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Geogiga PS Log 8.0 — Well Velocity Survey Software

PS LOG is designed to efficiently process data in well velocity surveys. After the depth of receivers and the direction of a shot are defined, first breaks can be picked with the mouse button on P and S waves simultaneously in the analysis window. Meanwhile, the interval velocity, average velocity, and Poisson's ratio are automatically updated.


  • Quickly define the geometry with layout chart
  • Butterworth and Ormsby filters with band pass, low pass, high pass, band reject, and notch options
  • Automatic gain control (AGC), trace balance, time variant scaling, and single trace scaling
  • Undo and redo multi-step processing on seismic data
  • Simultaneously display P and S waves at all depths
  • Interactively pick the first breaks of P and S waves with a trace magnifier
  • Automatically calculate interval velocity, average velocity, and Poisson's ratio
  • Manually assign layers based on regression lines
  • Calculate the Elastic Modulus including Shear Modulus, Young's Modulus, and Bulk Modulus
  • Output results in a table