GENESIS TYPES, DISTRIBTUION AND GEOCHEMICAL CHARACTERISTICS OF NATURAL GAS IN DAGANG OILFIELD
大港探区天然气成因类型、分布和地球化学特征

Based on the geological characteristics and thermal evolution of natural gas in Dagang exploration area, this study has classified genesis of natural gas into six categories: biogenetic gas, low-temperature mixture gas, low-matured gas, matured gas, high matured gas, and coal-genetic gas. In addition, this paper has analyzed the distribution and geochemical characteristics of various kinds of natural gas in Dagang exploration area.