UK private equity-backed independent Neptune Energy has started production from the Duva oil and gas field in the Norwegian North Sea.

Duva is tied back to the Neptune-operated Gjoa field. It is the second Gjoa satellite to start up this year after the Gjoa P1 project came on line in late February. At plateau, Duva will add around 30,000 b/d of oil equivalent (boe/d) to Gjoa production. Gas makes up 56pc of the field's estimated 71mn boe of reserves, according to Neptune.

Duva had been due on stream in early 2021 but commissioning was delayed by the Covid-19 pandemic. Neptune holds a 30pc operating stake in the field. Japan's Idemitsu and Polish state-controlled PGNiG also have a 30pc share each. Norwegian oil and gas firm Sval Energi owns the remaining 10pc.