煤和泥岩不同温度条件下非烃中咔唑类化合物的演化特征  

Evolutive Characteristics of Carbazole Compounds in Nonhydrocarbon of Coal and Mudstone at Different Temperatures

作　　者：陈祖林[1,2] 张敏[1,2] 高丽丽[1,2] 

机构地区：[1]长江大学地球化学系,湖北荆州434023 [2]长江大学教育部油气资源与勘探技术重点实验室,湖北荆州434023

出　　处：《沉积学报》2011年第3期587-592,共6页Acta Sedimentologica Sinica

摘　　要：在密闭体系中,200～450℃的条件下进行了煤和泥岩加水的模拟实验,分析了实验产物非烃中咔唑类化合物的演化特征,并讨论了不同温度条件下非烃中咔唑类化合物的演化的机理。实验结果表明,非烃中咔唑类化合物是沉积有机质成岩过程的产物,其含量和组成受有机质成熟度影响较大。该研究结果不仅加深了对非烃中咔唑类化合物演化机理的认识,而且为更好的应用咔唑类化合物作为指示剂提供更大的帮助。Through thermal simulation experiments of coal and mudstone in low mature stage（Ro = 0.5% ） from different sedimentary environment in one area at different temperatures （ 200℃, 250℃, 275℃, 300℃, 325℃, 350℃, 400℃ ,450℃ ）added with water in the closed system and separation and GC/MS quantitative analysis and identification of carbazole compounds in sample extracts at different temperatures, this paper discussed the distribution of carbazole compounds in this two kinds of samples at different simulation temperatures. The separation adopt two-step Column Chromatography. And absolute quantification uses N-phenylcarbazole added in neutral nitrogen-containing compounds as an internal standard . Based on simulation experiment, the article analyzes the evolutive characteristics of experimental products-carbazole compounds in nonhydrocarbon and discusses the evolution mechanism of them at different temperatures. The experimental results show that in the coal and mudstone samples the total contents of carbaz- ole compounds and the contents of carbazoles, methylcarbazoles, dimethylarbazoles, benzocarbazoles increase with thermal evolution temperature increasing and reach thire maximum during 325 - 350℃ and show downtrend after 350℃. From these changes, we can see that the formation of the compounds have certain relationship with hydrocarbon generation of rock samples. The changes with temperature of the contents of carbazole compounds depend on release and fission rate of them. The results from experimental data analysis show that contents increase when release rate is more than fission rate and contents decrease contrarily. In fact, the changes with temperature of the contents of carbazole compounds is similar to that of liquid hydrocarbons. According to the thermal simulation experiments, organic matter begin to produce hydrocarbon during 300 - 350℃ and reach thire maximum at about 350℃ in general. It is pointed out that nitrogen-containing compounds in geological body are the products of ro

关 键 词：煤 泥岩 非烃 咔唑类化合物 成熟度 异构化 

分 类 号：P593[天文地球—地球化学]