基于平面波解构滤波的速度无关动校正及速度分析方法

为了避免速度分析拾取速度参数引起的繁复费时、拾取参数不准确导致的校正效果不佳和传统动校正的拉伸畸变问题,利用速度无关动校正方法进行相关处理。通过数据解构获取局部同相轴斜率,解析斜率数据与速度的关系,由局部斜率可直接获得动校正所需时差参数,其信息足以进行动校正处理。通过模拟和实际数据进行的实验计算,证明此方法优于常规动校正处理效果。

Velocity- independent NMO correction using plane- wave destruction filters and velocity analysis method

In order to avoid the poor correction effect and stretching distortion problem in normal NMO correc- tion caused by the complicated and time- consuming or picking up the inaccuracy parameters conditions in velocity analysis，velocity- independent NMO correction method was introduced for processing． The authors got local event slope through the data destruction，analyzed the relationship between the slope data and velocity，and required the time parameter by local slope data，the information were sufficient for NMO correction． The velocity- independent NMO correction was superior to the normal NMO correction through synthesis data and field data．