STUDY OF SEISMIC STACK VELOCITY EXTRACTION TECHNOLOGY FOR LOW SNR DATA

This paper mainly deals with the technique to precisely extract stacking velocity for low SNR seismic data. At first, the LIFT for pre-stack multi-domain de-noises technology and the common reflection surface stack technology were introduced, to improve the SNR seismic data. Then, a new method of continuous velocity analysis based on e phase correlation was presented to improve the precision of the extraction of stack velocity. Finally, a set of methods for accurate extraction of seismic velocity under the low SNR condition was summarized.