摘要
广义线性反演是波阻抗反演中常用的一种方法,该方法反演精度高,但对噪声非常敏感,严重时可使反演出的波阻抗值完全失真。小波变换的方法具有十分明显的分频特性和去噪功能。本文采纳了广义线性反演和小波变换方法的优点,提出了小波域的波阻抗反演方法。通过理论模型试算和实际资料处理,结果表明,该方法在理论上是正确的。
Generalized linear inversion is a common method in wave impedance inversion. The method brings high inversion accuracy; but it is very sensitive to noise, so that it will make wave impedance values distorted fully in severe case. Wavelet transform method has obvious frequency division property and noise elimination function. A new method for wave impedance inversion in wavelet domain is thus developed, which has joint advantages of the above two methods. The results of modeling computation and real data processing show that the new method has right theory basis and brings good application effect.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2000年第1期89-96,共8页
Oil Geophysical Prospecting
关键词
小波变换
波阻抗
反演方法
地震数据
地震勘探
wavelet transform, wave impedance, generalized linear inversion, frequency division processing, noise elimination
