井约束下的小波变换提高地震资料分辨率

小波变换同时有在时间域和频率域对信号进行局部化的特点，使其在地震资料处理中越来越发挥较大的作用。小波变换增频的幅度与地震资料有效频带的宽度有直接联系，即地震资料的有效频带越宽，剖面主频增加的幅度也就越大。通过理论和实际资料的应用表明，在井声波曲线的约束下，利用小波变换提高地震资料分辨率的幅度可以得到合理控制，大大增加了资料的可信度。

Seismic Resolution Improvement Using Wavelet Transform in Borehole Restraint

The wavelet transform is of good localization property in time and frequency domain, and it has good prospects in seismic processing. The frequency-increased range of wavelet transform keeps in direct contact with the width of beneficial frequency band of seismic data. In other words, the seismic data contains more high-frequency components, and more frequency-increased range is obtained using the wavelet transform. The theoretical and actual applications show that the range using wavelet transform to increase frequency can be controlled reasonably in borehole restraint, and strengthen the reliability of transformed data greatly.