基于广义S变换地震高分辨率处理方法的改进及在流花11-1油田的应用
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摘要
相比较早的小波变换和傅氏变换,广义S变换具有更好的时频局部性,但也存在低频信息易损失、弱反射层易丢失等问题。对基于广义S变换的地震高分辨率处理方法进行了改进,提出了新的处理思路。这种基于广义S变换的高分辨率处理技术,在提取并补偿高频信号的同时,也对低频信号进行了有效的保持。该项技术在流花11-1油田取得了良好的应用效果。
Compared with the earlier wavelet transform and Fourier transform,generalized S transform is better in time-frequency locality,but is easier to lose low frequency information and to miss weaker reflections.Therefore,the method of sesmic high-resolution processing based on generalized S transform was improved and a new idea of processing was developed.Using this improved method based on generalized S transform,high frequency signals can be extracted and compensateed,and simultaneously low frequency signals are effectively maintained.This improved method was applied in LH11-1 oilfield,resulting in good effects.
Compared with the earlier wavelet transform and Fourier transform,generalized S transform is better in time-frequency locality,but is easier to lose low frequency information and to miss weaker reflections.Therefore,the method of sesmic high-resolution processing based on generalized S transform was improved and a new idea of processing was developed.Using this improved method based on generalized S transform,high frequency signals can be extracted and compensateed,and simultaneously low frequency signals are effectively maintained.This improved method was applied in LH11-1 oilfield,resulting in good effects.
引文
[1]陈学华,贺振华,黄德济.基于广义S变换的地震资料高效时频谱分解[J].石油地球物理勘探,2008,43(5):530-534.
[2]金国平.广义S变换在地震高分辨率处理中的应用[J].石油仪器,2009,23(3):51-53.
[3]刘继承,常正胜.基于广义S变换的地震高分辨率分析[J].自动化技术与应用,2009,28(10):56-60.
[4]刘喜武,年静波,刘洪.基于广义S变换的吸收衰减补偿方法[J].石油物探,2006,45(1):9-14.
[2]金国平.广义S变换在地震高分辨率处理中的应用[J].石油仪器,2009,23(3):51-53.
[3]刘继承,常正胜.基于广义S变换的地震高分辨率分析[J].自动化技术与应用,2009,28(10):56-60.
[4]刘喜武,年静波,刘洪.基于广义S变换的吸收衰减补偿方法[J].石油物探,2006,45(1):9-14.
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