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Book Chapter

Prestack Modelling

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Published:
January 01, 2007

Abstract

Know that the incident and reflected rays follow different paths, but maintain equal angles of incidence and reflection.

Define and become familiar with the various ways of displaying prestack data such as source gathers, constant offset sections, or CMP gathers in the prestack volume (x, h, t).

Construct a source gather and a constant offset section.

Know that conventional stacking is only valid for horizontal reflectors.

Become aware that care must be taken when forming limited-offset stacks from a range of offsets to create a constant-offset section.

Know that diffractions don’t stack.

A scatterpoint forms a surface in the prestack volume (x, h, t) which is referred to as Cheops pyramid.

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Course Notes

A Practical Understanding of Pre- and Poststack Migrations: Volume 2 (Prestack)

John C. Bancroft, Ph.D.
John C. Bancroft, Ph.D.
University of Calgary
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Society of Exploration Geophysicists
Volume
14
ISBN electronic:
9781560801658
Publication date:
January 01, 2007

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