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AVO反演预处理中的检波器非径向接收能量补偿
Compensation for non-vertical received energy of geophone in preprocessing of AVO inversion
【摘要】 在地震勘探中,当炮检距非零时,检波器接收方向与反射波传播方向的夹角是非零的(即非径向接收),这一非零夹角必将产生能量损失,进而对AVO反演产生显著影响。为此本文根据Snell定律导出非径向损失补偿公式,以模型实例讨论了非径向接收对反射系数的影响,并提出了一种简单而有效的非径向能量损失补偿方法。对比用该方法做非径向损失补偿前后的AVO反演结果,其差异显著,说明本文方法能够明显改善AVO反演的质量。
【Abstract】 In seismic exploration, the angles between the geophone receiving directions and reflection propagating directions are non-zero for non-zero offsets (non-vertical receiving), which should make the energy loss and further produce significant influence on AVO inversion. For that reason, the paper induced compensation formula for non-vertical loss based on Snell’s law, discussed the influence of non-vertical receiving on reflection coefficients by the cases of model, and presented a simple and effective compensation method for non-vertical energy loss. The AVO inversions of pre- and post-compensation for non-vertical loss implemented by this method demonstrated significant difference between them,and showed the method presented in the paper can greatly improve the quality of AVO inversion.
【Key words】 seismic data processing; AVO inversion; non-vertical receiving; non-zero offset; non-vertical energy loss; energy compensation;
- 【文献出处】 石油地球物理勘探 ,Oil Geophysical Prospecting , 编辑部邮箱 ,2007年01期
- 【分类号】P631.44
- 【被引频次】2
- 【下载频次】243