对二维偏移资料进行图偏移是一种新方法。其做法是先沿二维测线进行地震偏移,再按垂直于测线的方向进行图偏移,从而得到反映地下地质体的完整的三维平面图。除了二维时间和位置校正外,这种处理方法还可以用于二维偏移资料的振幅校正,这种二维偏移资料因垂直于测线方向反射层曲率导致的聚焦、散焦而复杂化。墨西哥湾的实例说明图偏移方法如何 Image offset of two-dimensional offset data is a new method. The approach is to first carry out seismic migration along the two-dimensional survey line and then plot the diagram perpendicular to the survey line to obtain a complete three-dimensional plan reflecting the underground geological body. In addition to two-dimensional time and position correction, this processing method can also be used for the amplitude correction of two-dimensional offset data, which is complex due to the focusing, defocusing caused by the curvature of the reflecting layer perpendicular to the measuring direction The An example from the Gulf of Mexico shows how the map is offset