Global oversupply in crude oil is likely to limit price gains this year despite a series of unplanned outages and shrinking U.S. shale production, a Reuters poll showed on Tuesday.  Wildfires in Canada, political unrest in Venezuela and supply disruptions in Nigeria and Libya have wiped out nearly 4 million barrels of daily production. That has soothed some of the concern about oversupply and helped push oil prices close to $50 a barrel for the first time in seven months. But analysts do not expect annual prices to average much more than that before next year. In the latest monthly Reuters poll, the 33 analysts surveyed forecast a 2016 Brent crude LCOc1 average price of $43.60 per barrel, up $1.30 from a forecast of $42.30 a month earlier. That marked a third consecutive monthly rise […]