塔河地区检波器组合方式选择及效果分析
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摘要
野外检波器组合可以对线性干扰波进行压制。塔河地区地震采集资料面波和线性干扰发育,能量强,严重降低了近—中道地震数据的信噪比。本文首先对研究区干扰波的特征进行了分析,然后依据检波器组合的压制效应,建立了本区的组合压制特性图谱,指出沿图谱对角线方向组合的压制效果最优。并且从理论上对三种不同检波器组合方法的压制效果进行分析对比,得出"品字形"组合方式在该区有较好的压制效果,并通过野外试验验证了结论的正确性。
Geophone arrays can suppress linear noise.Middle and near offset seismic data in Tahe area is seriously contaminated by surface wave and linear noise,which causes low signal-to-noise ratio.In this paper,first we analyze noise characteristics in the area.And then we build a noise-suppressing map based on noise-suppressing effects of different geophone arrays,and notice that the best suppression is along the diagonal direction of the map.Finally theoretical comparisons among three array patterns have been made.It is proved that thethree-square shape'array patterns has the best suppressing effect based on comparison result,which is confirmed in the field seismic data acquisition.
Geophone arrays can suppress linear noise.Middle and near offset seismic data in Tahe area is seriously contaminated by surface wave and linear noise,which causes low signal-to-noise ratio.In this paper,first we analyze noise characteristics in the area.And then we build a noise-suppressing map based on noise-suppressing effects of different geophone arrays,and notice that the best suppression is along the diagonal direction of the map.Finally theoretical comparisons among three array patterns have been made.It is proved that thethree-square shape'array patterns has the best suppressing effect based on comparison result,which is confirmed in the field seismic data acquisition.
引文
[1]李庆忠,魏继东.论检波器横向拉开组合的重要性.石油地球物理勘探,2008,43(4):375-382.Li Qingzhong,Wei Jidong.Talk about importance of crossline array of geophone on spread.OGP,2008,43(4):375-382.
[2]王珂.检波器组合对高分辨率地震勘探的影响.中国煤炭地质,2010,22(7):61-65.Wang Ke.Geophone array’s impact on HR seismic prospecting.Coal Geology of China,2010,22(7):61-65.
[3]曹务祥.单道接收地震资料的室内组合方法.石油地球物理勘探,2006,41(6):615-618.Cao Wuxiang.Indoor array for unite single trace receiving seismic data.OGP,2006,41(6):615-618.
[4]魏继东.检波器数量对组合压噪能力的影响.物探与化探,2011,35(2):238-242.Wei Jidong.The effects of the number of geophones in array on noise attenuation.Geophysical&Geochemical Exploration,2011,35(2):238-242.
[5]魏继东,丁伟.检波器野外组合因素对地震资料品质的影响分析.石油物探,2010,49(3):312-318.Wei Jidong,Ding Wei.Impact analysis of geophone array factors on seismic data quality.GPP,2010,49(3):295-298.
[6]曹务祥.检波器组合问题的分析.石油物探,2008,47(5):505-510.Cao Wuxiang.Analysis on the problems of geophone array.GPP,2008,47(5):505-510.
[7]孙成禹,孙甜甜,彭洪超等.单点地震数据的一致性组合叠加方法.石油地球物理勘探,2009,44(增刊1):23-28.Sun Chengyu,Sun Tiantian,Peng Hongchao et al.Consistent array stacking method for single point seismic data.OGP,2009,44(S1):23-28.
[8]张智,李飞,黄志芳等.地震勘探中检波器组合特征研究.地球物理学进展,2009,24(6):2117-2121.Zhang Zhi,Li Fei,Huang Zhifang et al.Study on character of geophone array in seismic exploration.Progress in Geophysics,2009,24(6):2117-2121.
[9]Julien Meunier.Seismic Acquisition from Yesterday to Tomorrow.Distinguished Instructor Shot Course,2011.
[10]罗岐峰,彭章池,王海立等.重新认识地震组合检波器的作用.石油地球物理勘探,2008,43(3):257-264.Luo Qifeng,Peng Zhangchi,Wang Haili et al.Understanding role of seismic geophone array again.OGP,2008,43(3):257-264.
[2]王珂.检波器组合对高分辨率地震勘探的影响.中国煤炭地质,2010,22(7):61-65.Wang Ke.Geophone array’s impact on HR seismic prospecting.Coal Geology of China,2010,22(7):61-65.
[3]曹务祥.单道接收地震资料的室内组合方法.石油地球物理勘探,2006,41(6):615-618.Cao Wuxiang.Indoor array for unite single trace receiving seismic data.OGP,2006,41(6):615-618.
[4]魏继东.检波器数量对组合压噪能力的影响.物探与化探,2011,35(2):238-242.Wei Jidong.The effects of the number of geophones in array on noise attenuation.Geophysical&Geochemical Exploration,2011,35(2):238-242.
[5]魏继东,丁伟.检波器野外组合因素对地震资料品质的影响分析.石油物探,2010,49(3):312-318.Wei Jidong,Ding Wei.Impact analysis of geophone array factors on seismic data quality.GPP,2010,49(3):295-298.
[6]曹务祥.检波器组合问题的分析.石油物探,2008,47(5):505-510.Cao Wuxiang.Analysis on the problems of geophone array.GPP,2008,47(5):505-510.
[7]孙成禹,孙甜甜,彭洪超等.单点地震数据的一致性组合叠加方法.石油地球物理勘探,2009,44(增刊1):23-28.Sun Chengyu,Sun Tiantian,Peng Hongchao et al.Consistent array stacking method for single point seismic data.OGP,2009,44(S1):23-28.
[8]张智,李飞,黄志芳等.地震勘探中检波器组合特征研究.地球物理学进展,2009,24(6):2117-2121.Zhang Zhi,Li Fei,Huang Zhifang et al.Study on character of geophone array in seismic exploration.Progress in Geophysics,2009,24(6):2117-2121.
[9]Julien Meunier.Seismic Acquisition from Yesterday to Tomorrow.Distinguished Instructor Shot Course,2011.
[10]罗岐峰,彭章池,王海立等.重新认识地震组合检波器的作用.石油地球物理勘探,2008,43(3):257-264.Luo Qifeng,Peng Zhangchi,Wang Haili et al.Understanding role of seismic geophone array again.OGP,2008,43(3):257-264.
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