Abstract
Seismic interferometry is a new field in seismology that is finding many useful applications in exploration geophysics (Rickett and Claerbout, 1999; Schuster, 2001; Yu and Schuster, 2006; Wapenaar et al., 2002; Wapenaar, 2004; Wapenaar et al., 2005; Calvert et al., 2004 and others) Analogous to optical interferometry, seismic interferometry estimates the detailed properties of an elastic medium by analyzing the interference patterns of seismic waves. The interference patterns are constructed by correlation and summation of seismic traces to robustly image the earth's elastic properties. In this paper we discuss some key benefits and liabilities of seismic interferometry applied to both CDP and VSP data. Both synthetic and field data examples are used to illustrate some key benefits: wider subsurface illumination, better spatial resolution, source statics elimination, data interpolation, and redatuming of receivers and/or sources to be closer to the target. The chief drawback of seismic interferometry is the coherent artifacts associated with unphysical events in the correlograms, known as either virtual multiples or crosstalk.
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