In this paper, we deal with the problem of P-P and P-S imaging and velocity analysis using multicomponent geophone data and elastic reverse-time migration. The case of elastic reverse-time migration, and that of elastic imaging in general is more complicated than the acoustic counterparts by the existence of P- and S-wave modes. This requires an imaging condition able to distinguish apart the different scattering events. Another important requirement is the ability to build accurate P-wave (vp) and S-wave (vs) velocity models.

The difficulties associated with obtaining good quality images of P-S reflections results in that, even if multicomponent data is available, it is seldom that the horizontal components are actually used for subsurface imaging, analysis and interpretation. Here, we present imaging conditions capable of imaging P-P and P-S scattering events using all geophone components. The migrated images are then used in an automatic stackpower maximisation procedure to estimate optimal vp and vs migration velocity models. We test the methodology in 2D synthetic and field datasets.


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  1. Bertram, M.B. and Margrave, G.F.
    [2010] Recovery of low frequency data from 10Hz geophones. CREWES Research Report, 22.
    [Google Scholar]
  2. Byrd, R.H., Lu, P., Nocedal, J. and Zhu, C.
    [1995] A limited memory algorithm for bound contrained optimization. SIAM Journal on Scientific Computing, 16(5), 1190–1208.
    [Google Scholar]
  3. Chavent, G.
    [2009] Non-Linear Least Squares for Inverse Problems: Theoretical Foundations and Step-by-Step Guide for Applications. Springer.
    [Google Scholar]
  4. Chavent, G. and Jacewitz, C.A.
    [1995] Determination of background velocities by multiple migration fitting. Geophysics, 60(02), 476–490.
    [Google Scholar]
  5. Dellinger, J. and Etgen, J.
    [1990] Wave-field separation in two-dimensional anisotropic media. Geophysics, 55(7), 914–919.
    [Google Scholar]
  6. Gulati, J.S., Stewart, R.R. and Parkin, J.M.
    [1998] 3C-3D VSP: The Blackfoot experiment. CREWES Research Report, 10.
    [Google Scholar]
  7. Mora, P.
    [1987] Nonlinear two-dimensional elastic inversion of multioffset seismic data. Geophysics, 52(9), 1211–1228.
    [Google Scholar]
  8. Virieux, J.
    [1986] P-SV wave propagation in heterogeneous media; velocity-stress finite-difference method. Geophysics, 51(4), 889–901.
    [Google Scholar]
  9. Weibull, W.W. and Arntsen, B.
    [2014] Anisotropic migration velocity analysis using reverse-time migration. Geophysics, 79(1), R13–R25.
    [Google Scholar]

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