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根据江苏和四川油区转换波勘探试验的结果,作者讨论了转换波应用中的四个问题,首先由大量的AVO曲线的分析,提出了主转换波的概念,确定了主转换波的波型;确定了接收主转换波的最佳采集范围。其次讨论了在实际地震图中如何识别转换波。然后,文中介绍了转换波共转换点(CCP)叠加的一步法[1],将反射点精确归位、非双曲线动校和CCP叠加一步完成。最后讨论了转换波剖面的地质意义。
According to the results of converted wave exploration experiments in Jiangsu and Sichuan oil regions, the author discusses four problems in the application of converted waves. Firstly, based on the analysis of a large number of AVO curves, the concept of the main converted wave is proposed and the wave form of the main converted wave is determined ; Determine the receiving the main conversion wave of the best acquisition range. Second, we discuss how to recognize the converted wave in the actual seismogram. Then, a one-step method [1] for the conversion of converted-wave co-conversion points (CCPs) is introduced in this paper. The refocusing point is accurately homed, and the non-hyperbola moving-CCP and CCP stacking are completed in one step. Finally, the geological significance of the converted wave profile is discussed.