三维折射波静校正
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摘要
在地表复杂的工区进行三维地震勘探,静校正是资料处理中的一个重要环节。本文提出了用折射波初至时间计算静校正量的新方法,即分别在共炮点域、共接收点域、共偏移距域交互计算静校正量。通过对大量数据进行统计,用交互迭代的方法求出全局最优解。实际地震资料处理效果表明,该方法适合解决地表复杂地区的静校正问题
Static correction is an important step in processing 3 D seismic data from surface complicated area. A new method for deriving static correction values from first breaks of refraction wave is advanced here, by which the static corrections are estimated interactively in common shot, common receiver and common offset domains respectively. Global optimum solution may be obtained by making interactive iteration and statistical analysis of a great deal of data. Real processing results indicate that the method can be used to solve the problem of static correction in complicated area.
Static correction is an important step in processing 3 D seismic data from surface complicated area. A new method for deriving static correction values from first breaks of refraction wave is advanced here, by which the static corrections are estimated interactively in common shot, common receiver and common offset domains respectively. Global optimum solution may be obtained by making interactive iteration and statistical analysis of a great deal of data. Real processing results indicate that the method can be used to solve the problem of static correction in complicated area.
引文
1 Marsden Dave.Static corrections— a review,Part ,Part ,Part .The L eading Edge,1993,12 ( 1,2 ,3) :43～ 49,115～ 12 0 ,2 10～ 2 16
2 李明等 .三维地震勘探低速带静校正系统的研制 .石油物探 ,1994,33( 3) :8～ 19
3 陈广思 .相对折射静校正方法 .石油地球物理勘探 ,1990 ,2 5 ( 4) :40 7～ 42 8
4 王彦春等 .交互迭代静校正方法 .石油物探 ,1998,37( 2 ) :63～ 7
2 李明等 .三维地震勘探低速带静校正系统的研制 .石油物探 ,1994,33( 3) :8～ 19
3 陈广思 .相对折射静校正方法 .石油地球物理勘探 ,1990 ,2 5 ( 4) :40 7～ 42 8
4 王彦春等 .交互迭代静校正方法 .石油物探 ,1998,37( 2 ) :63～ 7
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