无射线追踪层析静校正技术及其应用研究

The research of tomographic static correction without ray tracing and its application

静校正技术在近地表条件复杂地区的地震资料处理中具有重要意义,其校正的准确性直接影响后续的处理和解释工作。在众多静校正方法中,无射线追踪层析静校正法兼具稳定性和灵活性的优点。这里对无射线追踪层析静校正的原理和主要参数进行了分析;而后将其应用于鄂尔多斯盆地某工区黄土塬地区地震资料的处理,把处理效果与其他几种不同静校正方法进行了对比。结果表明,该方法可使单炮记录和叠加剖面的质量得到较大改善,地震记录同相轴的连续性得到增强。

Static correction technique is important for processing seismic data of regions with complicated near-surface condi-tions,its accuracy will affect the following processing and interpretation.In various methods of static correction,tomographic static correction without ray tracing combines stability and flexibility.This paper analyzed the fundamental principle of tomo-graphic static correction without ray tracing and its main parameters.Then it was applied to seismic data of loess region in Or-dos Basin,the comparison between its result and that of other static correction methods shows that applying tomographic static correction without ray tracing can improve the quality of single shot record and stacking section,continuity of seismic events in the record was enhanced.