3D seismic data can be regularized in a five-dimensional space, with four spatial coordinates (for example midpoint-x, midpoint-y, offset and azimuth) and time. PGS can regularize 3D pre-stack data using the exact locations of the input data.
- Amplitude preserving protection of all frequencies: regularization weights derived from lower, unaliased frequencies are used to unwrap spatially aliased higher frequencies
- Data can be output to any user-specified location
- Regularized data improves migration quality by removing imaging swing noise.
A proprietary anti-leakage Fourier transform (ALFT) reconstructs irregularly sampled input data in the Fourier domain, and then uses an inverse transform to produce regularized data at new locations.
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