--> Abstract: Slant-Wave Stack, by Jon F. Claerbout, Philip S. Schultz, Raul Estevez; #90976 (1976).
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Abstract: Slant-Previous HitWaveNext Hit Stack

Jon F. Claerbout, Philip S. Schultz, Raul Estevez

If all shots were fired at the same time, the downgoing Previous HitwaveNext Hit would be a plane Previous HitwaveNext Hit. The upcoming Previous HitwaveNext Hit could be synthesized from conventional data by summing, with zero moveout, all shots into each geophone. Data generated by a downgoing plane Previous HitwaveNext Hit at some nonvertical angle likewise is synthesized, using a moveout function which is linear with offset. Seismic sections thus generated, called slant-Previous HitwaveNext Hit stacks, may be analyzed rigorously with the Previous HitwaveNext Hit equation in contrast to common-midpoint stacked sections. Theoretically, we expect slant-Previous HitwaveNext Hit stacks to yield velocity analysis which is less sensitive to multiple reflections than conventional velocity analysis, while providing a framework to handle problems involving lateral velocity variations within a cable spread, migratio before both velocity analysis and final stack, and diffracted deep-water multiple reflections. Theoretically, we expect slant-Previous HitwaveNext Hit stacks to have lower signal-to-noise ratios than common-midpoint stacks but higher than single-offset sections. Experimentally we have found that the slant-Previous HitwaveTop stack often provides sharper definition than the common-midpoint stack.

AAPG Search and Discovery Article #90976©1976 AAPG-SEPM-SEG Pacific Section Meeting, San Francisco, California