The P-51 Platform, the first semisubmersible platform built entirely in Brazil, capable of producing up to 180,000 barrels of oil per day, started production in the Campos Basin in January 2009, and in February 2009, China agreed to loan Petrobras US$10 billion in exchange for a supply of 60,000-100,000 barrels of oil per day to a subsidiary of Sinopec and 40,000-60,000 barrels of oil per day to PetroChina. In August 2009, Petrobras acquired ExxonMobil's Esso assets in Chile for US$400 million.