1887
Volume 41, Issue 9
  • ISSN: 0263-5046
  • E-ISSN: 1365-2397

Abstract

Abstract

Distributed acoustic sensing (DAS) data recording a large amount of the subsurface information become more promising for real-time seismic monitoring. Therefore, fast and accurate imaging techniques are required to handle large datasets. Besides the issue of the computation cost, most of the migration methods, such as reverse-time migration (RTM) and Kirchhoff migration suffer from the artifacts, influencing the quality of the image, because of the limited-aperture data. Here, we perform a migration, based upon the Fresnel volume on the simulated geophone VSP and DAS VSP acquired by newly developed fibre-optic cables in Canada. We show that the Fresnel volume migration with a competitive runtime is superior and robust compared to the RTM and Kirchhoff migration. The angle-domain common-image gathers (ADCIGs) extracted from the Fresnel volume migration is more reliable and cleaner than that of the conventional Kirchhoff migration, used further for the AVO analysis and inversion.

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2023-09-01
2026-02-11
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