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Planned seismic imaging using explicit one-way operators
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DOI：10.1190/1.2073885.png)
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A method is presented to compare the accuracy and computational cost of explicit one-way extrapolation operators as used in seismic imaging. For a given model, accuracy is measured in terms of lateral positioning error, and cost is calculated relative to the cost of the spatial fast Fourier transform. The result is a planned imaging scheme that achieves the greatest accuracy with respect to the velocity model for a fixed cost. To demonstrate, we use a 2D section of the EAGE/ SEG salt model and assemble a suite of the most common operators. The data are imaged using each operator individually, and the results are compared to the result from the plan-based algorithm. The planned image is shown to return improved accuracy for no additional cost.
Keyword:
FINITE-DIFFERENCE MIGRATION
PHASE-SHIFT METHOD
EXTRAPOLATION
PROPAGATION
EQUATION
MEDIA
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3.2
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