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本文根据生油岩中可溶有机质饱和烃及其重组分——沥青质和不溶有机质干酪报等资料,深入研究了我国中、新生代不同类型沉积盆地有机质随埋深的热演化特征,在此基础上提出了有机质及原油热演化过程六个阶段的划分。通过有机元素、红外、色谱、色谱-质谱联用、顺磁等资料,研究了各热演化阶段有机质的结构组成变化,进一步探索了油气的生成机理和过程。
Based on the data of soluble organic matter saturated hydrocarbons and their heavy fractions-asphaltenes and insoluble organic matter in oil-bearing rocks, this paper deeply studies the thermal evolution characteristics of organic matter in different types of sedimentary basins in the Meso-Cenozoic in China, Based on the proposed organic matter and crude oil thermal evolution of the six stages of the division. The structure and composition of organic matter in each thermal evolution stage were studied by means of organic elements, infrared, chromatography, mass spectrometry-mass spectrometry and paramagnetic data. The formation mechanism and process of oil and gas were further explored.