叠前时间偏移技术在松辽盆地应用研究叠前时间偏移技术在松辽盆地应用研究

赵玉莲, 成旭波, 鲁烈琴, 丁彩琴

doi:10.11764/j.issn.1672-1926.2010.06.1041

天然气地球科学 >

2010 , Vol. 21 >Issue 6: 1041 - 1045

DOI: https://doi.org/10.11764/j.issn.1672-1926.2010.06.1041

天然气地球物理勘探

叠前时间偏移技术在松辽盆地应用研究叠前时间偏移技术在松辽盆地应用研究

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1.成都理工大学，四川成都 610059；
2.中国石油勘探开发研究院西北分院，甘肃兰州 730020；
3.浙江省地球物理地球化学勘察院，浙江杭州 310005

赵玉莲(1975-)，女，甘肃通渭人，在读博士，主要从事地震数据处理工作.

收稿日期: 2009-11-09

修回日期: 2010-04-22

网络出版日期: 2010-12-10

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Application of Prestack Time Migration in Songliao Basin

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1.Chengdu University of Technology，Chengdu 610059,China;
2.Northwest Branch,Research Institute of Petroleum Exploration and Development,PetroChina,Lanzhou 730020,China;
3.Zhejiang Geophysical and Geochemical Prospecting Academy,Hangzhou 310005,China.

Received date: 2009-11-09

Revised date: 2010-04-22

Online published: 2010-12-10

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摘要

针对松辽盆地某区地震资料特点和数据处理难点，进行了针对性的三维静校正、叠前组合去噪和叠前时间偏移处理,取得了比较显著的效果。同时从叠前时间偏移的基本原理和实现过程,讨论了该区叠前偏移的孔径、反假频参数、速度模型优化及射线追综方法关键参数的选取,通过叠前时间偏移和叠后时间偏移结果的对比与分析可知,叠前时间偏移使地震资料的成像精度得到了较大幅度的提高,剖面上断点清楚,断层清晰,波组特征明显。

关键词： 松辽盆地; 静校正; 叠前时间偏移; 速度; 模型; 孔径

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赵玉莲, 成旭波, 鲁烈琴, 丁彩琴 . 叠前时间偏移技术在松辽盆地应用研究叠前时间偏移技术在松辽盆地应用研究[J]. 天然气地球科学, 2010 , 21(6) : 1041 -1045 . DOI: 10.11764/j.issn.1672-1926.2010.06.1041

Abstract

Here we introduced the application of prestack time migration technology in Songliao basin.The 3D static correction,prestack combination noise attenuation and prestack time migration processing were carried out in this area and made a relatively obvious effect.Meanwhile,we discussed the key parameters such as aperture,aliased factor,velocity model adjusting and raytracing method based on the prestack time migration principle and realization.By comparing and analyzing the results of prestack and poststack migrations，it indicated that prestack time migration of seismic data substantially increased the imaging precision,the breakpoints and faults more clear and wave groups more obvious.

Key words： Songliao basin; Static ; correction; Pre-stack time migration; Velocity; Model; Aperture.

参考文献

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