镜质组反射率是评价有机质成熟度的重要指标 ,然而由于地质因素和测试技术的原因 ,镜质组反射率测量值常与预计值有一定的偏差。在三塘湖盆地上古生界烃源岩中 ,可以观察到镜质组反射率的局部增强和镜质组反射率的抑制。局部增强多分布在上二叠统的烃源岩中 ,主要与火山活动有关。这种反射率的增强在平面上分布广泛 ,但纵向上影响范围较小。反射率的抑制是在上古生界烃源岩含有较高含量的腐泥组分背景下产生的。用氢指数模板方法对抑制进行了校正 ,抑制的幅度最大可达 0 .3% Vitrinite reflectance is an important index to evaluate the maturity of organic matter. However, due to the geological factors and testing techniques, the vitrinite reflectance usually has a certain deviation from the expected value. In the Upper Paleozoic source rocks in the Santanghu Basin, local reflections of the vitrinite and inhibition of vitrinite reflectance can be observed. Local enhanced distribution in the Upper Permian source rocks, mainly related to volcanic activity. This increase in reflectivity is widespread in the plane but less in the longitudinal direction. Reflectance inhibition is produced in the context of the higher Paleozoic sapropel component in the Upper Paleozoic source rocks. The hydrogen index template method to suppress the correction, the maximum inhibition rate of up to 0.3%