Norwegian firm Equinor's Johan Castberg oil field in the Barents Sea has reached its full production capacity of 220,000 b/d, less than three months after coming on stream, the company said today.
The field reached the milestone on 17 June, with only 17 of the planned 30 production wells completed. Equinor plans to drill six more wells to maintain plateau levels and expects the field to remain on stream for at least 30 years.
Castberg holds estimated recoverable reserves of 450mn–650mn bl. Equinor aims to boost this by a further 250mn–550mn bl, partly by developing the nearby Isflak discovery. A final investment decision on Isflak is expected by year-end and start-up is targeted for 2028. The company also plans to drill one or two exploration wells near Castberg every year.
The field came on stream on 31 March this year. Castberg's crude is medium sweet with gravity of 32.7°API and 0.17pc sulphur content, and is rich in middle distillates.
The grade was assessed at a $5/bl premium to North Sea Dated on a cif Rotterdam basis in June, before the escalation of Israel-Iran hostilities — around $3/bl above US light sweet WTI on the same basis.
Castberg's July loading programme comprises 10 cargoes of 700,000 bl each, equivalent to 226,000 b/d.