小波变换地震反演方法

Wavelet Transform Seismic inversion Method

提出了一种利用小波变换方法提高地震剖面的分辨率，进而更有效地进行波阻抗反演的新思路。根据小波变换的特点，对测井资料进行小波分解，对分解结果的各个频段进行组合，寻找与井旁道接近的组合方案，从而得到大地滤波因子，将此滤波因子作用于其他各道，得到对应于该道的反射系数，进而求得波阻抗的值。

A new method of using wavelet transform to improve resolution of seismic data ispresented, and thus the seismic inversion is performed more effectively. According to the usefulcharacteristics of wavelet transform, the log data is first decomposed, then every spectrum of theresult of decomposion is reconstructed and one group that is most similar to the seismic tracecorresponding to the log is looked for. After that this group of spectrum is used to reconstructreflection coefficients combine with seismic data and compute impedence finally.