Abstract：Complex underground structures in the M work area causes many problems for seismic exploration. For instance, velocity varies dramatically with space-time, SNR is very low, seismic energy attenuates rapidly, and static corrections are rather complicated. In order to obtain accurately real characteristics of formations and structures, we choose proper approaches provided by GeoEast such as weak reflection preservation, SNR improvement, and accurate velocity field building to ensure accurately imaging. Noise removal methods and their parameters for low SNR data should be carefully chosen. When shot points are located from the source line, crooked line prestack migration methods should be adopted to eliminate the false structure problems. Seismic data processing final results show that the GeoEast processing system can greatly improve seismic data SNR.
