中国石油大学学报（自然科学版）2012，Vol.36Issue(2)：76-80,5.DOI:10.3969/j.issn.1673-5005.2012.02.012
利用共偏移距共反射面元叠加提高叠前地震资料质量
Prestack seismic data enhancement with common-offset common-reflection-surface stack
摘要
Abstract
A partial common-offset common-reflectinn-surfaoe (CO CRS) stacking method was developed to enhance the quality of sparse low fold prestack seismic data. A multi-parameter CO CRS traveltime formula was applied to compute partial stacked CRS supergathers, and the data were regularized by filling the gaps in cases of missing traces compared with original CMP gathers. These improved prestack data which can be used in many conventional processing steps including velocity analysis or prestack migration instead of the original data. The model test and practical data processing results show that compared with the image section obtained from the original seismic data, the image section by the application of migration with the prestack data obtained through partial CO CRS stack improves not only the signal-to-noise ratio but also the continuity of reflection event, which has better imaging results.关键词
地球物理勘探/地震资料/共反射面元(CRS)叠加/共偏移距共反射面元(CO CRS)/共反射面元(CRS)超道集/数据规则化Key words
geophysical prospecting/ seismic data/ common-reflection-surface (CRS) stack/common-offset common-reflection-surface (CO CRS) stack/ common-refleclion-surface ( CRS) supergathers/ data regularization分类
天文与地球科学引用本文复制引用
李栋,李振春,孔雪,熊宇,孙小东..利用共偏移距共反射面元叠加提高叠前地震资料质量[J].中国石油大学学报（自然科学版）,2012,36(2):76-80,5.基金项目
国家“973”课题(2007CB209605):国家“863”课题(2009AA06Z206) （2007CB209605）
