Oil prices dipped on Friday on concerns whether major producers would implement an OPEC-Russia deal to reduce production, compounded by data showing output in Russia rose to a post-Soviet high ahead of the announced cutback. The Organization of the Petroleum Exporting Countries (OPEC) and non-OPEC oil production giant Russia this week said they would cut crude output early next year in order to rein in global oversupply that has dogged markets for over two years. But front-month Brent crude futures LCOc1 were down 16 cents, or 0.3 percent, from their last settlement at $53.78 per barrel at 0836 GMT on Friday, as doubts emerged over the viability of the announced cut. U.S. West Texas Intermediate (WTI) futures CLc1 were at $51.06, flat with their last close. Traders said prices were weighed down by concerns over the implementation […]