Abstract：Physical properties of thin reservoirs have important influence on seismic wave propagation and reservoir thickness quantitative prediction. In this paper, we describe thin layers based on a periodic layered model with patchy saturation, and derive in detail seismic wave propagation laws in porous thin-layered media, and put forward a quantitative relation expression between amplitude and phase of thin-layer reflection. Then we analyze amplitude and phase spectrum characteristics under different physical conditions of the rock. It is found that the peak frequency is related to permeability, porosity and saturation. Therefore we should consider physical property parameters of thin-reservoir when predicting the thickness of thin layer. The limitations of homogeneous isotropic elastic thin layers can be overcome using the periodic layered model with patchy saturation. Numerical analysis results provide theoretical foundation for thin-reservoir seismic interpretation.
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