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本文通过气相色谱—质谱、热解、紫外光谱和其它有机地球化学分析结果,对克拉玛依原油和可能生油岩的有机相性质进行了较详细的讨论,综合分析了正构烷烃,类异成二烯烷烃、甾烷、萜烷、脂肪酸等各类化合物的分布特征,认为克拉玛依原油和石炭系生油岩是海相成困,而二叠系、三叠系和侏罗系沉积是陆相成因。应用原油和生油岩中的甾烷、萜烷和芳烃等化合物的分布特征进行了油源对比,特别是芳烃和干酪根热产物中的甾萜烷的对比结果,说明海相石炭系生油岩是原油的可靠油源。初步研究表明,风成城地区的海相石炭系是一套有机质丰富,生油能力强的好生油岩,目前尚处於低成熟—成熟阶段,并具有自生自储的能力。
In this paper, the organic phase properties of Karamay crude oil and possible source rocks are discussed in detail by gas chromatography-mass spectrometry, pyrolysis, ultraviolet spectroscopy and other organic geochemical analyzes. The effects of n-alkanes, Alkanes, steranes, terpanes, fatty acids and other compounds of the distribution characteristics, that the Karamay crude oil and Carboniferous source rocks are marine into sleepy, and Permian, Triassic and Jurassic sediments are continental origin . The comparison of the oil sources, especially the comparison between the terpenoids in the aromatic and kerogen thermal products, is carried out by using the distribution characteristics of the compounds such as steranes, terpanes and aromatics in crude oil and source rocks, indicating that the marine carboniferous oil Rock is a reliable source of oil. Preliminary studies show that the marine Carboniferous in the Fengcheng area is a good source rock with rich organic matter and strong oil-producing ability. It is still in the low mature-maturity stage and possesses the capability of self-generation and self-storage.