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非目标因素对AVO属性叠加的影响
INFLUENCE OF AIMLESS FACTORS ON AVO ATTRIBUTION SU-PERIMPOSITION
【摘要】 除了泊松比外,有不少非目标因素会引起振幅随炮检距变化,在AVO属性叠加图上能直观看到它们的影响。AVO的抗干扰性能远低于水平叠加,那些振幅或时差随炮检距单调变化的因素会引起严重的假AVO异常,因此利用AVO方法时,需要作特别精细的叠前处理。
【Abstract】 Besides Poisson’s ratio there are quite a few aimless factors which can cause AVO. One can see their effect directly from diagraphs of AVO attribution superimposition. Anti-inter- rupted ability of AVO is far smaller than horizontal stack. Factors which are of monotonous variation of amplitude and time shift with off-set can form serious spurious anomalies. It is even bigger than those caused dy poisson’s ratio so AVO needs peculiar meticulous processing before stack.
【关键词】 地震数据处理;
AVO属性叠加;
非目标因素;
随机噪声;
剩余时差;
【Key words】 Seismic data processing; AVO attribution superimposition; Aimless factors; Random noise; Residual time difference;
【Key words】 Seismic data processing; AVO attribution superimposition; Aimless factors; Random noise; Residual time difference;
- 【文献出处】 西南石油学院学报 ,Journal of Southwest Petroleum Institute , 编辑部邮箱 ,1993年02期
- 【分类号】P631.4
- 【下载频次】34