A pumpjack brings oil to the surface in the Monterey Shale, California, April 29, 2013. Oil prices edged higher on Friday as investors closed positions ahead of the end of the year though crude was still heading for a third weekly loss in a row, its longest losing streak in four months. Global benchmark Brent crude prices were trading up 38 cents at $37.44 a barrel at 1000 GMT while U.S. crude futures traded at $35.02 a barrel, a rise of seven cents from Thursday’s close. A global supply glut that brought prices close to 11-year lows this week means Brent oil prices will post losses for a third consecutive year, which would be the first time that has happened since oil trading started in the 1980s. West Texas Intermediate (WTI) futures are set for a second straight yearly loss, the first time that will have happened for the […]