... 443 Natural Gas Engineering Handbook Dr. Boyun Guo and Dr. AIi GhalamborUniversity of Louisiana at LafayetteChapter IIntroduction1.1 What Is Natural Gas? Natural gas is a subcategory of petroleum ... Types 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 ... liquid petroleum. There are three types of natural gases:nonassociated gas, associated gas, and gas condensate. Nonassociated gas is from reservoirs with minimal oil. Associated gas is the gas...