(Bloomberg) -- Petroleo Brasileiro Chief Executive Officer Jean Paul Prates is seeking a meeting with Luiz Inacio Lula da Silva to see if the president supports him in the role amid speculation about his departure that caused shares to swing wildly earlier Thursday. Most Read from BloombergTexas Toll Road Takeover to Cost Taxpayers at Least $1.7 BillionS&P 500 Falls 1% as Oil Jump Spurs Flight to Bonds: Markets WrapApple Explores Home Robotics as Potential ‘Next Big Thing’ After Car FizzlesKim J