Yuji Okada and Shigeru Sato: Petroleo Brasileiro SA, Brazil’s state-controlled oil company, will invest $15 billion on overseas oil projects, aiming to double its crude oil production to capture growing demand in Asia and South America. The Rio de Janeiro-based company plans to expand its oil output to 4.15 million barrels a day by 2015 from the current 2 million barrels, Jose Sergio Gabrielli, president of Petroleo Brasileiro, known as Petrobras, told reporters in Tokyo today. The company will allocate $1.5 …