敦煌盆地库姆塔格沙漠静校正方法
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摘要
本文针对敦煌盆地库姆塔格沙漠复杂的地表条件，选用小折射和大炮初至并经地形校正联合求取表层结构数据的方法。对小折射模型法、扩展广义互换法（EGRM）、初至回折波和折射波连续速度模型反演法（FCVI）等三种静校正方法进行了大量的试验。静校正数据分析和资料叠加处理的结果表明，FCVI方法是一种适用于该沙漠区的静校正方法。对该区约1300km二维地震资料使用FCVI方法进行静校正，取得了良好的效果。
In order to cope with complicated surface condition in Kumutake desert in theDunhuang basin, we derive surface-layer structure data from minor refraction data,first break times of normal seismic records and elevation corrections. Three staticsmethods (minor refraction modeling, extended generalized reciprocal and firstbreak inflection plus continuous refraction velocity inversion ) were tested widely.Theoretical data analysis and real data processing result show that the third methodis a desirable static correction method in the desert area. The method has been usedto achieve the static correction of 1300 km seismic data in the area, bringing goodeffect.
In order to cope with complicated surface condition in Kumutake desert in theDunhuang basin, we derive surface-layer structure data from minor refraction data,first break times of normal seismic records and elevation corrections. Three staticsmethods (minor refraction modeling, extended generalized reciprocal and firstbreak inflection plus continuous refraction velocity inversion ) were tested widely.Theoretical data analysis and real data processing result show that the third methodis a desirable static correction method in the desert area. The method has been usedto achieve the static correction of 1300 km seismic data in the area, bringing goodeffect.
引文
1 陈祖传.LVL折射新方法.石油地球物理勘探,1996,31(1):55～62
2 熊翥.地震数据数字处理应用技术,石油工业出版社,1993
3 魏修成,董敏煜.初至回折波、折射波连续速度模型反演静校正. SEG/CPS乌鲁木齐研讨会论文集,1996
2 熊翥.地震数据数字处理应用技术,石油工业出版社,1993
3 魏修成,董敏煜.初至回折波、折射波连续速度模型反演静校正. SEG/CPS乌鲁木齐研讨会论文集,1996
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