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保山盆地是云南第三系沉积盆地的典型代表，面积２４５ｋｍ２。烃源岩的发育与成熟度是这类盆地油气远景的重要控制因素。保山盆地母岩含有一定的有机质，泥岩有机碳含量在１０％～２０％之间，以上第三系上新统羊邑组二段有机碳含量最高，有机质丰度与岩性关系密切，不同的有机质丰度指标对烃源岩级别的反映有差异；岩石热解结果、干酪根的性质、生物标志化合物组成分布特征等反映出的有机质类型是以腐泥腐殖型和腐殖型为主，处于未成熟和低成熟阶段；保山盆地半深湖—深湖相主要发育于盆地中部坳陷带，这是该盆地主力烃源岩的分布范围；现今处于１４００ｍ之下的半深湖—深湖相的范围是保山盆地成熟烃源岩的范围；保山盆地天然气以生物气为主，具有产生生物气（细菌气）的优越条件。在保山盆地也可能找到生物—热催化过渡带气。
The Baoshan basin is a typical representative of the Tertiary sedimentary basin in Yunnan Province, covering an area of 245km2. The development and maturity of source rocks are important controlling factors for the hydrocarbon prospects in these basins. The parent rock of Baoshan Basin contains some organic matter with organic carbon content of 10% -20%. The upper member of the second member of the Upper Pleistocene in the Yanyn Formation has the highest organic carbon content, organic matter abundance and lithology There are some differences between the abundance indices of source rocks and the abundance of organic matter. The pyrolysis results of rocks, the nature of kerogen and the compositional distribution of biomarker compounds reflect the organic matter types in terms of sapropel humus and humus Type, mainly in the immature and low maturity stage; semi-deep lacustrine-deep lacustrine phase in the Baoshan basin is mainly developed in the central depression zone of the basin, which is the distribution range of the main source rocks in this basin; the semi-deep The range of lacustrine-lacustrine facies is the source of mature source rocks in Baoshan Basin. The natural gas in Baoshan basin is dominated by biogas and has the favorable conditions for producing biogas (bacterial gas). Bio-thermocatalytic transitional gas may also be found in the Baoshan basin.