Least-Squares Migration provides images with better balanced illumination, improved signal-to-noise ratio, reduced migration artifacts and more interpretable seismic amplitudes. Implementation of a Least-Squares Q-PSDM sequence corrects for absorption and related illumination effects, mitigating artifacts and noise.
We have successfully applied Least-Squares Migration to datasets from all over the world, including areas of complex geology such as subsalt in the Gulf of Mexico. Least-Squares Migration also brings benefits to challenging time-lapse projects, especially for highly non-repeatable vintages or prospects with weak 4D signal.
On this BroadSeis dataset from our Cornerstone survey in UK Central North Sea, Least-Squares Q-PSDM (bottom image) provides a higher resolution image, along with improved illumination balance, reduced migration swing noise and better event continuity when compared to conventional imaging (top image).
Create accurate seismic images in the most complex of geological environments.
Reveal intricate velocity details for the clearest images. Harness seismic low frequencies from BroadSeis, StagSeis, seabed and land data.
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