波动方程叠前偏移在碳酸盐岩成像中的应用研究

王小卫, 姚姚, 刘文卿, 王艳香

doi:10.11764/j.issn.1672-1926.2011.05.874

天然气地球科学 >

2011 , Vol. 22 >Issue 5: 874 - 877

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.05.874

天然气勘探

波动方程叠前偏移在碳酸盐岩成像中的应用研究

展开

1.中国地质大学，湖北武汉 430047；
2.中国石油勘探开发研究院西北分院，甘肃兰州 730000

王小卫（1967-），男，甘肃临夏人，高级工程师，在读博士，主要从事碳酸盐岩地震资料处理方法研究.

收稿日期: 2010-11-24

修回日期: 2011-06-20

网络出版日期: 2011-10-10

收起

Application of Wave Equation Prestack Migration in Carbonate Imaging

Expand

1.China University of Geosciences,Wuhan 430074,China;
2.Northwest Branch of Resarch Institute of Petroleum Exploration and Development,PetroChina,Lanzhou 730000,China.

Received date: 2010-11-24

Revised date: 2011-06-20

Online published: 2011-10-10

Fold

摘要

叠前偏移是解决强横向变速情况下复杂构造成像的一种有效手段，在碳酸盐岩成像处理研究中，利用波动方程叠前偏移较叠后偏移能获得分辨率高、保幅性好的偏移成果，孔洞能得到很好的刻画，串珠聚焦程度好，归位更加合理，能真实反映地下的构造形态，提高碳酸盐岩岩溶地形的地震预测成功率。对时间偏移和深度偏移在理论方法、适用性和处理剖面效果方面进行了分析对比，在地下构造复杂或横向速度变化较大时，叠前深度偏移能获得更好的效果。速度建模是影响叠前偏移成像技术的核心问题之一，获得准确的层速度是叠前深度偏移成功的关键。

关键词： 波动方程; 碳酸盐岩; 叠前时间偏移; 叠前深度偏移; 速度建模

本文引用格式

王小卫, 姚姚, 刘文卿, 王艳香 . 波动方程叠前偏移在碳酸盐岩成像中的应用研究[J]. 天然气地球科学, 2011 , 22(5) : 874 -877 . DOI: 10.11764/j.issn.1672-1926.2011.05.874

Abstract

Prestack migration has been an effectively method in some areas with complicated structure and dramatic lateral variation in velocity.In comparison with the wave equation pre-stack migration method to post migration method,the pre-stack migration method in seismic imagery processing of fracture-cave in carbonate rock has ability to obtain high resolution and amplitude-preserved migration results,finely portray the fracture-cave,and highly draw a string of beads.The migration results can reflect real structure underground and enhance the success rate of seismic prediction in carbonate karst area.We compare the pre-stack time migration method with the pre-stack depth migration method in theory,applicability and processing seismic section,and find out that the pre-stack depth migration method can obtain the profitable result in some areas with complicated structure and dramatic lateral variation in velocity.Velocity modeling is an important technique in wave equation pre-stack depth migration，so an accurate interval velocity is a key for wave equation pre-stack depth migration.

Key words： Wave equation; Carbonate; Prestack time migration; Prestack depth migration; Velocity modeling

参考文献

［1］z Yilmaz.Seismic Data Analysis
[M].USA:Society of Exploration Geophysicists,2001.
［2］Su Qin,He Zhenhua,Tian Yancan,et al.Piedmont with a complex structure in the pre-stack depth migration imaging method and its application［J］.Natural Gas Geoscience,2009,20(4):571-575.［苏勤,贺振华，田彦灿，等.山前带复杂构造成像中叠前深度偏移方法研究及应用［J］.天然气地球科学,2009,20（4）：571-575.］
［3］Wang Xishuang,Liang Qi,Xu Ling,et al.Application and progress of prestack depth migration technology
[J].Oil Geophysical Prospecting,2007,42（6）:727-732.［王喜双，梁奇，徐凌,等.叠前深度偏移技术应用与进展
[J].石油地球物理勘探，2007，42（6）：727-732.］
［4］He Ying,Wang Huazhong,Ma Zaitian,et al.Wave equation prestack depth imaging in complex terrain conditions［J］.Petroleum Geophysical Exploration,2002,25(3):13-19.［何英,王华忠,马在田，等.复杂地形条件下波动方程叠前深度成像［J］.石油地球物理勘探,2002,25(3):13-19.］
［5］Zhang Jianwei,Lu Lieqin,Qiang Fangqing,et al.Contiguous two-dimensional pre-stack depth migration processing and image modeling techniques［J］.Natural Gas Geoscience,2003,14 (3) :203-206.［张建伟,鲁烈琴,强芳青,等.二维叠前深度偏移连片处理及成像建模技术［J］.天然气地球科学，2003，14（3）：203-206.］
［6］Ma Shufang,Li Zhenchun.Review of wave equation prestack depth migration methods
[J].Progress in Exploration Geophysics,2007,30（3）:153-160.［马淑芳，李振春.波动方程叠前深度偏移方法综述
[J].勘探地球物理进展，2007，30（3）:153-160.］
［7］Ma Zaitian.Seismic Migration Imaging
[M].Beijing:Petroleum Industry Press,1989.［马在田.地震偏移成像
[M].北京：石油工业出版社,1989.］
［8］Zhang Tieqiang,Wang Zhenghe.The application of pre-stack depth migration on complicated Structures’imaging
[J].Computing Techniques for Geophysical and Geochemical Exploration,2007,29（4）:281-284.［张铁强，王正和.叠前深度偏移在复杂构造模型成像中的应用
[J].物探化探计算技术，2007，29（4）:281-284.］

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献