ISSN 1673-8217 CN 41-1388/TE
主管:中国石油化工集团有限公司 主办:中国石油化工股份有限公司河南油田分公司
彭才, 常智, 曾涛, 朱仕军. 2008: 动态反褶积研究及效果分析. 石油地质与工程, 22(01): 30-33+14-15.
引用本文: 彭才, 常智, 曾涛, 朱仕军. 2008: 动态反褶积研究及效果分析. 石油地质与工程, 22(01): 30-33+14-15.
2008: Research on dynamic deconvolution and its effect analysis. Petroleum Geology and Engineering, 22(01): 30-33+14-15.
Citation: 2008: Research on dynamic deconvolution and its effect analysis. Petroleum Geology and Engineering, 22(01): 30-33+14-15.

动态反褶积研究及效果分析

Research on dynamic deconvolution and its effect analysis

  • 摘要: 目前常用的反褶积方法有多种,这些反褶积方法都是基于传统的褶积模型,在做反褶积前,先要对衰减地震道做振幅补偿,因而在提高分辨率时具有局限性。在传统的褶积模型中,假设子波在传播过程中振幅不发生变化,实际上子波在传播过程中振幅是逐渐衰减的,因此需要建立能够描述子波动态传播的褶积模型。以动态褶积模型为理论基础,不需要对衰减地震道做振幅补偿,可直接实现分辨率处理。将对脉冲反褶积与动态反褶积结果进行比较,效果表明,动态反褶积方法具有双重功能:具有提高地震分辨率的功能;具有由于吸收引起振幅衰减的补偿功能。理论模型分析与实例计算验证了动态反褶积方法的正确性。

     

    Abstract: The current common deconvolution methods are based on the conventional convolution model,in which before de- convolution,the amplitude compensation has to be per- formed for the attenuation seismic channel.Therefore,it is limited to enhance the seismic resolution.In the conventional convolution model,it is supposed that the wavelet amplitude do not attenuate in the spreading process.But,in fact,the wavelet attenuates gradually,so it is necessary to establish a convolution model to describe the dynamic transmission.In the theory of dynamic convolution,the seismic resolution can be obtained without conducting the amplitude compensation for the attenuation seismic channel.In contrast with spike deconvolution,the dynamic deconvolution functions appar- ently in the followings:1)to enhance the seismic resolution; 2)to compensate the amplitude attenuation due to absorp- tion.Analysis on theoretical model and calculation of case studies validate the method of dynamic deconvolution.

     

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