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应用不同的偏移方法对Marmousi速度模型进行了偏移实验,实验结果表明,叠后逆时深度偏移成像清晰,对于复杂构造.尤其是丘体内部构造刻画准确,成像效果优于所比较的其他方法.与传统的偏移方法相比,叠后逆时偏移精度相对较高、无倾角限制,能很好地适应强横向速度变化.对南海神狐海域天然气水合物调查的一条二维测线应用了叠后逆时偏移,偏移效果甚至优于单程波波动方程的叠前深度偏移.因此,天然气水合物地震资料处理中,叠后逆时偏移应是一种值得重视的偏移方法.
The migration experiment of Marmousi velocity model is carried out by using different migration methods. The experimental results show that the post-stack reverse-time depth migration imaging is clear, and the imaging structure is better than that of the complex structure, especially the internal structure of the mound. Other methods.Compared with the traditional migration methods, the post-stack reverse-time migration accuracy is relatively high, without inclination restrictions, and can well adapt to the strong lateral velocity changes.Analysed a two-dimensional The post-stack reverse-time migration is applied to the survey line, and the migration effect is even better than the prestack depth migration of the one-way wave equation.Therefore, the post-stack reverse-time migration should be emphasized in the gas hydrate seismic data processing Offset method.