In this paper,a general formula applicable for mixing gas source material including sapropel type Kerogen and humic type Kerogen was built up,based on the formulas given by previous scholars.

• 在前人判别煤型气和油型气母质类型和转化程度公式的基础上 ,建立了既适用于煤型气又适用于油型气母质来源的统一的判别公式。