Abstract: The analysis of pyrolytic hydrocarbon-generation dynamics characteristics of Ⅰ or Ⅱ₂-Ⅲ₁ type of kerogen is made in mudstone and carbonate rock.It shows that the decisive effect on hydrocarbon-generation dynamics with the same lithology is what types of organic matters are, when the type of organic matter is same, lithologies of different source rocks may affect hydrocarbon-generation dynamics characteristics in some degree, especially in the early and late hydrocarbon-generation periods.With different lithologies, the activation energy distribution of same organic matter is relatively similar.The activation energy distribution of Ⅰ type of kerogen ranges narrowly, being 50 837~ 53 828 cal/mol for mudstone and carbonate rock;that of Ⅱ₂-Ⅲ₁ type of kerogen is wider than that of Ⅰ type of kerogen, and that of mudstone is wider than that of carbonate rock.Finally, according to pyrolysis dynamics characteristics of carbonate rock, a quantitative hydrocarbon-generation calculating model of carbonate source rock section with Ⅰ or Ⅱ₂-Ⅲ₁ type of kerogen is developed in this paper.

Key words: Kerogen type, Source bed, Thermodynamics, Characteristics, Oil generation model