塔东北满加尔坳陷地震资料处理方法研究  

The Research of Seismic Data Processing in Manjia'er Tadongbei Depression Region

作　　者：范皓东[1] 顾汉明[2] 

机构地区：[1]西南石油局第五物探大队,湖南湘潭411104 [2]中国地质大学地球物理与空间信息学院,湖北武汉430074

出　　处：《工程地球物理学报》2011年第6期672-676,共5页Chinese Journal of Engineering Geophysics

摘　　要：塔东北满加尔坳陷地区地表地质条件恶劣,地下构造复杂。工区表现为地表起伏剧烈的高大沙丘,在这里陡坡、陡坎为主要地貌。受复杂地表因素影响,所获地震记录,各种干扰波发育,在大量试验及分析的基础上,采用沙丘曲线静校正、折射波静校正、剩余静校正相结合的办法有效地解决了由于地形起伏、低降速带速度与厚度的剧烈变化等因素所带来的静校正影响。实践证明,该方法系列能有效地解决满加尔地区复杂地表条件下静校正问题,对于提高地震资料的信噪比和地下成像质量能发挥积极作用。采用多域去噪、振幅补偿、串联反褶积等技术方法,提高了剖面的信噪比。In Manjia＇er,Tadongbei depression district,the geological condition of the earth＇s surface is rough and the underground structure is very complex.Tall dunes with the rugged surface are seen in this district.The physiognomy there is steep and scarp.With the complex factors,the obtained seismic data,the development with various disturbing waves are tested and analyzed in this paper.The dune curve static correction,refractive static correction and residual static correction are adopted to solve the problem caused by hypsography,low velocity and so on effectively.The result shows that the method is very effective in the use of the complex surface in ManJia＇er district.What＇s more,it plays an active role in improving seismic data＇s SNR（signal to noise ratio） and subsurface imaging quality.

关 键 词：复杂地表 静校正 多域去噪 振幅补偿 反褶积 

分 类 号：P631[天文地球—地质矿产勘探]