Reuters UK | Oil dips on US inventory build, defies OPEC-led cut efforts Reuters UK LONDON Oil prices fell on Wednesday after industry data showed a surprise increase in U.S. crude inventories despite OPEC-led output cuts that Saudi Arabia and Russia want extended. Brent crude was down 15 cents at $51.50 per barrel by 0851 GMT. OPEC Risks Deal Fatigue as Maintaining Oil Curbs Get Tougher Oil prices under pressure amid fresh concerns about US supply Oil dips on rising US crude inventories, defies expected supply cut extension |