论文部分内容阅读
针对残余多次波的识别与压制问题,提出了1种应用于成像道集域的变周期预测反褶积方法。与传统的预测反褶积方法不同,该方法首先根据所建立的强波阻抗界面的深度-速度模型,在地震偏移剖面上追踪识别出残余多次波,并根据其传播时间确定出相应变化的多次波周期或预测步长,然后在成像道集上对含有残余多次波的成像道进行变周期预测反褶积压制处理,最后再将剔除残余多次波后的成像道集合成为新的地震偏移剖面。实验处理的结果表明:该方法不仅对微屈多次波有效,而且对残余的长周期鸣震多次波也可达到令人满意的压制效果。
Aiming at the problem of recognition and suppression of residual multiples, a new method of variable period prediction deconvolution is proposed. Different from the traditional method of predicting deconvolution, this method first traces and identifies the residual multiple waves on the seismic migration profile according to the established depth-velocity model of the strong impedance interface and determines the corresponding changes according to the propagation time And then predicts the deconvolution of the imaging tract with residual multiple waves on the imaging gathers and then sets the imaging gathers after removing the residual multiples to new ones Seismic migration profile. Experimental results show that this method is not only effective for micro-bend multiple waves, but also satisfactory for suppressing the residual long-period ringing multiple waves.