倾角约束的非线性层析反演速度建模技术应用研究
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- 论文作者：王兆旗 ; 李立胜 ; 叶月明
- 年：2017
- 作者机构：中国石油杭州地质研究院;
- 论文关键词：倾角约束 ; 非线性 ; 层析反演 ; 速度建模 ; 小尺度
- 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：P631.4
- 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：1243k
- 原文格式：O
- 会议级别：全国
摘要
浅层速度异常体会对深度域的成像造成构造畸变,精细刻画出异常体的形态非常消耗时间,而且需要处理人员掌握一定的地质知识。浅层用于估算剩余量(RMO)的有效偏移距范围有限,导致精确刻画出速度模型变得更加困难。倾角约束的非线性层析成像反演提供了一种非常有效的手段,通过在成本函数中引入局部相干同相轴的倾角项,使更新后的速度模型能够匹配期望倾角,从而达到精细化速度建模的目的。实例验证了倾角约束的层析反演速度建模技术能够解决小尺度速度变化问题,改善上拉和下拉现象,提高深层成像精度。
引文
[1]Guang Chen,Lingli Hu,2013.Dip-constrained tomography with weighting flow for paleo-canyons:a case study in Para-Maranhao Basin,Brazil:SEG 84th Ann.Internat.Page 4718-4722.
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[3]Guillaume,P.,Reinier M.,G.Lambare,etal.,2013,Dip constrained non-linear slope tomography:2013 SEG Technical Program Expanded Abstracts,SEG,D0454811-4815.
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[5]Wang Tengfei,Kang Wei and Cheng Jiubing,2014.Migration velocity model building using local angle domain nonlinear tomography[J].CPS/SEG Beijing 2014International Geophysical Conference:739-742.
[6]Guillaume,P.,G.Lambare,O.Leblanc,P.Mitouard,etal.,2008,Kinematic invariants:An efficient and flexible approach for velocity model building:78th Annual International Meeting,SEG,Expanded Abstracts,3687-3692.
[7]Adler,F.,R.Baina,M.ASoudani,P.Cardon,and J.-B.Richard,Nonlinear 3D tomographic least-squares inversion of residual moveout in Kirchhoff prestackdepth-migration common-image gathers:Gecphysics,2008,73:VE13-VE23.
[8]地震资料叠前偏移成像方法、原理和优缺点分析[M].[法]Etienne Robein著,王克斌等译.北京:石油工业出版社,2012(5):56~82.
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[2]Chen,G.,and H.Shen,2012,High-resolution tomography for paleo-canyons:A case study in Para-Maranhao Basin,Brazil:82nd Annual International Meeting,SEG,Expanded Abstracts.
[3]Guillaume,P.,Reinier M.,G.Lambare,etal.,2013,Dip constrained non-linear slope tomography:2013 SEG Technical Program Expanded Abstracts,SEG,D0454811-4815.
[4]Stork,C.,Reflection tomography in the postmigrated domain:Geophysics,1992,57:680-692.
[5]Wang Tengfei,Kang Wei and Cheng Jiubing,2014.Migration velocity model building using local angle domain nonlinear tomography[J].CPS/SEG Beijing 2014International Geophysical Conference:739-742.
[6]Guillaume,P.,G.Lambare,O.Leblanc,P.Mitouard,etal.,2008,Kinematic invariants:An efficient and flexible approach for velocity model building:78th Annual International Meeting,SEG,Expanded Abstracts,3687-3692.
[7]Adler,F.,R.Baina,M.ASoudani,P.Cardon,and J.-B.Richard,Nonlinear 3D tomographic least-squares inversion of residual moveout in Kirchhoff prestackdepth-migration common-image gathers:Gecphysics,2008,73:VE13-VE23.
[8]地震资料叠前偏移成像方法、原理和优缺点分析[M].[法]Etienne Robein著,王克斌等译.北京:石油工业出版社,2012(5):56~82.
[9]Lambare.Stereotomography[J].Geophysics,2008,73(5):25-31.
[10]Chauris,H.,M.Noble,G.Lambare,and P.Podvin,2002.Migration velocity analysis from locally coherent events in 2-D laterally heterogeneous media,Part I:Theoretical aspects.Geophysics,67(4):1213-1224.