Kirchhoff Prestack Depth and Time Migration
The most widely used migration algorithm in the industry
Accommodate a range of geological settings and acquisition geometries with flexible, amplitude-preserving implementation.
Interactive Velocity Analysis and QC
Rapid velocity analysis and advanced geostatistical velocity QC
Scale to time-domain projects of any size
Interactive velocity analysis (InVA) provides a full-featured interactive velocity analysis package for time-domain projects of any size. Our InVA solution includes
- conventional semblance
- gather and ministack analysis
- semiautomatic Toldi inversion picking
- extensive QC and mapping tools.
An integrated and interactive suite of velocity, anisotropy, and QC analysis tools for imaging in the time domain.
The latest version offers an updated traveltime generator to enable full ray-traced anisotropic moveout correction of gather displays. This provides consistency between moveout corrections in InVA and our proprietary Kirchhoff prestack time migration.
InVA also incorporates the ability to define spatially variant stacking mutes while picking velocities. This capability coupled with the high-order dual-parameter velocity picking and fully ray-traced anisotropic moveout means that a more precise spatially variant mute can be defined both quickly and easily.
Features of WesternGeco InVA
- Manual and automatic picking modes
- Semblance, gather, and ministack views
- Interactive velocity conditioning tools
- Efficient stack verification
- Angle mute overlays
- Full range of QC options and overlays
- Broad portfolio of high-order and anisotropic moveout algorithms
- Horizon-based options
- Vertical or time slice contour/post options
- Binning gamma analysis for PS data
- Multiple prediction to guide velocity trends
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