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用聚类分析方法对松辽盆地北部黑帝庙油层34块原油样品进行分析,结果表明,该层原油可以分成两大类,三亚类。Ⅰ类原油饱和烃色谱在nC14—nC21范围峰强度最大,Ⅱ类a次之,Ⅱ类b最小。在nC25—nC37范围内,Ⅱ类b原油强度占优势,Ⅱ类a次之,Ⅰ类原油最小。Ⅰ类原油的∑nC21-/∑nC22+比值和nC21+nC22占有优势。采用因子分析方法对黑帝庙原油和109块泥岩样品进行油源对比,结果表明,Ⅰ类原油主要来源于青一段生油岩,Ⅱ类原油主要来源于嫩一段生油岩,嫩二段亦有一定贡献。
Cluster analysis was used to analyze 34 crude oil samples in the Heidimu reservoir in the northern Songliao Basin. The results show that the crude oil can be divided into two categories and three sub-types. The peak intensity of the Ⅰ type crude oil saturated hydrocarbons in the nC14-nC21 range is the highest, followed by the class Ⅱ a and the class Ⅱ b the smallest. In the range of nC25-nC37, the strength of class Ⅱb crude oil is dominant, followed by class Ⅱ a, followed by class Ⅰ crude oil. Class Ⅰ crude oil ΣnC21- / ΣnC22 + ratio and nC21 + nC22 dominant. The results of comparison of oil source of Hei Dami Temple crude oil and 109 mudstone samples by factor analysis show that type Ⅰ crude oil is mainly derived from Qing 1 source rock and type Ⅱ crude oil mainly comes from tender 1 source rock and Nen2 section Have some contribution.