Carbon Isotope Research on N-Alkane Elements of Asphaltic Residues in Hydrocarbon Source Rock
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摘要: 对不同类型烃源岩残留沥青中nC15正构烷烃分子碳同位素特征的研究表明,古生界海相碳酸盐生油岩和中生界淡水湖相泥质生油岩的nC15正构烷烃分子呈富12C的碳同位素组成特征;沼泽相腐殖煤的正构烷烃分子呈富C15的特征。煤系暗色泥岩的正构烷烃分子碳同位素组成介于两者之间。沉积环境和有机母质性质是制约烃源岩正构烷烃分子碳同位素特征的主要因素。nC15正构烷烃分子系列碳同位素特征不仅是一个良好的油-岩对比和原油成因判识指标,而且还可用于煤成油的进一步划分对比。Abstract: Carbon isotope research on the characteristics of nC15 N-alkane elements in different types of as-phaltic residues from hydrocarbon source rock reveals a rich 12C property of caro bn i so topic com posi do nfor nC15 N-alkane elements in marine carbonate source rock of Palaeozoic and lacustrine-facies argilla-ceons source rock of Mesozoic as well as a rich 13C property for N-flkane elements in paludal faciessapro
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Key words:
- scoree rock /
- N一Alka ne /
- carbon isotope /
- oil source correlation
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2 张文正.咎川莉.李先奇等.塔里术盆地凝析油单体烃碳同位素特征与成因分析.沉积学报.1995,13(40 109-115.
3 杨俊杰.裴锡古.中国天然气地质学鄂尔多斯盆地.北京:石油工业出版社,1996, 107-112. -

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