UK junior Egdon Resources has started oil flows at the onshore Wressle oilfield in England, where first output had been expected last year.
The field — situated in North Lincolnshire licences PEDL 180 and 182 — has been placed on continuous 24-hour test production after operations to recomplete the well and reperforate the Ashover Grit reservoir interval were completed.
Egdon and its partners are now in the regular well clean-up phase as the well is brought onstream.
"Produced oil from Wressle will be transported by road tanker to the Phillips 66 Humber refinery and sold under Egdon’s existing oil sales contract," London-listed Egdon said.
Egdon operates Wressle on 30% and is joined by Union Jack Oil on 40% and Europa Oil & Gas on 30%.
Europa chief executive Simon Oddie said: “The successful and safe completion of operations to recomplete and reperforate the Wressle-1 well on schedule, in spite of the ongoing pandemic and associated lockdown, is testament to the professionalism and expertise of the team on the ground.
"With Wressle-1 currently on continuous 24-hour test production, I look forward to providing further updates once it has cleaned up and flow rates have stabilised."
Union Jack said in a brief statement: "Wressle oilfield plays a key role in meeting the UK's energy needs as locally sourced and produced oil can significantly reduce the industry’s carbon emissions by cutting transport and decreasing the need for imported energy sources."
Egdon had said in August that it was still at that time on track for first oil from Wressle before the end of 2020.