An oil price surge triggered by a successful OPEC agreement to cut production could be snuffed out as supply surges back, according to the head of International Energy Agency. If OPEC members agree to limit supplies at their meeting next week, prices could rise to $60 a barrel and trigger a jump in global output, particularly from U.S. shale producers, Fatih Birol, executive director of the Paris-based IEA, said during an interview with Bloomberg Television. The output boom could put downward pressure on prices again within nine months to a year, he said. Brent crude, the global benchmark, has rebounded about 10 percent from a three-month low earlier this month to trade near $50 a barrel in the run up to the Nov. 30 meeting by Organization of Petroleum Exporting Countries in Vienna, where ministers will try to implement supply curbs first outlined in late September. Futures traded at […]