浅层地震勘探多道反射时深转换方法

Time-to-depth conversion method for multi-channel reflection in shallow seismic exploration

时深转换是浅层地震勘探多道反射法进行定量解释的关键一步,其转换结果直接影响各有效反射物性界面埋深解释误差的大小。为尽可能减小此类误差,提高各有效反射物性界面埋深解释的可靠性,根据多年浅层地震勘探数据处理经验,结合地质解释工作,从速度参数的提取、时深剖面的转换到地质解释剖面图编制3个方面阐述了浅层地震勘探多道反射时深转换方法,并结合实例进一步分析,为浅层地震勘探工作提供借鉴。

Time-to-depth conversion is a key step in the quantitative interpretation of multi-channel reflection method in shallow seismic exploration,and its conversion result directly affects the burial depth interpretation error of each effective reflective physical property interface.To minimize such error,and to improve burial depth interpretation reliability of each effective reflective physical property interface,this paper,based on years of experience in shallow seismic exploration data processing and geological interpretation,expounds the multi-channel reflection time-to-depth conversion method of shallow seismic exploration from 3 aspects of velocity parameter extraction,time-to-depth profile conversion and geological interpretation profile drawing,and makes further analysis with examples.The analysis can be used as reference for shallow seismic exploration.