| 井孔高分辨率Radon变换算子研究 |
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| 引用本文： | 宋建国,宋海燕,刘垒.井孔高分辨率Radon变换算子研究[J].地球物理学进展,2010,25(1):288-297. |
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| 作者姓名： | 宋建国 宋海燕 刘垒 |
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| 作者单位： | 1. 中国石油大学,华东,东营,266555
2. 中海油天津分公司勘探开发研究院,天津,300452 |
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| 基金项目： | 国家高新技术研究发展计划(863)项目 |
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| 摘 要： | 本文针对井间和3D VSP波场的线性特征，研究井孔地震波场线性高分辨率Radon变换算子，用于井孔地震波场分析与纵横波分离.在Radon变换原理分析基础上，采用基于柯西分布的高分辨率线性Radon变换对井孔数据进行Radon变换，其间通过对离散倾角叠加算子求取的研究，及对影响Radon能量收敛的重要参数阻尼因子算法的改进，使数据在Radon域以能量团的形式呈现，得到很好的收敛效果，基本解决了Radon域数据的一定程度的拖尾现象，消除了各能量团之间的平滑效应，采用柯西分布来规则化数据，提高了Radon域的分辨率，Radon域能量也收敛到一个点上，有利于上下行波或纵横波波场分离.最后通过反演结果和模型试算验证了该方法的可行性和稳定性.
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| 关 键 词： | 井间和3DVSP 离散倾角叠加 高分辨率Radon变换 柯西分布 改进的阻尼因子 |
| 收稿时间： | 2009-03-30 |
| 修稿时间： | 2009-09-22 |
High resolution radon transform operator of the borehole seismic wave field |
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| SONG Jian-guo,SONG Hai-yan,LIU Lei.High resolution radon transform operator of the borehole seismic wave field[J].Progress in Geophysics,2010,25(1):288-297. |
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| Authors: | SONG Jian-guo SONG Hai-yan LIU Lei |
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| Abstract: | According to apparent linear wavefield of crosswell and 3D VSP, we study the application of high resolution Radon transform to crosswell layout. In view of crosswell and 3D VSP layout, we use high resolution Radon transform based on Cauchy distribution to perform Radon transform for hole data. In this process, we study discrete dip overlay operator, improve damping factor that affects Radon energy convergence in order to let Radon energy converge, 6 resolve leggy in Radon data, and decouple smoothing effect among each energy group, we use Cauchy distribution to regularize data, let energy focus on one point, and improve Radon resolution. All these work well in wavefield separation. Finally, by inversion results and model trial, we verify the feasibility and stability of this method. |
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| Keywords: | crosswelland3DVSP discretedipoverlayoperator highresolutionRadontransform Cauchydistribution advanceddampingfactor |
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