摘要
在论述煤中存在共价键交联结构和非共价键缔合结构的基础上,进一步提出水进相成煤环境有利干煤中类脂物的保存和煤的非共价键缔合结构发育,有利于煤成烃。应用固体13C核磁波谱分析技术,采用自然演化与热压模拟相结合探讨了干酪根热演化过程中碳骨架与官能团的变化规律,提出脂碳是生烃主要贡献者。在对比研究不同母质类型的湖相泥岩、煤和煤系泥岩干酪根中碳骨架与官能团组成属性及其在热演化“液态窗”阶段的倾油倾气性,进而提出亚甲基[(-CH2-)n]是干酪根官能中生油的主体,煤成油的实质就是煤干酪根中存在一定数量的亚甲基官能团。这一认识适用于湖相生油和海相生油的研究。
On the basis of described covalent bond cross-linked structure and non-covalent bond associated structure in coal measures, this paper further presents the water invasion phase coal-forming environment is favorable for preservation of coal lipids, development of non-covalent bond associated structure of coal measures and formation of coal-derived hydrocarbons. Solid 13C nuclear magnetic resonance spectrometer and natural evolution combining with thermocompression simulator are used for analysis of variation of carbon matrix and functional group in the course of kerogen thermal evolution, showing that lipid carbons mainly contribute to the hydrocarbon generation. This paper also makes a correlation of carbon matrix and functional group composition attributes in different parent materials like lacustrine facies shale, coal and coal measure shale kerogen, as well as their tendencies of oil or gas generation during the period of thermal evolution of liquid window, indicating that methylene[ (-CH2-)n ] is a dominant function of hydrocarbon generation from kerogen and the key factor for coal-derived crude oil is that a certain number of methylene functional groups existing in coal-formed kerogen. This knowledge is applicable for research of lacustrine and/or marine hydrocarbon generation.
出处
《新疆石油地质》
CAS
CSCD
2004年第4期351-354,共4页
Xinjiang Petroleum Geology
关键词
共价键交联结构
非共价键缔合结构
^(13)C核磁波谱
油潜力碳
气潜力碳
covalent bond cross-linked structure
non-covalent bond associated structure
13C nuclear magnetic spectrum
carbon with oil potential
carbon with gas potential
