转换波地震资料处理的关键问题与解决方法  

Key Problems and Solutions in Processing Converted-Wave Seismic Data

作　　者：李国发[1] 彭苏萍[1] 何兵寿[1] 高日胜[1] 

机构地区：[1]中国矿业大学资源与安全工程学院,北京100083

出　　处：《中国矿业大学学报》2005年第1期41-45,共5页Journal of China University of Mining & Technology

基　　金：国家973项目(2002CB211707)

摘　　要：针对转换波地震资料检波点静校正量过大的问题,分析了现有的转换波处理技术、波形变化、静态时移对面波压制影响.结果认为,面波压制、转换波静校正、速度分析等是影响转换波处理质量的关键.提出了基于模型的面波压制技术和利用共检波点叠加静校正和最大叠加能量剩余静校正的解决方案,为提高转换波速度分析的精度,利用变速抽取共转换点道集的方法,实现了真正的共转换点速度分析.对三维转换波地震资料的处理结果表明了该方法的正确性和有效性.Aiming at the problem of large quantities of static correction of detection points, the converted-wave process technique and the effect of waveform change and static time shift on suppression of surface wave are analyzed. The authors hold that the suppression of surface wave, static correction of converted wave, and velocity analysis are the key for converted wave process. The problem-solving plan has been put forward based on the surface wave suppression technique, the static correction of common receiver stack, and the residual static correction of maximum stack-power. Real common converted point velocity analysis is achieved by using the velocity-variable common converted point gathering. The process of real 3D converted-wave seismic data shows that the methods are correct and effective.

关 键 词：转换波处理 面波 共转换点 检波点 速度分析 地震资料处理 静校正量 关键问题 技术 影响 

分 类 号：TD921[矿业工程—选矿] P631[天文地球—地质矿产勘探]