单点地震数据的一致性组合叠加方法
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摘要
为了解决常规野外检波器组合引起的高频振幅衰减、组合内道间差异等方面问题,本文在分析影响组合叠加效果的诸因素基础上,针对单点高密度采集数据,阐述了基于自适应匹配滤波的一致性组合叠加方法;通过构建标准道,采用自适应匹配滤波方法对子波波形和道间时差同时进行一致性校正,改善了组合叠加的效果。校正后地震记录的组合叠加响应能够较好地保持反射波原有的振幅和波形特征。模型和实际资料的处理效果验证了该方法的有效性和可行性。
In order to resolve the problem of high frequency attenuation caused by field geophone array and the intra-array differences,after analyzing the factors which affect results of array stacking, a consistent array stacking method which is based on the adaptive matched filtering is introduced for the single point high density acquired seismic data.By constructing the standard traces and applying adaptive matched filtering, a consistent correction were conducted for wavelet waveform and intra-trace time differences, as a result array and stacking effects were improved. The array stacking response of the corrected seismic records can maintain the original amplitude and waveform features of the seismic data. The processing results for the model and real data proved the effectiveness and feasibility of the method.
In order to resolve the problem of high frequency attenuation caused by field geophone array and the intra-array differences,after analyzing the factors which affect results of array stacking, a consistent array stacking method which is based on the adaptive matched filtering is introduced for the single point high density acquired seismic data.By constructing the standard traces and applying adaptive matched filtering, a consistent correction were conducted for wavelet waveform and intra-trace time differences, as a result array and stacking effects were improved. The array stacking response of the corrected seismic records can maintain the original amplitude and waveform features of the seismic data. The processing results for the model and real data proved the effectiveness and feasibility of the method.
引文
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[15]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
[16]金龙,陈小宏.时移地震非一致性影响研究与互均衡效果验证.勘探地球物理进展,2003,26(1):631~634
[17]邓怀群,刘雯林等.时间推移地震勘探中的互均化技术.天然气工业,2000,20(1):20~23
[2]Moldoveanu N,Uribe J and Stathopoulos D.Point-source/point-receiver land acquisition:Torrecillas-Mexico experi ment.Expended Abstracts of74thSEG Annual Meetiong,2004
[3]Orza R L and Panea I.Single sensors versus hard-wired arrays in amplitude analysis.Expended Ab-stracts of78th SEG Annual Meeting,2008:528~532
[4]Levy S and Oldenburg D W.Automatic phase correc-tion of common-midpoint stacked data.Geophysics,1987,52(1):51~59
[5]Eisner A Eand Hampson G.Decompositioninto mini-mum and maxi mum phase components.Geophysics,1990,55(7):897~901
[6]Xiao P,Xin P and Wanxiang Y.Application of highdensity acquisition in Jungar Basin,Western China.Expended Abstracts of76th SEG Annual Meeting,2006:90~94
[7]Panea I and Drijkoningen G.The spatial data-adaptivemini mum-variance distortionless-response beamform-er on seismic single-sensor data.Geophysics,2008,73(5):Q29~Q42
[8]Panea I.Array forming in the presence of phasevariations.The Leading Edge,2009,28(2):216~221
[9]郭向宇,周兴元.混合相位子波相位估算及校正.石油地球物理勘探,1998,33(1):214~221
[10]刘金俊,王修田,徐世浙.实现地震道零相位化的子波相位谱消去法.海洋地质与第四纪地质,1999,19(4)
[11]陈必远,陈明伟,易维启.时空变分频常相位校正.石油地球物理勘探,1997,32(1):103~108
[12]李合群,周兴元.时差常相位校正及加权叠加.石油地球物理勘探,2000,35(4):415~418
[13]孙成禹.空变地震子波提取方法研究.石油大学学报(自然科学版),2000,24(1):77~84
[14]张广智,刘洪,印兴耀.井旁道地震子波精细提取方法.石油地球物理勘探,2005,40(2):158~163
[15]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
[16]金龙,陈小宏.时移地震非一致性影响研究与互均衡效果验证.勘探地球物理进展,2003,26(1):631~634
[17]邓怀群,刘雯林等.时间推移地震勘探中的互均化技术.天然气工业,2000,20(1):20~23
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