【摘要】 本文根据近几年国内、外发表的萜、甾烷分子成熟度参数的研究成果，提出用萜、甾烷等分子参数确定成熟门限的方法。文中叙述了随成熟度的增加，萜、甾烷相应的立体化学及分子量的变化，常用的分子成熟度参数，已发表的成熟参数界限值，根据油源对比及宏观地球化学参数与萜、甾烷成熟度参数相配合来确定生油岩成熟性的方法。更多还原

【Abstract】 AbstractIn the paper, the methods for determining maturation threshold depth based on some papers recently published both in China and other countries, on steranes and terpanes maturation parameters are discussed. It is found that the stereochemistry and molecular weight of steranes and terpanes change with the increasing maturation The common maturation parameters and published information on threshold of maturation parameters are also presented in this paper. The methods for determining maturity of source rocks are proposed, based on oil-source correlation and by combining steranes and terpanes maturation parameters with macro-organic geochemical parameters.更多还原