以石油地质学、油气地球化学等理论为依据，对四川盆地下古生界下寒武统筇竹寺组和下志留统龙 马溪组富含有机质的暗色泥页岩的发育及分布作了分析。利用暗色泥页岩沉积厚度、总有机碳含量、有机 质类型以及有机质成熟度4 个指标对页岩气资源进行了初步评价，发现筇竹寺组和龙马溪组拥有巨厚的 泥页岩沉积、较高的有机碳含量、良好的有机质类型以及十分重要的过成熟条件，从而推断出研究区具有 丰富的页岩气资源，并进一步划分出研究区页岩气聚集的有利勘探区带。

Based on the theory of petroleumgeology and geochemistry, this paper analyzed the development and distribution of the black clay shale in organic matter in the Lower Cambrian Qiongzhusi Formation and the Lower Silurian Longmaxi Formation in the Lower Paleozoic in Sichuan Basin. Four indicators including shale thickness, total organic carbon, organic matter types and maturity were applied to evaluate the shale gas resources in Sichuan Basin. The result shows that Qiongzhusi Formation and Longmaxi Formation have thick mud shale depositions, high organic carbon content, favorable organic matter types and very important post mature condition. So, it is concluded that this area has abundant shale gas resources. It is also pointed out the favorable exploration zones in the study area.