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由于转换波具有低速、低信噪比的特点,以及初至拾取和共转换点分选的困难,一些相对成熟的纵波资料静校正方法不能很好地解决转换波静校正问题,转换波静校正问题成为转换波处理取得突破主要技术障碍。为了改进转换波静校正的应用效果,首先利用共检波点叠加静校正方法,通过改善共检波点叠加剖面的质量对检波点进行初始静校正,然后利用叠加能量最大静校正方法,通过改善共转换点剖面的质量对检波点进行更精细的静校正,最后对共转换点道集进行非地表一致性剩余时差校正,增强不同深度反射信号的叠加质量。通过三种静校正方法的联合应用,较好地解决了转换波地震资料的静校正问题。
Due to the low speed and low signal-to-noise ratio of the converted wave and the difficulties in the first-arrival pick-up and the conversion of the co-conversion point, some relatively mature static correction methods for compressional data do not solve the problem of static correction of the converted wave. The problem has become a major technical obstacle to breakthroughs in the conversion wave processing. In order to improve the application effects of the static correction of the converted wave, firstly, the co-detection point superposition static correction method is adopted to improve the initial static correction point of the detection point by improving the quality of the superposed cross-section of the common detection point. Then by using the superposition static energy maximum correction method, The quality of the point profile performs finer static correction on the detection points. Finally, the non-surface consistency residual time difference correction is performed on the common conversion point gathers to enhance the superposition quality of the reflection signals at different depths. Through the combined application of three static correction methods, the static correction of converted-wave seismic data is well solved.