Harbour Energy started production at the Tolmount gas field in the British North Sea, a source close to the company said on April 25.

Harbour operates and holds a 50% stake in the field along with Dana Petroleum.

The field, whose start-up was initially planned in the first quarter of the year, is expected to reach peak production of 40,000 boe/d.

Harbour Energy took ownership of the field as part of its takeover of North Sea rival Premier Oil last year. Its output will help Harbour reach its 2022 production target of between 195,000 and 210,000 boe/d.

The company downgraded Tolmount’s reserves earlier this year.

Tolmount’s start-up was first reported in a note by Jefferies analysts.