According to preliminary statistics by the National Agency of Oil, Gas and Biofuels of Brazil (ANP), total oil and gas production in Brazil reached a record high in December 2014, with about 3,096 mboe/d, including 2,497 mb/d of oil and 95.1 mcm/d of gas. This represents an 18% increase in oil production compared to December 2013 and a 5.9% increase over November 2014. Natural gas production rose by 17% compared to December 2013 and by 3.8% compared to November 2014. About 92% of oil and gas production came from fields operated by Petrobras and the bulk of the production came from offshore fields (93% for oil and 76% for gas). The Roncador field in the Campos basin was the largest oil production field with an average of 331,500 bbl/d, while the Lula field, in the Santos basin, was the largest producer of natural gas, with an average production of 10.3 mcm/d. Pre-salt oil production reached 667 kb/d of oil and 23.6 mcm/d of gas in December 2014.