COMPOSITION CHARACTERISTICS OF NATURAL GAS AND THE MECHAMISM OF ITS GENESIS

Based on the thermodynamic theory and combined with the composition characteristics of natural gas, four types and three sub-types of chemical reactions which might form hydrocarbon gases are studied, Thermodynamic analyses of various kinds of reactions are presented systematically, Meanwhile chemical and geochemical methods are used together not only to study the transformation ratio or the condition of the reactions, but also the relative abundance ratio of hydrocarbon compounds, The mathematic relationships among variables are properly treated, Thus, it simplified the complicated chemical and geochemical problems in geological body.