Processing Methods of NMO Correction and Stack in Deviated 3D-VSP
- 责任者：Su Yuanyuan (State Key Lab. of Oil and Gas Reservoir Geology and Exploration ; College of Information Engineering ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Li Luming
- 刊名：Computing Techniques for Geophysical and Geochemical Exploration
- 出版年：2010
- 卷期：32(2)
- 关键词：垂直地震剖面 ; vertical seismic profiles
- 页码：p.132-137
- 图表：9 illus., 8 refs.
- 分类号：1500
- issnNo：ISSN1001-1749
- isbnNo：CN51-1242/P
///Aimed at the 3D-VSP imaging of target formations, this paper has conducted research and summary in the point of reflection spot computation, gather sorting, NMO correction and stack. The authors calculated the position of reflection spot by means of the equivalent continual velocity model curved ray algorithm, obtained common-reflection point-gather on binning, and carried on NMO correction. The authors used the method of scanning to calculate the correct two-way vertical travel time, and stacked with changed fold number, then obtained the superimposed profile. Finally they processed the deviated 3D-VSP theory record which was obtained by ray tracing scheme, and proved the validity of this method.