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通过原油地化特征分析 ,明确了松辽盆地南部黑帝庙油层低熟油油源及油藏分布规律。该地区的黑帝庙油层低熟油相对密度、饱和烃含量高 ,沥青质含量很低 ,饱芳比高 ;正构烷烃OEP值平均为 1.3 4,Pr/Ph值平均为 1.5 3 ,孕甾烷、升孕甾烷含量较低 ,甲基甾烷和重排甾烷不多 ,三环萜烷含量低 ,正规甾烷呈“V”字形分布 ,以ααα2 0RC2 9甾烷为主 ,表明水生生物和陆生高等植物贡献均较大。低熟油主要来源于嫩江组暗色泥岩。黑帝庙油层近期勘探方向应在新北—新立、塔虎城、大老爷府、红岗南、黑帝庙等地区。
Based on the analysis of geochemical characteristics of crude oil, the distribution pattern of low-mature oil and reservoir in Heidimu reservoir in the south of Songliao Basin was clarified. In this area, the relative density of low-mature oil, high saturated hydrocarbon content, low asphaltene content and high aromatic saturation ratio of Heishipu oil layer in the area; the OEP value of n-alkanes was 1.3 4 on average, the average Pr / Ph value was 1.53, Alkane, rising pregnane content is low, methyl sterane and rearrangement sterane few, tricyclic terpane content is low, regular sterane was “V” -shaped distribution, alpha α 2 0RC2 9 sterane mainly aquatic Biological and Terrestrial higher plants contribute more. Low-grade oil mainly comes from Nenjiang dark mudstone. The recent exploration direction of the black emperor Temple oil reservoir should be in the new North - the new legislation, Tower Tiger City, the Grand Royal House, Hong Kong South, Temple and other regions Black Temple.