应用反褶积技术压制多次波的实例分析
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摘要
多次波是地震资料处理中常见的一种干扰波。本文通过对利用预测反褶积原理去除剩余多次波的应用历史回顾及实际地震资料的试验分析,针对国外A区块陆地地震资料接收排列短、信噪比低且存在较强的长周期多次波,以及P区块浅海地震资料的浅层切除区内存在的短周期多次波的实际情况,采用不同预测步长的反褶积技术,对动校正后的共中心点CMP道集和叠加后的地震数据进行反褶积处理,很好地压制了多次波,这对于如何运用好现有的常规处理技术解决一些技术难题具有一定的借鉴意义。
The multiple is a common noise wave in marine or land seismic data processing. In this paper the authors reviewed the history in application of the predictive deconvlution to remove multiples and test analysis for field seismic data processing. Regarding the short spread, low signal-noise-ratio and strong long-period multiple for land seismic data in A block in Iran and short-period multiple existing in shallow muting zone for shallow offshore seismic data in P block in Persian Gulf, different predictive steps were applied in deconvolution processing for normal moveout corrected CMP (Common Mid-Point) gathers and stacked seismic data, as a result the multiples can be successfully suppressed and the case studies shows that routine seismic data processing technique can still solve some difficult problems in seismic data processing and the case is just a successful example.
The multiple is a common noise wave in marine or land seismic data processing. In this paper the authors reviewed the history in application of the predictive deconvlution to remove multiples and test analysis for field seismic data processing. Regarding the short spread, low signal-noise-ratio and strong long-period multiple for land seismic data in A block in Iran and short-period multiple existing in shallow muting zone for shallow offshore seismic data in P block in Persian Gulf, different predictive steps were applied in deconvolution processing for normal moveout corrected CMP (Common Mid-Point) gathers and stacked seismic data, as a result the multiples can be successfully suppressed and the case studies shows that routine seismic data processing technique can still solve some difficult problems in seismic data processing and the case is just a successful example.
引文
[1]牟永光.地震勘探资料数字处理方法.北京:石油工业出版社,1981
[2]Yil maz.Seismic Data Analysis:Processing,Inver-sion and Interpretation of Seismic Data,2006
[3]曾灏等.“二维滤波—叠加”法压制多次波.石油地球物理勘探,1984,19(2):156~162
[2]Yil maz.Seismic Data Analysis:Processing,Inver-sion and Interpretation of Seismic Data,2006
[3]曾灏等.“二维滤波—叠加”法压制多次波.石油地球物理勘探,1984,19(2):156~162
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