Oil and gas firm Aker BP has started production at its Valhall Flank West unmanned installation in the North Sea-based Valhall Field, the Norwegian company said on Dec. 17.

The 5.5 billion crowns (US$600.38 million) development aims to produce about 60 million barrels of oil equivalent at a break-even price of $28.50 per barrel, the company added in a statement.

Aker BP, 30% owned by BP, holds 90% stake in the Valhall license, while Kerogen Capital-backed oil firm Pandion Energy has the remaining 10%.