supported by the National Hi-Tech Research and Development Program of China (Grant No.2006AA09A102-11);the National Natural Science Fund of China (Grant No.40730424 and 40674064)
The imaging of offset VSP data in local phase space can improve the image of the subsurface structure near the well.In this paper,we present a migration scheme for imaging VSP data in a local phase space,which uses th...
supported by the National 863 Program of China (Grant No.2006A09A102-11);National Natural Science Foundation of China (Grant No.40730424);Important National Science & Technology Specific Projects (Grant No.2008ZX05023-005)
In this paper,we image the subsurface reflectors by interferometric imaging using primary and downgoing first-order free-surface related multiple reflections in walkaway VSP data.By analyzing the stack fold distributi...