(EnergyAsia, Feb 8) — Singapore’s oil, petrochemicals and chemicals companies is expected to show strong growth this year, continuing its momentum from the last two years, said the Economic Development Board.   The EDB said the cluster’s 2004 output rose by 29% to S$50.7 billion, up from S$39.2 billion in 2003. (US$1=S$1.65). Value-added (VA) was…