Prestack Depth Migration
2D/3D Kirchhoff Prestack
DEPTH Migration Software
PSDM is a Kirchhoff based prestack depth migration. It runs using travel time files generated by Raytracer, a wavefront reconstruction travel time generator. The migration will image beyond ninety degrees, which will allow the use of turning waves to image salt overhangs.
PSDM can image from a fixed datum or a floating datum/topography as your project requires. With PSDM you have complete control of the output you can generate. You can select the inlines and crosslines you wish to output and the offset ranges and increments.
You have the ability to specify the migration aperture as a function of depth, and the output frequency as a function of depth. These specifications can greatly reduce the runtime of the jobs, and it tells the software what dips and frequencies are really needed by your particular job.
The Tsunami depth migration includes a paraxial ray tracer and a high performance Eikonal travel time solver. The travel time tables are created as a separate job and are then used by the PSDM module as well as the tomography module. While the ray tracer uses the advanced wave front reconstruction method, its performance is that of other vendors Eikonal solvers.
Time and Depth Migrations
• Amplitude preserving
• Adjustable three-point anti-alias filter
• Capable of imaging beyond 90 degrees
• User can define aperture as a function of time/depth
• Aperture function can vary with inline or crossline
• Sophisticated trace weighting to compensate for irregular acquisition
• Can automatically match the shape of the output area to the input area saving run time when imaging irregular land surveys
• User can adjust output frequency as a function of time/depth to improve performance.
• User can select traces to migrate based on azimuth of source/receiver locations
• Input data can be sorted in any order
• Reads FOCUS® and SeisUP® formats as well as SEGY data formats
• Reads SEGY velocity files
Texas Gulf Coast Salt Dome
