摘要
在地震资料处理中,一般采用折射波静校正方法消除风化层和低、降速层的影响,该类方法可同时解决高频和低频的静校正问题。但常规折射波静校正计算方法通常是每条线孤立地计算各自的校正量,很容易造成静校正量的不闭合。针对这一问题,本文通过分析单线孤立算法各线交点处参与计算的近地表模型参数。找到了一种伪三维结合延迟时法来计算二维资料折射波静校正量的方法。本文从理论上详细解说了伪三维延迟时法折射波静校正方法,并通过实例应用效果说明此方法是可行而有效的。
In seismic data processing,the refraction static corrections are generally used to eliminate the influence of weathered and sub-weathered zones and also are used to solve the issue of high-frequency and low-frequency static correction. But the ordinary refraction static corrections generally compute its-own statics for each line individually,which easily resulted in large mis-tie of statics. In accordance with the issue, the paper found using pseudo-3-D plus delay time to compute the refraction static corrections of 2-D data through analyzing the near-surface model's parameters participating the computation at cross points of each line by using isolate single-line algorithm. The paper expounded theoretically in detail the refraction static corrections by pseudo-3-D delay time approach and pointed out by the results of real case application that the approach is feasible and effective.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2007年第B08期51-56,共6页
Oil Geophysical Prospecting
关键词
折射波静校正
伪三维
延迟时
闭合差
近地表模型
refraction static correction,pseudo 3-D, delay time, mis-tie, near surface model, Green-mountain sortware
