Adaptive beam migration (ABM) is a depth-migration implementation that is based on Gaussian technology and is available for licensing as an addition to Omega seismic data processing software. ABM provides advanced, full-beam migration for situations needing outstanding image quality and high interpretation confidence.

ABM is a flexible, targetable migration that combines many of the features associated with ray-based and wave-equation migrations. It is fully anisotropic, handling both vertical transverse isotropy (VTI) and tilted transverse isotropy (TTI).

The migration relies on localized slant stacks of seismic data to separate the data into directional components. Each of these is then propagated into the subsurface using a localized asymptotic solution (LAS) of the acoustic wave equation, produced around an individual ray traced into the subsurface. Superposition of these solutions with an appropriate true-amplitude imaging condition produces the final image.

The migration is targetable and is inherently multiarrival, using amplitude and phase information obtained from ray tracing to produce the image. Additionally, unlike wavefield extrapolation migrations, beam migration has no inherent dip limit and is suitable for imaging steep-dip and overturned structures.

Applications

  • Final imaging of steep dips, overturned structures, basement imaging, and deepwater targets.
  • Model building in scenarios where high-definition images are needed.

Adaptive beam migration (ABM) is a depth-migration implementation that is based on Gaussian technology and is available for licensing as an addition to Omega seismic data processing software. ABM provides advanced, full-beam migration for situations needing outstanding image quality and high interpretation confidence.

ABM is a flexible, targetable migration that combines many of the features associated with ray-based and wave-equation migrations. It is fully anisotropic, handling both vertical transverse isotropy (VTI) and tilted transverse isotropy (TTI).

The migration relies on localized slant stacks of seismic data to separate the data into directional components. Each of these is then propagated into the subsurface using a localized asymptotic solution (LAS) of the acoustic wave equation, produced around an individual ray traced into the subsurface. Superposition of these solutions with an appropriate true-amplitude imaging condition produces the final image.

The migration is targetable and is inherently multiarrival, using amplitude and phase information obtained from ray tracing to produce the image. Additionally, unlike wavefield extrapolation migrations, beam migration has no inherent dip limit and is suitable for imaging steep-dip and overturned structures. 

Features

  • Multiarrival, high-quality final imaging.
  • Beam migration with no dip limitations.
  • Support of isotropic and anisotropic (VTI and TTI) velocity models.
  • Powerful internal noise-suppression techniques that enhance primary events for greater interpretation clarity.
  • Amplitude preserving with full gather output.
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