几项地震处理技术的保幅性分析
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摘要
地震资料处理技术和流程多以构造成像为重点,而忽略了处理方法及参数变化对地震波振幅的改造,影响了处理结果的保幅性。基于模型数据和实际资料,对面波压制、几何扩散补偿、预测反褶积等几项关键处理技术的保幅性进行了分析,提出了提高保幅性的处理思路和流程。处理结果表明,采用合理的方法和流程,使面波压制、几何扩散补偿等处理环节的相对保幅性得到了明显提高。
The requirement for relative amplitude preservation of seismic data has become higher and higher.However,the techniques and procedures of seismic processing are mainly focused on structure imaging,but their effects on amplitude are often ignored,so the processing results are often badly amplitude-preserved.Based on real and model data,this paper has analyzed the characteristics of amplitude preservation of surface wave suppression,geometrical spread compensation and predictive deconvolution techniques.On the basis of amplitude-preservation analysis,the optimized processing methods and procedures are proposed.The analytical result shows that the amplitude features of seismic processing results can be preserved better.
The requirement for relative amplitude preservation of seismic data has become higher and higher.However,the techniques and procedures of seismic processing are mainly focused on structure imaging,but their effects on amplitude are often ignored,so the processing results are often badly amplitude-preserved.Based on real and model data,this paper has analyzed the characteristics of amplitude preservation of surface wave suppression,geometrical spread compensation and predictive deconvolution techniques.On the basis of amplitude-preservation analysis,the optimized processing methods and procedures are proposed.The analytical result shows that the amplitude features of seismic processing results can be preserved better.
引文
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[2]张军华,吕宁,田连玉,等.地震资料去噪方法技术综合评述[J].地球物理学进展,2006,21(2):546-553.
[3]罗国安,杜世通.小波变换及信号重建在压制面波中的应用[J].石油地球物理勘探,1996,31(3):337-349.
[4]蔡加铭,周兴元,吴律.f-x域算子外推去噪技术研究[J].石油地球物理勘探,1999,34(3):325-331.
[5]国九英,周兴元,俞寿朋.f-x域等道距道内插[J].石油地球物理勘探,1996,31(1):28-34.
[6]夏洪瑞,周开明.地震资料处理中相干干扰消除方法分析[J].石油物探,2003,42(4):526-529.
[7]周能丰,李青.振幅补偿与保幅处理探讨[J].小型油气藏,2005,10(4):23-25.
[8]陆基孟.地震勘探原理:上册[M].东营:石油大学出版社,1993:160-191.
[9]董敏昱.地震勘探[M].东营:中国石油大学出版社,2000:77-86.
[10]于平,赵震宇.勘探地震学数据处理中的三种反褶积技术[J].世界地质,2002,21(2):181-183.
[11]李生杰,施行觉.地表一致性分解及其分量分析[J].石油地球物理勘探,2002,37(2):122-128.
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