Many plays benefit from prestack depth migration because the velocity model derived during the process is inherently more accurate than that for time processing. Using this velocity model and pre stack time seismic traces as input, prestack depth migration enhances the imaging or focusing of the resulting seismic data by placing reflections in more accurate depth space. As a result, the structure and trap volumetrics are also more accurately revealed and positioned.
The Paradigm® GeoDepth® software package provides 2D and 3D land and marine, ray and wave equation-based, isotropic and anisotropic, model building for accurate simulation of wave propagation in complex subsurface areas. Model refinement includes methods of RMO extraction, constrained velocity inversion, grid and/or horizon based tomography. Well information can also be used in the model updating workflow. A variety of analysis tools provide for model validation and seismic/ray/model overlay visualization. Depth Imaging using GeoDepth® helps reduce drilling risk in subsurface geological structures like fault shadow, subsalt, sub-basalt, salt flanks, reefs, gas plumes, thrust faults and subtle lateral velocity variations.
Available Isotropic and Anisotropic (VTI & TTI) migrations:
- Kirchhoff Summation Migration (KDMIG)
- Wave Equation Migration (WEM)
- Reverse Time Migration (RTM)
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