自适应压制鬼波的宽频逆时偏移成像方法
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- 论文作者：孙文博 ; 张金淼 ; 朱振宇 ; 王艳冬 ; 王小六
- 年：2017
- 作者机构：中海油研究总院;
- 论文关键词：宽频 ; 逆时偏移 ; 鬼波压制 ; 低频恢复
- 会议召开时间：2017-04-25
- 会议录名称：中国石油学会2017年物探技术研讨会论文集
- 语种：中文
- 分类号：P631.46
- 学会代码：SYDQ
- 会议名称：中国石油学会2017年物探技术研讨会
- 会议地点：中国天津
- 主办单位：中国石油学会物探专业委员会
- 学会名称：石油地球物理勘探编辑部
- 页数：4
- 文件大小：1806k
- 原文格式：O
- 会议级别：全国
摘要
近几年,海上宽频地震勘探技术展现出诱人的应用效果,受到业界广泛关注。为此本文研发一种自适应压制鬼波的宽频逆时偏移成像方法,通过修改波动方程边值条件,在逆时偏移波场延拓中实现自适应压制鬼波,达到深度域宽频成像,尤其能有效恢复低频成分。该方法几乎不增加额外偏移计算量,并易于实现三维鬼波压制。通过含鬼波数值模型试算,验证了该方法压制鬼波宽频成像的有效性,又分别应用于深水、浅水和OBC等实际资料,均获得理想的深度域宽频成像效果,显著改善了中深层成像质量,说明该方法具有较好的实际应用前景。
引文
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[4]Vaage,S.T.,S.T.L.Tenghamn,and C.N.Borresen.System for combining signals of pressure sensors and particle motion sensors in marine seismic streamers:U.S.Patent 0,2005,195,686
[5]Mayhan,J.D.,P.Terenghi,A.B.Weglein,and N.Chemingui.First use of Green's theorem derived source side deghosting on deep water Gulf of Mexico synthetic and field data:82nd Annual International Meeting,SEG,Expanded Abstracts,2012,31
[6]Zhang,Y.,G.Roberts,and A Khalil.Compensating for source and receiver ghost effects in reverse time migration:82nd Annual International Meeting,SEG,Expanded Abstracts,2012,1-5