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。
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 Da6 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.
出处
《西安石油学院学报》
1998年第4期21-24,共4页
Journal of Xi'an Petroleum Institute
关键词
稠油
生物降解
地球化学特征
油气藏分布
盆地
Baiyinchagan Sag,viscous crude oil,biodegradation,biological marker,geochemical feature
