... 1.1 What Is Natural Gas? 1 1.2 Utilization of Natural Gas 2 1.3 Natural Gas Industry 4 1.4 Natural Gas Reserves 5 1.5 Types of Natural Gas Resources 6 1.6 Future of the Natural Gas Industry ... of Natural Gas ResourcesThe natural gases can be classified as conventional natural gas, gas intight sands, gas in tight shales, coal-bed methane, gas in geopressured res-ervoirs, and gas ... ($/Mcf)U.S. Wet Natural Gas Production (Mcf)YearFigure 1-4 U.S. natural gas price from 1978 to 2003(Louisiana Department of Natural Resources 2004).YearFigure 1-3 U.S. natural gas production...