小波变换在PS测井资料预处理中的应用分析
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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。
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.
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.
引文
[1]贺德忠.PS波现场测试的几个问题[J].工程建设与档案,2003(3):36-38.
[2]黄河华.关于剪切波测井的几点探讨[J].西部探矿工程,2004(6):97.
[3]周竹生,蒋晶晶,徐建明.PS测井在公路隧道勘察中的应用[J].工程地球物理学报,2004,5(1):395-398.
[4]熊章强,方根显.浅层地震勘探[M].北京:地质出版社,2002.
[5]张华,肖卫国,龚育龄,等.PS测井在地基勘察中的应用[J].工程勘察,2009(7):76-79.
[6]Mallat S,Hwang W L.Singularity detection and processing withwavelets[J].IEEE Transactions on Information Theory,1992,38(2):617-643.
[7]云美厚,丁伟.地震子波频率浅析[J].石油物探,2005,44(6):578-581.
[8]R.E.谢里夫,L.P.吉尔达特.勘探地震学[M].初英,译,北京:石油工业出版社,1999.
[9]黄敏,朱德兵,郭政学,等.连续小波变换在探地雷达信号分析中的应用研究[J].物探化探计算技术,2012,34(5):593-598.
[10]朱德兵,黄敏.岩基场地检层法测井孔源距选取[J].工程勘察,2010(11):80-85.
[11]唐向宏,李齐良.时频分析与小波变换[M].北京:科学出版社,2008.
[12]冉启文.小波变换与分数傅里叶变换理论及应用[M].哈尔滨:哈尔滨工业大学出版社,2001.
[2]黄河华.关于剪切波测井的几点探讨[J].西部探矿工程,2004(6):97.
[3]周竹生,蒋晶晶,徐建明.PS测井在公路隧道勘察中的应用[J].工程地球物理学报,2004,5(1):395-398.
[4]熊章强,方根显.浅层地震勘探[M].北京:地质出版社,2002.
[5]张华,肖卫国,龚育龄,等.PS测井在地基勘察中的应用[J].工程勘察,2009(7):76-79.
[6]Mallat S,Hwang W L.Singularity detection and processing withwavelets[J].IEEE Transactions on Information Theory,1992,38(2):617-643.
[7]云美厚,丁伟.地震子波频率浅析[J].石油物探,2005,44(6):578-581.
[8]R.E.谢里夫,L.P.吉尔达特.勘探地震学[M].初英,译,北京:石油工业出版社,1999.
[9]黄敏,朱德兵,郭政学,等.连续小波变换在探地雷达信号分析中的应用研究[J].物探化探计算技术,2012,34(5):593-598.
[10]朱德兵,黄敏.岩基场地检层法测井孔源距选取[J].工程勘察,2010(11):80-85.
[11]唐向宏,李齐良.时频分析与小波变换[M].北京:科学出版社,2008.
[12]冉启文.小波变换与分数傅里叶变换理论及应用[M].哈尔滨:哈尔滨工业大学出版社,2001.
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