论文部分内容阅读
黏弹性介质中多波AVO反演之前,必须作一系列的振幅补偿处理,其中波前扩散和介质吸收是振幅补偿的两个主要因素。为此,本文利用黏弹性层状介质中的多波波前扩散及介质吸收校正公式,确定出频率域一个黏弹性介质的半反射界面上的多波映射矩阵,进而定量地分析了映射矩阵特征值问题的敏感性。研究结果表明,在振幅补偿情形下,利用AVO反演可以确定两个最佳线性组合,并且多波AVO中包含了衰减参数的信息,但多波AVO反演对衰减参数的敏感性较小。
Before multi-wave AVO inversion in viscoelastic media, a series of amplitude compensation must be done. Wavefront diffusion and dielectric absorption are the two main factors of amplitude compensation. Therefore, by using the multi-wave front diffusion and the medium absorption correction formula in viscoelastic layered media, the multi-wave mapping matrix of the semi-reflective interface of a viscoelastic medium in the frequency domain is determined, and then the characteristics of the mapping matrix are quantitatively analyzed Sensitivity to value problems. The results show that in the case of amplitude compensation, the two optimal linear combinations can be determined by AVO inversion, and the information of the attenuation parameters is contained in the multi-wave AVO. However, the multi-wave AVO inversion is less sensitive to the attenuation parameters.