由于转换横波的传播速度比纵波低,且其传播不受孔隙流体的影响,故其在近地表的结构和纵波亦不同,因此在转换波地震资料处理过程中,转换横波的静校正问题比纵波更为突出。利用纵波初至和转换横波初至联合来建立近地表模型、最终求取转换横波的静校正量的方法,并在SLG气区实际应用,取得了良好的效果,认为可在生产实际中推广。

Due to converted shear wave have lower velocity than P wave and the fluid in the  medium have no action to converted shear wave. The near surface model for conve rted shear wave is different from that for P wave. The static of converted shear  wave become more important and serious than P wave in converted shear wave seis mic data processing. In this article，first，use firstbreak time of P wave to ob tain the near surface model；second，pick the firstbreak time difference between  P wave and converted shear wave by cross correlation；then，calculate the stati c of converted shear wave．We use the real 3D converted wave seismic data in the  SLG area． As it shows in this paper, the problem of converted shear wave stati c is solved perfectly．We suggest that this method may be widely used in convert ed shear wave seismic data processing．