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额济纳旗及其邻区石炭-二叠系阿木山组烃源岩分布广、厚度大.通过对露头剖面观察采样,结合钻井样品进行分析测试,从有机质丰度、类型、成熟度和烃源岩分布特征等方面开展研究,对阿木山组烃源岩进行综合评价.结果表明:区内阿木山组烃源岩有机质丰度总体为“中等-好”级别,有机质类型以Ⅱ1-Ⅱ2型为主;有机质成熟度以成熟-高成熟阶段为主,且区内存在一定差异.总体看来,该组烃源岩生烃潜力较大,研究区具有良好的油气勘探前景.
The Ejinaqi and its adjacent Permian-Permian Amunshan Formation have a wide distribution of source rocks with large thickness.Based on the observation and sampling of outcrop sections and the analysis of drilling samples, from the aspects of organic matter abundance, type, maturity and source rocks Distribution characteristics and so on, the comprehensive evaluation of source rocks in Amunshan Formation shows that the organic matter abundance of the source rocks in Amunshan Formation is generally “moderate-good” in the area, and that of the type II1-Ⅱ2 , While the maturity of organic matter is mainly in the mature-high maturity stage, and there are some differences in the area.Overall, the hydrocarbon generation potentials of the source rocks of this group are large, and the study area has good prospects for oil and gas exploration.