Oil dips on U.S. inventory surge, doubts on OPEC resolve

By Ethan Lou NEW YORK (Reuters) - Oil prices dipped on Thursday as investors were still reeling from a record weekly surge in U.S. crude inventories and many remained sceptical about whether OPEC will actually implement its planned output cap. U.S. crude was down 82 cents, or 1.8 percent, at $44.52 per barrel. Brent crude was down 65 cents, or 1.4 percent, at $46.21 a barrel by 1:31 p.m. EDT (1831 GMT).