Page 15 - Acquisition and Processing of Marine Seismic Data
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6 1. INTRODUCTION
FIG. 1.4 Run times in seconds for different processing steps for the same 2D dataset. Note that the vertical axis is set to
logarithmic so that the small rendering times of some particular steps also become evident. AGC, automatic gain control;
NMO, normal moveout correction; TVSW, time variant spectral whitening; TVF, time variant filter; SRME, surface related
multiple elimination; DMO, dip moveout.
stacking. The most costly processes are the pre- • SeisSpace/Promax (#Landmark)
stack migration algorithms. • Geovation, previously Geovecteur (#CGG
Today, several sophisticated commercial soft- Veritas)
ware packages exist in the market. In addition to • GeoThrust (#GeoTomo LLC)
the dedicated private software developers, most • Globe Claritas (#GNS Science)
of the seismic survey companies also develop • RadExPro (#DECO Geophysical)
their own seismic processing software. The most • Vista (#Gedco)
distinguished software suites commercially • Seismic Processing Workshop (SPW)
available today, especially for the petroleum (#Parallel Geoscience)
industry, are:
Apart from the commercial software listed
• Omega (#Western Geco) here, a couple of freeware processing codes
• Echos, previously Disco Focus (#Paradigm) are also available, generally used by academia:
