【摘要】 实际生产应用中,PS波速测井易受到环境干扰致使原始数据信噪比低,初至拾取前需进行必要的降噪处理。广泛应用于地震测井资料处理中的带通滤波具有一定的局限性,而具有时域和频域双重局部特性的小波变换在地震资料降噪处理中有着独特的优势。结合PS测井实例,对比了频率域带通滤波和小波滤波的效果,验证了小波变换在数据预处理中的优越性。更多还原

【Abstract】 In the application of PS-well logging method,the collecting data are often susceptible to be interferred by environments which results low SNR.So necessary noise reduction should be added to data processing before picking up preliminary wave.Band-pass filtering which is widely used in the processing of seismic logging data has its limitation.Possessing the expression ability of part signal characteristic in time domain and frequency domain,there is extraordinary superiority for wavelet transform in noise reduction of seismic logging data.Combined with an example of PS-well logging,the results of frequency domain band-pass filtering and wavelet filtering were compared,the advantages of wavelet transform in data preprocessing were also proved.更多还原