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偏移概念的范畴已从最初作为构造成像工具演化为速度估算和地震属性分析的工具。本文阐述了偏移的基本概念、原理、实现方法并对其进行了分类和对比,分析了各种偏移方法各自的优势和不足,总结了地震偏移成像方法研究的现状和波动方程偏移成像最新进展。认为今后偏移的方向是发展和完善高分辨率和高保真度的偏移成像方法、高精度的速度估计、速度模型建立和可视化方法研究,矢量地震偏移成像方法、快速的偏移算法仍是研究的重点。
The scope of the concept of migration has evolved from the initial construction of imaging tools to tools for velocity estimation and seismic attribute analysis. This paper describes the basic concepts, principles and implementation methods of offset, classifies and compares them, analyzes the advantages and disadvantages of various offset methods, and summarizes the research status and wave equation migration Recent advances in imaging. The direction of future migration is to develop and improve high-resolution and high-fidelity migration imaging methods, high-precision velocity estimation, velocity modeling and visualization methods, vector seismic migration imaging methods, and fast migration algorithms Is the focus of research.