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前言 2-D地震作业中积累的经验表明,构造成像可被用作为复杂地区层速度分析的有效工具。本文想把类似的方法应用于3-D作业中。这里提出的方法旨在解决时间域处理未成功的复杂的3-D资料。该方法是在进一步简化速度分析之后,而且成像方法已无能为力的情况下才应用的。该方法主要应用于那些由于要求特殊资料而不适合应用某些偏移算法的3-D陆地勘探区。当构造复杂时,叠前成像速度分析变成迭代过程。本文所用的成像算法在速度和灵活性上
Preface The accumulated experience in 2-D seismic operations shows that tectonic imaging can be used as an effective tool for velocity analysis of complex zones. This article wants to apply a similar approach to 3-D jobs. The approach proposed here is to address the complex time-domain handling of complex 3-D data. This method is applied after the speed analysis is further simplified and the imaging method is powerless. This method is mainly applied to 3-D terrestrial exploration areas that are not suitable for applying some migration algorithms because special information is required. When the structure is complex, prestack imaging velocity analysis becomes an iterative process. The imaging algorithms used in this paper are fast and flexible