交互地震子波提取技术

英文篇名：A interactive technique for seismic wavelet extraction
中文刊名：石油大学学报(自然科学版)
英文刊名：Journal of the University of Petroleum ; China
作者：李国发 ; 牟永光 ; 王濮
英文作者：LI Guo-fa~1 ; MU Yong-guang~2 ; WANG Pu~1(1.School of Resources and Safety Engineering of China University of Mining and Technology ; Beijing 100083 ; China ; 2.Key Laboratory of Geophysical Exploration of China National Petroleum Corporation ; China University of Petroleum ; Beijing 102249 ; China)
中文关键词：地震子波 ; 提取 ; 混合相位 ; 交互处理 ; 复赛谱 ; 分辨率
英文关键词：seismic wavelet ; extraction ; mixed-phase ; interactive process ; cepstrum ; resolution
出版日期：2005-10-20
机构：中国矿业大学资源与安全工程学院,中国石油大学CNPC物探重点实验室,中国矿业大学资源与安全工程学院北京100083 ,北京102249 ,北京100083
年：2005
期：05
出版单位：石油大学学报(自然科学版)

摘要

利用子波的最大相位和最小相位分解技术,在复赛谱域得到一组具有相同振幅谱、不同相位谱的子波集合。根据方差模最大等数学物理准则以及用户对地震资料的先验信息和处理要求,借助于交互处理工具,用户可以从子波集合中确定其希望并认可的地震子波,从而完成子波反褶积、子波零相位化等提高分辨率的处理工作,达到识别和追踪薄层反射的地质要求。对物理模型采集的地震记录和实际野外采集的地震记录进行了子波提取实验,并利用提取的地震子波对地震资料进行了提高分辨率处理。实验结果证明了该方法的正确性和有效性。
By the decomposition of the minimum and maximum phase components,the group of wavelets with the same amplitude spectrum and different phase spectrum could be found in cepstrum domain.On the basis of the criterion of maximum variance module and the prior information and process demand,and by means of interactive process tool,users can find a desired wavelet among the group of wavelets.Furthermore,the seismic resolution can be improved by wavelet deconvolution and wavelet phase modulation for identifying and tracing the reflection events of thin-layers.Wavelets have been extracted from physical model record and real seismic record,and the tests for improvement of resolution also have been carried out with the extracted wavelets.All those verified the validity and effectiveness of the method.

引文

[1]GREGORY D Lazear.Mixed-phase wavelet estimationusing fourth-order cumulants[J].Geophysics,1993,58:1 042-1 051.
    [2]EISNER E,HAMPSON G.Decomposition into mini-mum and maximum phase components[J].Geophysics,1990,55:897-901.
    [3]MILTON J Porsani,BJORN Ursin.Mixed-phase decon-volution[J].Geophysics,1998,63:637-645.
    [4]EUGENE Lichman.Phase inversion deconvolution forlong and short period multiples attenuation[J].Geo-physical Prospecting,1995,43:469-486.
    [5]ROSA A L,ULRYCH T J.Processing via spectral mod-eling[J].Geophysics,1991,56:1 244-1 250.
    [6]赵波,俞寿朋,聂勋碧,等.谱模拟反褶积方法及其应用[J].石油地球物理勘探,1996,31(1):102-116.ZHAO Bo,YU Shou-peng,NIE Xun-bi,et al.Spec-tral-modeled deconvolution and its application[J].OilGeophysical Prospecting,1996,31(1):102-116.
    [7]李鲲鹏,李衍达,张学工,等.基于谱模拟技术的混合相位地震子波估计方法[J].石油物探,2001,40(2):21-28.LI Kun-peng,LI Yan-da,ZHANG Xue-gong,et al.The mixed phase wavelet estimate method based on spec-tral modeling[J].Geophysical Prospecting for Petroleum,2001,40(2):21-28.
    [8]郭向宇,周兴元,董敏煜.混合相位子波的相位估算及校正[J].石油地球物理勘探,1998,33(2):214-221.GUO Xiang-yu,ZHOU Xing-yuan,DONG Min-yu.Es-timation and correction of mixed phase wavelet phase[J].Oil Geophysical Prospecting,1998,33(2):214-221.