.3 percent interest in the field.

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