| 白音查干凹陷稠油特征及其成因 |
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| 引用本文： | 常俊合,张同周,许书堂,黄元湖.白音查干凹陷稠油特征及其成因[J].西安石油大学学报(自然科学版),1998(4). |
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| 作者姓名： | 常俊合 张同周 许书堂 黄元湖 |
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| 作者单位： | 中原石油勘探局勘探开发科学研究院 |
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| 摘 要： | 通过对白音查干凹陷稠油物性及地化特征研究，认为该凹陷稠油宏观上具有高密度、高粘度、高凝固点、低饱和烃含量，饱和烃与芳烃比值小的特征；微观上烷烃色谱及生物标志物特征提供了稠油为两期混合油，成熟度属低～较成熟油的信息．利用同位素技术恢复了达－６井稠油密度，并根据生物标志物及物性特征将该凹陷稠油划分为三级降解油，结合油气藏分布规律及地化特征认为生物降解是造成该凹陷原油稠变的主要原因
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| 关 键 词： | 白音查干凹陷，稠油，生物降解，生物标志物，地球化学特征 |
Characteristics and Genesis of Viscous Crude Oil in Baiyinchagan Sag |
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| Abstract: | The acroscopic feature of the viscous crude oil in Baiyinchagan Sag is higher density,viscosity and condensation point,lower saturation hydrocarbon content,and less ratio value of saturation hydrocarbon to arocomatic hydrocarbon.It is known that the oil is a mixture of the oils formed in two stages,and its maturity is lower to maturer according to paraffine chromatogram and biological markers.The density of the viscous crude oil in the well of Da 6 is regained by the use of stable isotope technique.According to the characteristics of biological markers,the physical property of viscous crude oil,and the distribution of reservoirs,the crude oil is divided into three grades of degraded oil,and it is held that the degradation of organism causes the crude oil thinkening. |
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| Keywords: | Baiyinchagan Sag viscous crude oil biodegradation biological marker geochemical feature |
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