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The source rocks and crude oils from the Qianjiang Formation (Eocene) in the Jiangban basin have been systematically studied in the present work. Supergene hydrocarboholds are characterized by (ⅰ) high alteration ratio of soluble organic matter over organic carbon and middle ratio of hydrocarbon over organic carbon; (ⅱ) high content of non-hydrocarbon plus asphahene in extracts or crude oils; (ⅲ) sulfur-rich crude oils being an important immature crude oil; (ⅳ) alkane showing high content of phytane, gammacerane and marked even-carbon predominance or odd-carbon predominance; (ⅴ) aromatic biomarkers being distinctly classified into four groups; (ⅵ) pronounced evencarbon predominance in alkyl henzenes. In combination of all geochemical data. it is extrapolated that exploration of immature crude oil in hypersaline environment should be noticed. 相似文献
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原油与生油岩中脱羟基维生素E的发现及意义 总被引:6,自引:0,他引:6
本文报道了检出于中国膏盐地区原油和沉积岩样中的一类新的生物标志化合物——脱羟基维生素E。给出三个同系物的质谱棒状图,并讨论了其可能的地球化学意义。 相似文献
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Reported here is a novel kind of biomarker compounds, dehydroxytocopherol, detected in crude oil and source rock formed in hypersaline lake environment.Mass spectra data of three homologues are given and the possible geochemical significance of these unusual compounds is discussed briefly. 相似文献
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