Crude oil prices rose around 1 percent on Friday after U.S. inventories fell for a fourth straight week, although prices were set for a weekly drop on a stronger dollar. Oil saw steep falls earlier this week as a resurgent dollar weighed on the market amid concerns U.S. crude supplies may have started rising again after three weeks of draws. North Sea Brent crude has shed more than 3 percent this week, its second straight weekly loss, while U.S. crude is set to end a record weekly winning streak with a loss of more than 2 percent.