碳酸盐烃源岩演化程度评价的几个问题

Several Problems with Evaluation of Evolutionary Level of Carbonate Rock

在理论与实践的基础上，就如何准确地评价碳酸盐烃源岩的成熟度进行了深入探讨。研究表明，完善沥青反射率演化指标应从研究不同成因、不同结构类型沥青的特殊演化规律入手；芳香化合物由于其特殊稳定性，是评价碳酸盐岩演化程度的一个极其重要的信息源；沥青质具较强的抗后生变化能力，适用于研究高演化碳酸盐岩。此外，还讨论了分析芳烃馏分及高分子化合物的新技术。

This paper discusses the methods to accurately evaluate maturity of carbonate hydrocarbon source rock based on theory and practice.Synthetic study shows that perfecting bitumen reflectance index should begin with study of special evolutionary pattern of bitumen with different genesis and structures,that aromatic compounds are an important gcochemical information source for evaluating evolutionary level of carbonate rock as they have unique stability,and that asphaltene is suitablc to be used to evaluate highly-matured carbonate rock for its great ability of resistance to epigenesis.In addition, new techniques of analyzing aromatic fractions and high molecular weight compounds are also presented in this paper.