Velocity analysis. NMO. Kinematical filters.

Kinematical processing:

  • Wave field analysis along the specified seismic event;
  • Horizon-consistent and vertical velocity spectrum computation;
  • Stack computation for the specified area on seismiс section;
  • CDP supergather calculation for every point Хcdp on the profile;
  • Spectra and stack comparison option;
  • The offset range changing for the next computations;
  • Display of the CDP gather, related to the current point of the profile with NMO correction applied;
  • The particular NMO correction (unregularities on different offset can be taken into account).

Kinematical filtering

  • Fan filtering algorithms: (x-t) domain, (x-w) domain and (k-w).
  • Adaptive kinematical filters – the filters, which are able to analyze the wave field in every point for signal and noise identification.
  • Adaptive filter-mask – is a kinematical filter that analyzes the noise model and makes decision about the coherent noise presence or absence in every data point.
  • Filtering stack data and migrated data in common-offset domain.
  • • Polarization filtering - is the separation of multi channel CSP data to the gathers, which are collect the P-wave and S-wave.
Example of vertical velocity spectrum.
Example of vertical velocity spectrum.
Example of horizon-consistent velocity spectrum and its tying between the set of  profiles.
Example of horizon-consistent velocity spectrum and its tying between the set of profiles.