A pseudo-random 3D seismic geometry generation method

Summary The bin with completely uniform distribution in full azimuth will generate higher S/N ratio and resolution in reservoir prediction, reservoir characterization, crack detection and lithology analysis, and shows more dominant advantages. So with the further seismic exploration and seismic equipment development, the 3D seismic acquisition with high density and wide (full) azimuth has been being used more and more widely. According to the analyses, it is thought that sea tow-cable seismic exploration has achieved full azimuth with same and uniform offset distribution in each direction through coil geometry. Although smaller and smaller point interval and line spacing with symmetric sample design has been applied on land to get the similar offset distributions in bins to coil acquisition of sea tow-cable seismic, the result is obviously unsatisfying. The previous studies show that, the random geometry can achieve a bin with a completely uniform offset distribution in full azimuth in the real world use, however there isn’t a good example available yet. This paper gives a 3D seismic geometry generation method, which nearly achieve the real meaning uniform offset in full azimuth mentioned above, and is realizable at the same time. Because the receiver and source distribution looks random, so the geometry generation method is called pseudo 3D geometry.