石油实验地质2016，Vol.38Issue(4)：429-437,9.DOI:10.11781/sysydz201604429
泥页岩不同介质中可溶有机质组成差异性及对页岩油富集的意义
Composition difference of soluble organic matter in different media in mudstones and its significance for shale oil enrichment
摘要
Abstract
The composition of soluble organic matter in mudstones is complex and the study of composition diffe⁃rence is not only important to understanding hydrocarbon generation and expulsion processes, but also necessary for us to determine shale oil formation and accumulation mechanisms. Lacustrine shale of the Hetaoyuan Forma⁃tion in the Biyang Sag of Nanxiang Basin was systematically studied to determine the composition difference of soluble organic matter from different media ( including inorganic minerals and kerogen ) . The results were com⁃pared with shale oil and sandstone oil, and their geological and geochemical significance discussed. Results show that, it is mainly because of the similar polarity among various compounds of saturated hydrocarbon that we can hardly distinguish the difference of saturated hydrocarbon component of soluble organic matter in different media, which implies shale oil generation and expulsion processes in source rock. However, there are obvious variations of aromatic composition. The aromatic composition of soluble organic matter in organic medium is similar to shale oil/sandstone oil, but the aromatic composition of soluble organic matter in inorganic medium is different from shale oil/sandstone oil, which reflects the processes of hydrocarbon generation and expulsion. Accordingly, in the primary migration in mudstone, the generated hydrocarbons firstly filled inorganic mineral pores, after achie⁃ving the adsorption capacity of mineral particles, then entering into the micro⁃cracks in source rock and/or sand⁃stone interlayer, finally forming oil and gas enrichment, which was the so⁃called shale oil.关键词
可溶有机质/排烃/油气初次运移/泥页岩/页岩油/泌阳凹陷/南襄盆地Key words
soluble organic matter/hydrocarbon expulsion/primary migration/shale/shale oil/Biyang Sag/Nanxiang Basin分类
能源科技引用本文复制引用
朱景修..泥页岩不同介质中可溶有机质组成差异性及对页岩油富集的意义[J].石油实验地质,2016,38(4):429-437,9.基金项目
中国石化科技部项目“泌阳凹陷陆相页岩油富集主控因素研究”（ P13106）资助。 （）
