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One-way wave equation seismic prestack forward modeling with irregular surfaces
Pages: 13-17
Year: Issue:  1

Keyword:  mathematical geophoneequal-time stacking principleseismic prestack forward modelingirregular surfacesand one-way wave-equation;
Abstract: Mathematical geophone (MG) and equal-time stacking (ETS) principles are used to implement seismic prestack forward modeling with irregular surfaces using the oneway acoustic wave-equation. This method receives seismic primary reflections from the subsurface using a set of virtual MGs. The receivers can be located anywhere on an irregular observing surface. Moreover, the ETS method utilizes the one-way acoustic wave equation to easily and quickly image and extrapolate seismic reflection data. The method is illustrated using high single-noise ratio common shot gathers computed by numerical forward modeling of two simple models, one with a flat surface and one with an irregular surface,and a complex normal fault model. A prestack depth migration method for irregular surface topography was used to reproduce the normal fault model with high accuracy.
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