Oil prices rallied in Asia today as traders celebrated a fresh round of quantitative easing announced by the US Federal Reserve.New York's main contract, light sweet crude for delivery in October surged 65 cents to 98.96 dollars a barrel and Brent North Sea crude for November delivery added 56 cents to 116.44 dollars. Brent crude for delivery in October had last evening soared to a four-month high of 116.90 dollars before closing.