Abstract：Both concept and algorithm of vector can be easy used to quantitatively de- scribe seismic signal correlation,noise and lithologic characteristic.A seismic trace vector consists of correlative component and uncorrelated component;the former re- flects similar continuity of seismic signals,and the latter contains influence resulting from noises and lithology.Noise component has no inclination characteristic,but both correlative component and lithologic component have;so inclination character- istic can be used to remove noise component but retain lithologic component.There- fore,this vector noise elimination is called signal-retained noise elimination. In solution,inclination micro element is used to extract lithologic component and to remove noise component effectively.Consequently,we have developed some methods for signal retained noise elimination,which are for random noise elimina- tion,regular noise elimination and signal enhancement,these methods play key role in noise elimination processing of the seismic data from Xinjiang and Sichuan areas. They bring good results.
