It's the first oil auction held under Brazil's new rules that give more power to state-run Petrobras.
The Brazilian firm will be the sole operator and owns a 40 per cent stake of the Libra oil field. It could hold upward of 12 billion barrels.
Both Shell and Total will own 20 per cent, while Chinese companies CNOOC and CNPC each took 10 per cent.
Under the new rules for offshore auctions, Petrobras is the sole operator of fields and must hold a minimum 30 per cent stake in them.
Just 11 firms took part in today's bidding process, fewer than the 40 the Brazilian government hoped to attract.
