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中文摘要：
基于Chapman岩石物理模型，对第三类AVO类型进行频率依赖性分析。并将频谱分解技术与AVO技术结合起来，将反射系数替代为不同频率的振幅谱，将振幅谱视为频率的函数，对Smith ＆ Gidlow近似式进行扩展，给出一种新的描述地震波频散程度的属性的计算公式与方法。并用模型和实际地震资料频散属性的计算。研究结果表明：频散模型和弹性模型的频散属性有明显差异，频散属性可以作为一种含气储层的指示剂。
英文摘要：
Frequency-dependent characteristics of a class 3 AVO model were performed using Chapman rock physical model. Treating the spectral amplitude as reflective coefficients, a new seismic attribute for the description of seismic dispersion was presented by extending Smith ＆ Gidlow’s formula in frequency domain. Then the method was used for synthetic model and real seismic data processing. The results show that dispersion properties obtained by frequency-dependent inversion can be used as the indicator for hydrocarbon detection, because it is very different in elasticity situation and dispersion situation.
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