True-amplitude single-stack redatuming

Author(s)

Pila, Matheus F. ^[1] ; Schleicher, Joerg ^[2] ; Novais, Amelia ^[2] ; Coimbra, Tiago A. ^[2]

Affiliation

^[1] PGS Invest Petrolifera Ltda, BR-22775044 Rio De Janeiro, RJ - Brazil

^[2] Univ Estadual Campinas, UNICAMP, Inst Math Stat & Sci Comp IMECC, Dept Appl Math DMA, BR-13083859 Campinas, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF APPLIED GEOPHYSICS; v. 105, p. 95-111, JUN 2014.
• Web of Science Citations: 6

Abstract

Based on the chaining of diffraction-stack migration and isochron-stack demigration, we derive a general true-amplitude Kirchhoff-type single-stack operator for 3D and 2.5D redatuming. It consists of performing a single weighted stack along adequately chosen stacking surfaces or lines. The corresponding traveltimes and weight functions can be calculated using quantities obtained from dynamic ray tracing. The operator simplifies when specified for zero-offset data. For simple types of media, we derive analytic expressions for the stacking lines and weight functions and demonstrate their functionality with numerical examples. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 05/00305-0 - Kirchhoff migration incorporating Kirchhoff redatuming
• Grantee: Matheus Fabiano Pila
• Support Opportunities: Scholarships in Brazil - Doctorate