Oil rose as Israel braced for a possible attack from Iran, a development that would threaten major disruptions in a region that accounts for a third of the world's crude output.
Oil reversed earlier losses and quickly moved higher after it was reported that the US and its allies believe major missile or drone strikes by Iran or its proxies against military and government targets in Israel are imminent.
Oil fell to settle near $85 a barrel, dropping from a five-month high alongside lower equities, as traders assessed diplomatic efforts in the Middle East.
The field is estimated to contain 24 million barrels of oil equivalent gross in recoverable reserves and will be developed as a tie-back to the Brage field.