Oil rises on tropical storm disruptions, glut forecasts weigh

NEW YORK (Reuters) - Oil prices inched up on Friday as U.S. Gulf of Mexico crude output was halved by disruptions caused by a tropical storm, but concerns over a global crude surplus in the months ahead limited gains.Brent crude futures were up 31 cents to $66.83 a barrel by 1:21 p.m. EDT (1721 GMT). U.S. West Texas Intermediate (WTI) crude futures gained 18 cents to $60.38 a barrel.Brent has climbed 4% so far this week while WTI was on track for a 5% rise. Both registered declines last..