Abstract: VSP observation system is different from surface seismic prospecting, including geophone arrangement and wave field feature, etc. Split-step Fourier method is used to extrapolate wave field and stack observational wave field at every extrapolation step, by which the integrated imaging of VSP with surface seismic data is gained. The wave fields given by different observation systems can compensate each other in the process of imaging, thus improving the quality of imaging. The theoretical models show that integration of VSP with surface seismic data can make more precise imaging of studied strata.

Key words: VSP, integrated imaging, stacking, split-step Forrier method