Gaussian packet migration (GPM) is available for licensing as an addition to Omega seismic data processing software. It is a fast and accurate prestack depth migration algorithm that has no dip limitation and correctly handles multiarrivals. The GPM algorithm supports near-azimuth (NAZ) and wide-azimuth (WAZ) acquisition, isotropic and anisotropic (VTI and TTI) models, and images using true Gaussian beams rather than an approximation, thereby honoring wave propagation physics. GPM resolves steep dips very well and retains resolution and imaging definition because of the inherent high-frequency capability of the method.

Model and image iteration

GPM also provides the core of fast-modeling and image-iteration capabilities—the Gaussian packets or diplets are representations of the seismic data and contain all information pertaining to the seismic data. This information includes spatial location (x, y, z), spatial orientation (inline dip and crossline dip), amplitude, wavelet, coherency, acquisition configuration (acquisition offset and acquisition azimuth), reflection configuration (reflection angle and reflection azimuth), and other derived attributes.

Remigration of these Gaussian packets enables localized remigration, allowing GPM to be used in rapid-velocity modeling and seismic-guided drilling, where fast migration turnaround time is essential. 

Applications

  • Imaging high-resolution steep dip images in complex environments
  • Imaging below salt targets where stratigraphic resolution is key
  • Rapid remigration for interactive velocity modeling and seismic-guided drilling

Features

  • Supports isotropic and anisotropic (VTI and TTI) velocity.
  • Provides accurate solution to acoustic wave equation.
  • Handles amplitudes and wavefront curvature through dynamic ray tracing.
  • Allows for interactive rapid prestack depth migration through localization in space and time
  • Outputs common image point and angle gathers
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