Output from Shell-operated Ormen Lange, Norway’s second-largest gas field and one of the key external gas supply sources for Britain, has been gradually declining since its 2012 peak.
The company postponed plans to artificially increase the field’s pressure to pump out more gas in 2014 due to high costs.
With costs having fallen since, the company and its partners, including Norway’s Equinor and ExxonMobil, now aim to choose between two proposals to improve output and recoverable reserves, said Rich Denny, head of Shell’s operations in Norway.