东濮凹陷煤系有机质地化特征及生烃演化模式

GEOCHEMICAL CHARACTERISTICS OF THE ORGANIC MATTER IN COAL MEASURES OF DONGPU DEPRESSION, AND ITS EVOLUTIONARY PATH

许化政

Xu Huazheng

石油工业部中原油田勘探开发研究院

Research Institute for Exploration and Development of Zhongyuan Oil Field, Ministry of Petroleum Industry

本文通过对煤系有机质各项资料的分析和研究,系统地阐述了煤系有机质的组成和地化特征,同时通过热模拟实验对煤系有机质的成烃机理也进行了研究。通过研究,作者认为,煤系有机质与生油岩有机质无论是成因上或是原始组成上均有显著差别,同时作者把煤系有机质演化过程划分为未成熟(褐煤以前)、成熟(长焰煤—焦煤)、过成熟(瘦煤—无烟煤)三个阶段。

Through the analysis and the study of organic matter in coal measures, the geochemical characteristics and the composition of the organic matter are systematically expounded in this paper. Under thermal simulation experiments, the mechanism of the hydrocarbon generation of the organic matter in coal measures is also studied. It is suggested that the organic matter of coal measures differs significantly from that of oil source rocks both in origin and in original composition.The evolutionary processes of the organic matter of coal measures are devided into three stages, i.e. immature stage (prior to brown coal); mature stage (from flame coal to coking coal); overmature stage (lean coal-anthracite).

https://doi.org/10.11781/sysydz198702087