The group, also made up of Total, Shell and two Chinese firms has won the right to explore the Libra oilfield’s estimated 8-12 billion barrels of recoverable oil reserves for the next 35 years.
Already entitled to a 30 percent stake in the project, as stated in the rules governing the auction of the Libra rights, Petrobras also obtained a further ten percent stake in the field. French oil giant Total and Anglo-Dutch Shell will hold 20 percent each, while Chinese state companies CNPC and CNOOC take ten percent each.