This paper has made some searching in Complex structure fine pre-stack processing and pre-stack migration imaging, and has achieved some results.

本文就这两个问题，在复杂构造叠前精细处理、复杂构造叠前偏移成像等方面开展了一些探索，取得了一定的效果。

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For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used.

采用DMO、偏移速度场平滑、叠前深度偏移等技术提高偏移成像精度。

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The technique of seismic pre-stack depth migration is used to correctly implement the complex structural imaging.

采用地震造前深度偏移技术，使复杂构造正确成像。

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