Abstract:

In field seismic data, some heavy relative interference always exist in them. They decrease the SNR of seismic sections and interfere with interpretation. In order to remove relative interference and improve the SNR of seismic data, this paper presents an automatic tracing SVD method to pre-stack removing heavy relative interference. This approach combines automatic-tracing theory with SVD method together. Through tracing relative interference, it uses the small window technique to recover interference signal and obtain effective signal by subtracting noises from the field data. The result shows that the method can eliminate relative interference effectively and enhance the SNR of seismic data.

Key words: seismic data, relative interference, automatic tracing, SVD, small window technique