Petrobras is a state-controlled oil company in Brazil, founded in 1953. It is one of the largest oil producers in the world and plays a crucial role in the country's energy sector. The company is involved in various activities, including oil exploration, production, refining, and distribution of petroleum products. In addition to oil, Petrobras invests in renewable energy sources and technology to reduce environmental impact. The company operates both onshore and offshore oil fields, with significant operations in the pre-salt layer of the Atlantic Ocean, which has become a major source of oil for Brazil.