Aimed at the 3D-VSP imaging of target formations, this article has conducted research and summary in the point of reflection spot computation、gather sorting、NMO correction and stack. The author calculated the position of reflection spot by means of the equivalent continual velocity model curved ray algorithm, obtains common-reflection point-gather on binning, then carries on NMO correction,the author used the method of scanning to calculate the correct two-way vertical travel time, and stacks with changed fold number, then obtains the superimposed profile. Finally the author processed the deviated 3D-VSP theory record which was obtained by ray tracing scheme, and proved the validity of this method.
imaging of VSPreflection spot computation of VSPNMO correction of VSPdeviated 3D-VSP
国家科技期刊平台
NSTL
万方数据
维普
