大庆油田喇嘛甸地区转换波地震资料中十字排列去噪方法研究
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摘要
如何去除面波,突出有效信号,前人已做过大量研究工作。目前工业应用的面波去噪方法主要是频率空间域的分频去噪法,但该方法在实际资料处理中较难取得理想的效果。针对此问题,对喇嘛甸油田3D3C地震资料,变换数据的观测系统,按炮线、检波线方向抽取十字排列的三维地震数据,在三维频率波数域内进行面波去除研究应用。结果表明:该去噪技术能够在不损害有效信号的前提下较好地去除面波,使资料信噪比有较大提高,从而在整体上大大地提高了地震资料处理的精度。
A great deal of previous work have been done about how to remove the surface wave and hig0hlight the effective signal,separate frequency denoising of frequency-space domain is the primary method to get rid of noise of surface wave,which is applied by industry at the moment,but it is difficult to obtain the desired results in the actual data processing.To resolve this problem,in view of the multiple type and strong energy features of 3D3C data of Lamadian oil field,in order to as much as possible eliminate the noise clearly and as little as possible to reduce the loss of effective signal,transform the data observation systems,collect three-dimensional seismic data in the direction of gun line and seisline which are cross spread,and get rid of surface wave of 3D frequency-wavenumber domain.The results show that the noise suppression technique is effective to remove surface wave noise in the premise of the effective signal is not damaged,which improves signal to noise ratio greatly,thereby the accuracy of seismic data processing is improved greatly.
A great deal of previous work have been done about how to remove the surface wave and hig0hlight the effective signal,separate frequency denoising of frequency-space domain is the primary method to get rid of noise of surface wave,which is applied by industry at the moment,but it is difficult to obtain the desired results in the actual data processing.To resolve this problem,in view of the multiple type and strong energy features of 3D3C data of Lamadian oil field,in order to as much as possible eliminate the noise clearly and as little as possible to reduce the loss of effective signal,transform the data observation systems,collect three-dimensional seismic data in the direction of gun line and seisline which are cross spread,and get rid of surface wave of 3D frequency-wavenumber domain.The results show that the noise suppression technique is effective to remove surface wave noise in the premise of the effective signal is not damaged,which improves signal to noise ratio greatly,thereby the accuracy of seismic data processing is improved greatly.
引文
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10李国发,彭苏萍,何兵寿.转换波地震资料处理的关键问题与解决方法.中国矿业大学学报,2005;34(1):41—45
2 Li Xiangyang,Yuan Jianxin.Converted-wave seisimology in anisotrop-ic media revisited,part1:basic theory.Applied Geophysics,2005;2(1):26—42
3 Shi Jianxin.Four-parameter velocity analysis and its application to theKen-71 area converted-wave data.Applied Geophysics,2008,5(1):50—56
4王赟,膝殿波,邢春颖.多分量地震技术实用化的一些关键问题.勘探地球物理进展,2005;28(3):174—178
5王建民,付雷,张向君,等.多分量地震勘探技术在大庆探区的应用.石油地球物理勘探,2006;41(4):426—443
6洪余刚,李亚林,李忠,等.多分量地震资料层位对比.天然气工业,2008,28(9):41—43
7石建新,王延光,毕丽飞,等.多分量地震资料处理解释技术研究.地球物理学进展,2006;21(2):505—511
8魏建新,狄帮让.多波多分量波场的地震物理模型观测.石油物探,2005;44(6):539—545
9毕丽华,王延光,王慧,等.三维转换波资料处理方法研究及其应用.油气地球物理,2007;5(2):28—32
10李国发,彭苏萍,何兵寿.转换波地震资料处理的关键问题与解决方法.中国矿业大学学报,2005;34(1):41—45
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