陕北斜坡东部上古生界山西组烃源岩有泥岩型和煤岩型两种。为了能够准确地评价研究区两种烃源岩的优劣,本次研究进行了较为全面的烃源岩样品选取和分析化验工作,并从有机质丰度、有机质类型和有机质成熟度三个方面对烃源岩进行综合研究。结果表明,山西组暗色泥岩样品总体已属于烃源岩范畴,其中烃源岩主要以中等-好级别为主,有机质类型为Ⅱ2型和Ⅲ型,处于高成熟-过成熟生气阶段;山西组煤系烃源岩为较差烃源岩,有机质类型为Ⅲ型,处于过成熟生气阶段。 The Upper Paleozoic Shanxi Formation source rocks in the eastern part of northern Shaanxi slope are mudstone type and coal rock type. In order to accurately evaluate the advantages and disadvantages of two source rocks in the study area, this study conducted a relatively comprehensive selection of source rock samples and analysis of laboratory work, and from three aspects of organic matter abundance, organic matter types and organic matter maturity Comprehensive study of source rocks. The results show that the dark mudstone samples of Shanxi Formation are generally belong to the source rock category, of which the source rocks are mainly medium-good grade, the organic matter types are Type II2 and Type Ⅲ, and are in the stage of high maturity-over maturity; The source rocks are poor source rocks, and the organic matter type is type Ⅲ, which is in the stage of over mature and angry.