Application of Wave Equation Prestack τ Migration on Yongan 3D Seismic Data of Northern Jiangsu Basin
详细信息
- 责任者：Chen Xifeng (Geophysical Prospecting Technology Research Institute ; Jiangsu Oilfield Subsidiary Company ; SINOPEC ; Nanjing 210046 ; China) ; Wang Yong
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2010
- 卷期：49(3)
- 关键词：叠前偏移 ; prestack migration ; 苏北盆地 ; Subei Basin
- 页码：p.253-256,267
- 图表：illus., 13 refs.
- 分类号：1600
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
In this paper, Double-square-root（DSR）one-way wave equation prestackτmigration was introduced. The method requires zero-azimuth seismic data, so azimuth moveout correction and offset regularization is need. Aiming at the characteristics of narrow-azimuth 3Dseismic data in the area, the authors proposed a workflow including DMO correction, offset regularization and DMO-1 correction. Both Kircohoff prestack migration and the prestackτmigration combined with above workflow were applied to Yongan 3D data. Result shows that the latter method can improve the continuity of reflection events between igneous rocks, make the fault and fault section clearer, and increase imaging resolution. Meanwhile, the two methods cost almost the same time, which proved the feasibility of the latter method proposed here.