F-K域抗假频道内插

Using anti-alias trace interpolation in F-K domain

1. 石油地球物理勘探局研究院地质中心,涿州072751;2. 中原石油勘探开发局,濮阳457001

Center of Geology, Geophysical Research Institute, Bureau of Oil Geophysical Prospecting, Zhuozhou 072751

地震数据空间假频会对地震数据的处理和成象造成不利的影响。为了消除其影响,需要进行道内插,特别是VSP和井间地震反射波具有陡斜率的特点,因此,道内插去假频显得尤为重要。我们采用了F-K域抗假频道内插。F-K域道内插具有速度快、效率高的特点。

The quality of processing and imaging for seismic data is impaired by the space aliasing present in the seismic data. To eliminate their impacts, it is necessary to carry out anti alias trace interpolation, especially for the reflected waves from VSP and cross hole seismic, because they are of steep slope, we use the anti alias trace interpolation in F-K domain. Trace interpolation in F-K domain is fast and efficient. The F-K domain interpolation algorithm for aliasing linear seismic events is presented in the paper. Verification with theoretical and real data indicates that the method is applicable.