By Laila Kearney NEW YORK (Reuters) -Oil prices gained 2.5% on Friday after a U.S. official told Reuters that an immediate Saudi oil output boost was not expected, and as investors question whether OPEC has the room to significantly ramp up crude production. Brent crude futures were up $2.50, or 2.5%, to $101.60 a barrel by 11:39 a.m. EDT (1539 GMT) while West Texas Intermediate crude rose $2.38, or 2.5%, to $98.16. Both benchmarks are on track for their biggest weekly percentage drops in about a month, largely on fears earlier in the week that a nearing recession would chop away at demand. “P…