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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。
Based on the research results of the maturity parameters of terpenes and steranes published in China and other countries in recent years, this paper proposes a method to determine the maturity threshold by using the molecular parameters of terpenes and steranes. In this paper, the corresponding stereochemistry and molecular weight changes of terpenes and steranes are described with the increase of maturity. The commonly used molecular maturity parameters and published threshold values of mature parameters are described. According to the correlation of oil source and macrogeochemical parameters with terpenes and sterols Alkane maturity parameters to determine the maturity of the source rocks.