一种有效的地震道插值方法

doi:10.6038/j.issn.1004-2903.2012.06.033

地球物理学进展 ›› 2012, Vol. 27 ›› Issue (6): 2561-2569.doi: 10.6038/j.issn.1004-2903.2012.06.033

一种有效的地震道插值方法

王立明¹, 刘保华², 许江¹, 胡毅¹, 毛建利¹, 李海东¹

1. 国家海洋局第三海洋研究所海洋与海岸地质环境开放实验室, 厦门 361005;
2. 国家海洋局深海基地, 青岛 266061

收稿日期:2011-12-21 修回日期:2012-03-10 出版日期:2012-12-20 发布日期:2012-12-20
作者简介:王立明,男,1978年生,博士,国家海洋局第三海洋研究所地球探测与信息技术专业,主要从事应用地球物理处理解释方面研究方向.(E-mail:wlming78@163.com)
基金资助:
国家海洋局第三海洋研究所基本科研业务基金(海三科2011026);国家海洋局极地考察项目(CHINARE2012-01-03)和国家863计划项目"深水高分辨率地层探测技术"(20060109A1004)联合资助.

An effective seismic trace interpolation method

WANG Li-ming¹, LIU Bao-hua², XU Jiang¹, HU Yi¹, MAO Jian-li¹, LI Hai-dong¹

1. Environmental Marine Geology Open Lab, The Third Institute of Oceanography. S.O.A., Xiamen 361005, China;
2. National Deep-sea Research center. SOA. Qingdao 266061, China

Received:2011-12-21 Revised:2012-03-10 Online:2012-12-20 Published:2012-12-20

摘要/Abstract

摘要： 地震处理中重要的环节之一是地震道插值技术.野外采集过程中常会碰到大空间采样、坏道和数据分布不规则等问题.为满足地震数据处理精度要求,需进行地震道插值,提高成像效果.本文针对Zwartjes的基于非二次模型权函数稀疏反演傅里叶插值(FRSI)法存在的问题,如不规则地震道插值时不能去掉产生的噪声、假频及插值道振幅弱,等距道插值时不能准确插值,效果差,提出了改进方法,即扩大原有距离,使波数采样变密,依据似二维f-k频谱图,取中间某一范围频谱值,去除假频和噪声,以提高振幅能量.理论与实际测试验证了修改后的方法插值效果更好.

Abstract: One of the important links in seismic processes is seismic trace interpolation technique. There are many problems often happened in seismic acquisition such as large spatial sampling, dead traces and irregular sampling etc. To meet accuracy requirements of seismic data processing, it need be interpolated to improve imaging results. Zwartjes etc present a method of Fourier reconstruction with sparse inversion (FRSI) based on non-quadratic model weight function, which cannot remove alias and noise and improve weakly the amplitude of interpolated traces with unequal group interval data, and cannot interpolate correctly seismic traces with equal group interval data. Therefore, the paper proposes an improved method. Extending original length, thickening spatial and wavenumber sampling and taking out certain spectra by similar f-k spectra can eliminate alias and noise and enhance the amplitude energy. Tests of synthetic models and real seismic data proved that the modified method interpolated better.

中图分类号:

P631

王立明, 刘保华, 许江, 胡毅, 毛建利, 李海东. 2012. 一种有效的地震道插值方法. 地球物理学进展, 27(6): 2561-2569. doi: 10.6038/j.issn.1004-2903.2012.06.033 .

WANG Li-ming, LIU Bao-hua, XU Jiang, HU Yi, MAO Jian-li, LI Hai-dong. 2012. An effective seismic trace interpolation method. Progress in Geophysics. 27(6): 2561-2569. doi: 10.6038/j.issn.1004-2903.2012.06.033 .

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一种有效的地震道插值方法

An effective seismic trace interpolation method

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