本文应用斑块饱和岩石物理模型从理论上分析了不同固结程度岩石中含气饱和度对衰减介质垂直入射反射系数、速度和衰减的影响,结果表明局部含气储层在地震频带内会发生频散和振幅频变效应,地震反射系数频率梯度与频散具有一致性,两者均是对含气饱和度的敏感属性。通过含气饱和度—反射系数频率梯度—反射系数交会图,建立岩石物理量板,用于估计储层的含气饱和度。 In this paper, the effect of gas saturation in rock with different consolidation degree on vertical incident reflection coefficient, velocity and attenuation of attenuating medium is theoretically analyzed by using patch saturated rock physics model. The results show that local gas reservoirs occur within the seismic frequency band Frequency dispersion and amplitude frequency change effect, seismic reflection coefficient frequency gradient and dispersion are consistent, both of which are sensitive properties of gas saturation. By gas-saturation-reflectance frequency gradient-reflectance cross-plot, a petrophysical gauge plate is established for estimating gas saturation in a reservoir.