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叠前共中心点道集资料中，包含了丰富的储层信息． Ｐ 波速度、地层泊松比、储层厚度等参数直接影响振幅随炮检距（ Ａ Ｖ Ｏ） 的变化特点，利用 Ａ Ｖ Ｏ 响应可以进行储层参数反演，但在反演之前必须通过正演模拟研究各储层参数对 Ａ Ｖ Ｏ 响应的影响． 通过制作典型的三层介质正演模型， 研究了不同地层参数组合情况下 Ａ Ｖ Ｏ 响应的变化规律， 分析了 Ａ Ｖ Ｏ 响应在不同速度异常、泊松比异常及不同薄层厚度下的变化特点及 Ａ Ｖ Ｏ 响应梯度随薄层厚度的变化规律．通过正演分析认为泊松比异常对 Ａ Ｖ Ｏ 响应的影响最大， Ａ Ｖ Ｏ 响应同时还受薄层厚度的影响， Ａ Ｖ Ｏ 异常梯度随薄层厚度的变化遵循薄层调谐原理．
Pre-stack center point gathers data, contains a wealth of reservoir information. Parameters such as P-wave velocity, Poisson’s ratio of formation and thickness of reservoir directly influence the variation of amplitude with offset (A V O), and reservoir parameters can be retrieved by A V O response. However, Forward modeling studies the effect of various reservoir parameters on A V O response. By making a typical three-layer forward model, the variation of A V O response under different formation parameters was studied, and the changes of A V O response under different velocity anomalies, Poisson’s ratio anomalies and different thin-layer thickness Characteristics and A V O response gradient with the thickness of the thin film. Through forward analysis, it is considered that the Poisson’s ratio anomaly has the greatest impact on the A V O response. The A V O response is also affected by the thickness of the thin film. The A V O anomaly gradient follows the thin-film tuning principle.