P-SV转换波积分DMO方法研究及应用

Study and application of the P-SV wave integral DMO method

1. 涿州物探局研究院软件公司, 涿州 072750;2. 石油大学地科系, 北京 102200

Sun Peiyong, Software Company, Research Institute, Bureau of Oil Geophysical Prospecting, Zhuozhou 072750

本文从纵波DMO原理出发,提出一种P－SV转换波积分DMO方法。该方法依据文中导出的F－K域转换波DMO算法的积分形式进行振幅、相位校正,同常规转换波水平叠加相比能明显地改善叠加效果,更好地解决CMP道集内共转换点发散问题。理论模型和实际资料处理结果表明,该方法是一种较理想、实用的转换波DMO处理方法。

Starting from the P-wave DMO principle, we put forward a P-SV wave integral DMO method.On the basis of the integral form of the P-SV wave DMO algorithm in F-K domain derived in the paper, the amphtude and pbase corrections are made, Compared with the conventional P-SV wave horizontal stacking, the method can obviously improve the stacking result and better solve the divergence problem of common converted points in CMP gathers. Theoretical models and real data processing results show that the method is satisfactory and practical for the DMO processing of P-SV wave.