基于高阶Radon域的同时震源波场分离
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摘要
同时震源技术是近几年勘探地球物理领域一个热点问题,该技术可以提高野外采集效率,改善偏移成像质量。同时震源数据处理的关键在于将混合的炮记录进行分离。该方法基于稀疏约束反演的基本原理,利用共检波点域主炮数据相干,辅炮数据不相干的特性,将共检波点域数据转换到高阶Radon域进行稀疏表示,然后在Radon域利用阈值进行约束实现反演分离。三个模型的测算结果均获得了较好的分离结果,验证了稀疏域选取的合理性以及反演方法的准确性。
Since simultaneous source technology can enhance the acquisition efficiency and improves the quality of seismic data, it has been a hot issue in exploration geophysics recent years. The key point for simultaneous source processing is to separate the blended seismic data. We formulated the forward modeling in the common receiver domain, in which one source is coherent and incoherent for others. For this character, we transform the common receiver seismic data into Radon domain, then use shaping regularization to constrain the model, and iteration is designed for optimization. Ideal results from our model tests show that our method performs better in both efficiency and accuracy.
Since simultaneous source technology can enhance the acquisition efficiency and improves the quality of seismic data, it has been a hot issue in exploration geophysics recent years. The key point for simultaneous source processing is to separate the blended seismic data. We formulated the forward modeling in the common receiver domain, in which one source is coherent and incoherent for others. For this character, we transform the common receiver seismic data into Radon domain, then use shaping regularization to constrain the model, and iteration is designed for optimization. Ideal results from our model tests show that our method performs better in both efficiency and accuracy.
引文
[1]Zhou Y,Gao J,Chen W,et al.Seismic Simultaneous Source Separation via Patchwise Sparse Representation[J].IEEE Transactions on Geoscience and Remote Sensing,2016,54(9):5271-5284.
[2]Li C,Mosher C C,Morley L C,et al.Joint source deblending and reconstruction for seismic data[M]//SEG Technical Program Expanded Abstracts 2013.Society of Exploration Geophysicists,2013:82-87.
[3]Beasley C J,Chambers R E,Jiang Z.A new look at simultaneous sources[M]//SEG Technical Program Expanded Abstracts 1998.Society of Exploration Geophysicists,1998:133-135.
[4]Berkhout A J.Changing the mindset in seismic data acquisition[J].The Leading Edge,2008,27(7):924-938.
[5]Godwin J,Sava P.2010.Simultaneous source imaging by amplitude encoding[J].CWP report,2010,645.
[6]Moore I.Simultaneous Sources-Continuous Acquisition and Processing for Marine Data[C]//76th EAGE Conference and Exhibition 2014.2014.
[7]Liu Z,Wang B,Specht J,et al.Enhanced adaptive subtraction method for simultaneous source separation[M]//SEG Technical Program Expanded Abstracts 2014.Society of Exploration Geophysicists,2014:115-119.
[8]韩立国,谭尘青,吕庆田等.基于迭代去噪的多源地震混合采集数据分离[J].地球物理学报,2013,56(7):2402-2412.
[9]Moore I,Dragoset B,Ommundsen T,et al.Simultaneous source separation using dithered sources[M]//SEG Technical Program Expanded Abstracts 2008.Society of Exploration Geophysicists,2008:2806-2810.
[10]Mahdad A.Deblending of seismic data[D].TU Delft,Delft University of Technology,2012.
[11]Chen Y,Fomel S,Hu J.Iterative deblending of simultaneoussource seismic data using seislet-domain shaping regularization[J].Geophysics,2014,79(5):V179-V189.
[12]Zu S,Zhou H,Chen Y,et al.A periodically varying code for improving deblending of simultaneous sources in marine acquisition[J].Geophysics,2016,81(3):V213-V225.
[13]Sacchi M D.Sparse inversion of the Radon coefficients in the presence of erratic noise with application to simultaneous seismic source processing[C]//Acoustics,Speech and Signal Processing(ICASSP),2014 IEEE International Conference on.2014:2386-2389.
[14]唐欢欢,毛伟建.3D高阶抛物Radon变换地震数据保幅重建[J].地球物理学报,2014,57(9):2918-2927.
[15]Fomel S.Shaping regularization in geophysical-estimation problems[J].Geophysics,2007,72(2):R29-R36.
[16]薛亚茹,唐欢欢,陈小宏.高阶高分辨率Radon变换地震数据重建方法[J].石油地球物理勘探,2014,49(1):95-100.
[17]Berkhout A J,Blacquière G,Verschuur D J.The concept of double blending:Combining incoherent shooting with incoherent sensing[J].Geophysics,2009,74(4):A59-A62.
[18]祖绍环,周辉,陈阳康,等.2016.不规则采样的多震源数据整形正则化分离方法[J].石油地球物理勘探,2016,51(2):247-253.
[19]巩向博.高精度.Radon变换及其应用研究[D].吉林:吉林大学,2008.
[20]Aster R C,Borchers B,Thurber C H.Parameter Estimation and Inverse Problems[M].New York:Academic Press,2011.
[21]王典,刘财,刘洋,等.基于提升算法和百分位数软阈值的小波去噪技术[J].地球物理学进展,2008,23(4):1124-1130.
[22]Yang P,Gao J,Chen W.On analysis-based two-step interpolation methods for randomly sampled seismic data[J].Computers&Geosciences,2013,51:449-461.
[23]Hennenfent G,Herrmann F J.Seismic denoising with nonuniformly sampled curvelets[J].Computing in Science&Engineering,2006,8(3):16-25.
[2]Li C,Mosher C C,Morley L C,et al.Joint source deblending and reconstruction for seismic data[M]//SEG Technical Program Expanded Abstracts 2013.Society of Exploration Geophysicists,2013:82-87.
[3]Beasley C J,Chambers R E,Jiang Z.A new look at simultaneous sources[M]//SEG Technical Program Expanded Abstracts 1998.Society of Exploration Geophysicists,1998:133-135.
[4]Berkhout A J.Changing the mindset in seismic data acquisition[J].The Leading Edge,2008,27(7):924-938.
[5]Godwin J,Sava P.2010.Simultaneous source imaging by amplitude encoding[J].CWP report,2010,645.
[6]Moore I.Simultaneous Sources-Continuous Acquisition and Processing for Marine Data[C]//76th EAGE Conference and Exhibition 2014.2014.
[7]Liu Z,Wang B,Specht J,et al.Enhanced adaptive subtraction method for simultaneous source separation[M]//SEG Technical Program Expanded Abstracts 2014.Society of Exploration Geophysicists,2014:115-119.
[8]韩立国,谭尘青,吕庆田等.基于迭代去噪的多源地震混合采集数据分离[J].地球物理学报,2013,56(7):2402-2412.
[9]Moore I,Dragoset B,Ommundsen T,et al.Simultaneous source separation using dithered sources[M]//SEG Technical Program Expanded Abstracts 2008.Society of Exploration Geophysicists,2008:2806-2810.
[10]Mahdad A.Deblending of seismic data[D].TU Delft,Delft University of Technology,2012.
[11]Chen Y,Fomel S,Hu J.Iterative deblending of simultaneoussource seismic data using seislet-domain shaping regularization[J].Geophysics,2014,79(5):V179-V189.
[12]Zu S,Zhou H,Chen Y,et al.A periodically varying code for improving deblending of simultaneous sources in marine acquisition[J].Geophysics,2016,81(3):V213-V225.
[13]Sacchi M D.Sparse inversion of the Radon coefficients in the presence of erratic noise with application to simultaneous seismic source processing[C]//Acoustics,Speech and Signal Processing(ICASSP),2014 IEEE International Conference on.2014:2386-2389.
[14]唐欢欢,毛伟建.3D高阶抛物Radon变换地震数据保幅重建[J].地球物理学报,2014,57(9):2918-2927.
[15]Fomel S.Shaping regularization in geophysical-estimation problems[J].Geophysics,2007,72(2):R29-R36.
[16]薛亚茹,唐欢欢,陈小宏.高阶高分辨率Radon变换地震数据重建方法[J].石油地球物理勘探,2014,49(1):95-100.
[17]Berkhout A J,Blacquière G,Verschuur D J.The concept of double blending:Combining incoherent shooting with incoherent sensing[J].Geophysics,2009,74(4):A59-A62.
[18]祖绍环,周辉,陈阳康,等.2016.不规则采样的多震源数据整形正则化分离方法[J].石油地球物理勘探,2016,51(2):247-253.
[19]巩向博.高精度.Radon变换及其应用研究[D].吉林:吉林大学,2008.
[20]Aster R C,Borchers B,Thurber C H.Parameter Estimation and Inverse Problems[M].New York:Academic Press,2011.
[21]王典,刘财,刘洋,等.基于提升算法和百分位数软阈值的小波去噪技术[J].地球物理学进展,2008,23(4):1124-1130.
[22]Yang P,Gao J,Chen W.On analysis-based two-step interpolation methods for randomly sampled seismic data[J].Computers&Geosciences,2013,51:449-461.
[23]Hennenfent G,Herrmann F J.Seismic denoising with nonuniformly sampled curvelets[J].Computing in Science&Engineering,2006,8(3):16-25.