Oil prices slid 1 percent on Friday and were on track for the biggest weekly falls since October despite hitting three-year highs earlier this week as concerns over growing U.S. production outweighed tightening global supplies. Brent crude futures LCOc1 were trading 68 cents lower at $68.63 a barrel at 1:26 p.m. EST (1826 GMT). On Monday, they hit their highest since December 2014 at $70.37. U.S. West Texas Intermediate (WTI) crude futures CLc1 were trading at $63.65 a barrel, down 65 cents. WTI marked a December-2014 peak of $64.89 a barrel on Tuesday. Both benchmarks were on track for a weekly loss of nearly 2 percent. The International Energy Agency (IEA), in its monthly report, said that global oil stocks have tightened substantially, aided by OPEC cuts, demand growth and Venezuelan production hitting near 30-year lows. But it warned that rapidly increasing production in the United […]