Simulating surface seismic records from VSP （模拟表面垂直地震剖面的地震记录）.pdfVIP

Simulating surface seismic records from VSP data: a 3D test * Yue Du , University of Houston; Mark E. Willis, Halliburton; and Robert R. Stewart, University of Houston Summary as follows: It is possible to transform a walkaway Vertical Seismic G(B |A)   kG(x |A)G(x |B )dx (1) Profile (VSP) to simulate a set of surface seismic shot Swell records by convolving and summing together the where B is the desired simulated surface shot location appropriate sets of VSP records. This method is strictly (shown as blue star in Figure 1), A is the simulated surface formulated for a 2D medium, meaning that the surface receiver on the right side of the well (shown as the other sources and borehole geophones are all contained in a blue star), and G(B|A) is Green’s function solving the 2D single vertical plane, and that the velocity model only Helmholtz equation from the source at B to the receiver at varies in the same 2D plane. We test the limits of the A, which simulate the surface seismic data. Also, in method by examining what happens when we use data from Equation 1, k is a parameter, related to the medium velocity both a 2D slice from a 3D model and the full 3D model . near the geophone, x is one of the receivers in the borehole, G(x|B) or G(x|A) is the Green’s function from source at B Introduction