Oil prices edged up on Thursday on optimism that trade talks at the upcoming G20 meeting could help the global economy and improve demand, but gains were curbed after U.S. crude inventories hit their highest in a year. U.S. crude futures CLc1 had risen 20 cents, or 0.4 percent, to $50.49 per barrel by 0737 GMT. The market ended the previous session down 2.5 percent at $50.29 a barrel, after marking its lowest since early October last year. International benchmark Brent crude LCOc1 gained 6 cents, or 0.1 percent, to $58.82 a barrel, having dropped 2.4 percent on Wednesday to $58.76 a barrel. Both markets had climbed more than 1 percent in early Asian trade. “We have seen huge increases in supply and the demand picture is in […]