Oil prices hovered above $91 a barrel Monday in Asia, the Associated Press reported. In other Nymex trading in January contracts, heating oil was steady at $2.54 a gallon, gasoline futures fell 0.77 cent to $2.43 a gallon and natural gas dropped 5.3 cents to $4.03 per 1,000 cubic feet. In London, Brent crude rose 32 cents to $94.09 a barrel on the ICE Futures exchange.