对于复杂地质构造成像来说,地震数据的深度偏移正成为更加常规的方法。然而,在某些情况下,产生的深度剖面的质量比期望的要低。一种典型的情况是盐体的成像。陡倾盐翼的图像经常变坏、模糊不清而难以解释。本文的研究说明出现这种成像问题的一个原因并提出了一个我们称之为“控制叠加”的解决方法。解决方法的核心是在抽道集和叠加之前正确地切除由叠前深度偏移产生的部分图像,以便获得最终深度剖面。 For complex geotectonic imaging, depth migration of seismic data is becoming more conventional. However, in some cases, the resulting depth profile is of lower quality than expected. A typical case is salt imaging. The image of the steep-dip salty wing often deteriorates, is ambiguous and difficult to interpret. This article’s study illustrates one reason for this imaging problem and proposes a solution we call “control overlay”. The heart of the solution is to properly cut off part of the image resulting from the pre-stack depth offset prior to decimation and overlay in order to obtain the final depth profile.