Libra oil field is a large ultra-deepwater oil prospect located in the Santos Basin, about 230 kilometres (140 mi) off the coast of Rio de Janeiro, Brazil, north of Tupi field.

Libra is located 19 miles (31 km) from Franco and is being drilled by Petrobras contracted by the ANP.

[8] Eleven companies including CNOOC, CNPC, Ecopetrol, Mitsui, ONGC Videsh (OVL), Petrogal, Petrobras, Petronas, Repsol-Sinopec, Shell and Total were approved by ANP to participate in the Libra auction.

Production rights were awarded 21 October 2013 to a consortium led by Petrobras, including France's TotalEnergies and Anglo-Dutch Royal Dutch Shell Plc, who each took 20 percent of the partnership, while China National Petroleum Corp and China's CNOOC took 10 percent each.

Pre-Sal Petroleo SA, or PPSA, a Brazilian government-run firm, will manage development of the country's recently discovered deep-water oil fields.