Oil prices rise awaiting OPEC gathering

Oil prices rose Monday as the market looked ahead to the end of the week when OPEC decides on whether to change its crude production target. Ministers representing members of the Organization of Petroleum Exporting Countries begin arriving in Vienna on Tuesday ahead of the cartel's meeting Friday. Analysts said traders will also tune in this week to two key speeches by US Federal Reserve chair Janet Yellen for clues on the timing of a interest rate hikes in the world's biggest economy.