摘要
给出了几种用于初至拾取的地震时窗属性特征的算法。经过试算、比较和分析， 指出地震分形特征初至拾取的不足； 提出地震道时窗内能量比属性特征检测地震初至时间的新方法。该方法能快速和准确拾取初至的起跳时间， 抗噪声能力强。合成地震记录试验表明， 当随机噪声达７５％ 时， 仍能准确拾取初至时间。实际地震资料试算显示， 其正确率达９０％ 左右。
Several algorithms for picking up arrival over seismic time windows are discussed By trying out, comparing and analyzing these algorithms,the backward of picking up arrival detected by seismic fractal characters is pointed out and a new method based on the rate of energy within seismic time windows to detect arrival is presented With this method,the first break time can be picked up rapidly and accurately and the capability of resisting noise is enhanced The result of processing synthetic seismic data shows that arrival time is picked up accurately when random noise is 75% The trial calculation of seismic data demonstrates that the success rate from this method is up to 90%
出处
《江汉石油学院学报》
CSCD
北大核心
1999年第4期45-48, ,共4页
Journal of Jianghan Petroleum Institute
基金
中国石油天然气集团公司 "九五"滚动开发勘探项目
