3D Migration Aperture and Formula Connecting Dips of Prestack Time Migrated and Unmigrated Data

TL;DR

This paper extends previous 2D migration formulas to 3D, deriving a prestack time migration aperture and a formula linking dips of migrated and unmigrated data, considering azimuthal variations.

Contribution

It introduces a novel 3D prestack time migration aperture formula and extends dip connection formulas to three dimensions with azimuthal considerations.

Findings

Derived 3D prestack migration aperture formula

Established dip connection formula considering azimuth

Extended 2D formulas to 3D context

Abstract

Formula connecting dips of unmigrated 2D and prestack time migrated constant offset gathers was recently proposed (Singh, 2024). A handy formula for 2D prestack migration aperture was also derived. We extend the same work to the 3D case, that is, we derive prestack time migration aperture, and formula connecting dips as a function of dip of a planar reflector and azimuth w.r.t. the dip direction.