First production from Trestakk
The Trestakk subsea field on Haltenbanken in the Norwegian Sea has has produced first oil. Tied back to the Åsgard A floating production vessel, the field has estimated recoverable resources of 76mn barrels of oil. Field production started on time, below budget and without any serious incidents, according to project partners Equinor (operator; 59.1%), ExxonMobil (33%) and Vår Energi (7.9%).
When the project was approved by the authorities in 2017, the project was expected to cost some NKr5.5bn (current; $0.64bn). On field start-up the final costs are expected to be NKr5bn.
The Trestakk field development comprises a subsea template with four well slots and one satellite well. A total of five wells will be drilled – three for production and two for gas injection.
The original lifetime of Åsgard A was until 2019; however, last winter the Norwegian Petroleum Safety Authority Norway and the Norwegian Petroleum Directorate approved the application for extending the lifetime of the installation to 2031.
When Trestakk comes fully onstream it will produce around 22,000 b/d of oil. Peak production will be around 44,000 b/d. Field production is expected to last for 12 years.
Field illustration of Trestak