关键词: 近地表结构, 低降速带, 曲面拟合, 相似系数, 边界延拓, 模型反演, 静校正

Abstract: With the progress of lithology and accurate seismic exploration, the analysis of near surface structure becomes more important. The static correction technology has kept on progressing with more and more new methods in recent years, but they are relatively isolated. Because it is a complicated project involving many factors, especially considering multi-survey processing or previous static correction parameters, the corresponding computation and technology platform are needed to analyze many types of near surface information of different stages and build near surface structural model. The near surface structure interpretation system is a professional platform integrated with near surface structure analysis and static correction modeling. This system provides a technological platform for the analysis of velocity and thickness distribution of near surface research points and the study of static correction methods, and improves the management of seismic assistant information of oil field and the static correction technology.

Key words: near surface structure, low velocity zone, curve surface fitting, scaling coefficient, boundary continuation, model inversion, static correction