CNBC | Oil prices rise, but head for weekly loss on oversupply worries CNBC Oil prices were higher on Friday, but still headed for a third weekly loss after Saudi Arabia warned of oversupply, while a slump in stock markets and concerns about trade clouded the outlook for fuel demand. "More of the same is expected in the near ... Third consecutive weekly loss looks likely for oil Oil falls on oversupply worries despite Iran sanctions Oil Heads For Third Weekly Slump as Market Selloff Accelerates |