转换波处理一些问题及对策

由于转换波本身的特殊性，在处理过程中需要采用不同于纵波的处理方法。分析了转换波处理过程中的一些问题，即面波衰减、静校正、各向异性动校正，以及方位各向异性校正，提出相应的解决方法。采用极化滤波方法，实现了转换波上的面波衰减。采用综合静校正技术，切实解决转换波静校正问题。各向异性速度分析及动校正方法，用于拉平转换波资料的近、中和远偏移距同相轴。通过横波分裂分析及分量校正补偿，提高了转换波径向剖面质量。根据实际资料处理效果，说明了这些方法的有效性。

Some problems and strategies in converted-wave processing

Because of converted-wave itself particularity, it is required that the processing methods is different from P-wave. In this paper, some problems are analyzed in processing converted-wave data, such as surface wave attenuation, static correction, anisotropic NMO, azimuth anisotropic correction, etc. Some methods are applied to resolve these problems. Polarization filter method is used to attenuate surface wave in converted-wave shots. Integrated static correction techniques are applied to resolve converted-wave static correction problem. The method of anisotropic velocity analysis and NMO are used to flatten the far, medium and small offset events. The radial section quality is greatly improved by S wave splitting analysis and compensation. Actual processing results show the effectiveness of these methods.