One company looks set to come out on top in a battle for the acquisition of the Petrobras-owned Bauna asset, located in Brazil’s Santos basin.

Australian player Karoon Gas bid aggressively in the latest re-bid, to edge out Brazilian rival PetroRio, Upstream understands.

Petrobras is a long way from confirming the outcome, but industry sources suggested Karoon’s offer was higher than $750 million, while PetroRio’s final offer was closer to the $600 million mark.