方向性边界保持断层增强技术
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摘要
地震数据在采集处理过程中不可避免地会受到各种因素的影响,从而导致地震资料的信噪比低,造成断层信息模糊,断层增强的目的是进一步清晰地刻画断层,同时提高地震资料的信噪比.本文提出了方向性边界保持断层增强技术,首先通过方向滤波技术估计地震同相轴的方向信息,然后结合边界保持滤波技术进行断层图像的增强,将该技术用于地震资料,可以得到断层图像更加清晰、分辨率更高的三维地震相干体,以利于进一步的构造解释以及油气输导体系的定量评价,具有重要的理论与应用价值.
Seismic data are often influenced unavoidably by various kinds of factors in the course of data acquisition, which reduces the SNR of the seismic data and increases the difficulty of fault recognition. The purpose of fault enhance is to describe the fault clearly and improve the SNR of the seismic data at the same time. Orientational edge preserving fault enhance technology is proposed, seismic event direction information is estimated by orientation filter at first, and then edge preserving filter technology is combined to enhance fault information. Applying this technology to the seismic data and clearer fault information with good continuity of seismic coherence can be acquired. This technology is helpful for structure interpretation and petroleum transportation system quantitative evaluation, thus possesses very important theory and application value.
Seismic data are often influenced unavoidably by various kinds of factors in the course of data acquisition, which reduces the SNR of the seismic data and increases the difficulty of fault recognition. The purpose of fault enhance is to describe the fault clearly and improve the SNR of the seismic data at the same time. Orientational edge preserving fault enhance technology is proposed, seismic event direction information is estimated by orientation filter at first, and then edge preserving filter technology is combined to enhance fault information. Applying this technology to the seismic data and clearer fault information with good continuity of seismic coherence can be acquired. This technology is helpful for structure interpretation and petroleum transportation system quantitative evaluation, thus possesses very important theory and application value.
引文
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[10] 刘财,李红星,陶春辉等.模糊嵌套多级中值滤波方法及其在地震数据处理中的应用.地球物理学报,2007,50(5) :1534～1542 Liu C,Li H X,Tao C H,et al.A new fuzzy nesting multilevel median filter and its application to seismic data processing.Chinese J.Geophys.(in Chinese),2007,50(5) :1534～1542
[2] Gersztenkorn A,Marfurt K J.Eigenstructure-based coherence computations as an aid to 3-D structural and stratigraphie mapping.Geophysics,1999,64:1468～1479
[3] Cohen I,Coult N,Vassiliou A.Detection and extraction of fault surfaces in 3D seismic data.Geophysics,2006,71(4) :21～27
[4] Hesthammer J.Improving seismic data for structural interpretation.The Leading Edge,1999,18:226～247
[5] Fehmers G,Hocker C.Fast structural interpretation with stucture-oriented filtering.Geophysics,1999,68:1286～1293
[6] Lavialle O,Pop S,Germain C,et al.Seismic fault preserving diffusion.Journal of Applied Geophysics,2007,61(2) :132～141
[7] Bakker P,Verbeek P W,Van Vliet L J.Edge preserving orientation adaptive filtering.Computer Vision and Pattern Recognition Conference,Colorado,U.S.A.1999,535～540
[8] Freeman W T.Steerable filters and local analysis of image structure[Ph.D.thesis].Massachusetts:Massachusetts Institute of Technology,1992
[9] Bakker P.Image structure analysis for seismic interpretation[Ph.D.thesis].Delft:Delft University of Technology,2002,6
[10] 刘财,李红星,陶春辉等.模糊嵌套多级中值滤波方法及其在地震数据处理中的应用.地球物理学报,2007,50(5) :1534～1542 Liu C,Li H X,Tao C H,et al.A new fuzzy nesting multilevel median filter and its application to seismic data processing.Chinese J.Geophys.(in Chinese),2007,50(5) :1534～1542
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