College of Geo- exploration Science and Technology��Jilin University��Changchun 130026��China

The influence of kerogen content to the elastic anisotropy of shale rocks has been studied through the simulation and analysis of physical model of anisotropic shale rocks�� The results offer the reference for quantita- tive interpretation of shale reservoir thickness and kerogen content by using AVO method�� The rock physics model predicts the change law of shale velocity and anisotropic parameters with kerogen content�� Then�� using the propaga- tion matrix method to calculate the AVO response of thin shale rocks��the authors get the reflection coefficient that is a function of the shale layer thickness��the frequency of incident wave��the kerogen content and the incident an- gle�� Numerical simulation results show that the reflection coefficient in the kerogen content remains constant and in the same incident angle is periodic changes in the frequency domain��and the period is inversely proportional to the thin bed thickness�� For the same frequency and the same incident wave angle of incidence�� the reflection coefficient amplitude increased with the kerogen content increased��