塔里木盆地发育多套海相页岩,具有较大的页岩气资源潜力。在大量实测数据的基础上,使用测井方法拟合计算海相泥页岩TOC,结合野外露头取样分析测试,筛选富有机质泥页岩有利层段。研究认为,经典的ΔLogR法不适用于高—过成熟泥页岩TOC值的计算,而利用U曲线法计算TOC值具有很好的应用效果。结果表明,塔里木盆地富有机质泥页岩层段主要分布于满加尔凹陷东部中下奥陶统黑土凹组、下寒武统西大山组—西山布拉克组和柯坪—阿瓦提凹陷中上奥陶统萨尔干组;塔东地区的黑土凹组页岩是目前页岩气勘探的有利层位,但分布范围及页岩厚度均较小,页岩气勘探开发潜力较小。 The Tarim Basin has developed several sets of marine shales, which have great potential for shale gas resources. On the basis of a large number of measured data, the TOC of marine shale was calculated by using well logging method. Combined with the field outcrop sampling and analysis, the favorable intervals of organic-rich shale were screened out. The study shows that the classical ΔLogR method is not suitable for the calculation of TOC of high-over-mature shale, but the U-curve method has a good application effect. The results show that the organic-rich shale formations in the Tarim Basin are mainly distributed in the Middle-Lower Ordovician Blackock Formation, the Lower Cambrian Xishan Formation-Xishanbulak Formation and the Keping-Awati Depression Upper Ordovician And the Sallygan Formation. The black earth-shale shale in Tarong area is a favorable layer for shale gas exploration at present, but its distribution range and shale thickness are small with little potential for exploration and development of shale gas.