What is Wide Azimuth (WAZ)?
Conventional 3D marine acquisition records a limited subset of the reflected wavefield because of its narrow range of source-receiver azimuths. This method of recording just a small percentage of the total wavefield provides limited illumination and resolution. On the other hand, land and seabed acquisition have sometimes used wide-azimuth geometries but only at the expense of large spacing of either shots or receivers, or both. This coarse sampling can lead to an aliased representation of the wavefield and hence noisy and misleading images of the earth. To achieve an optimum image of the sub-surface, we need both wide-azimuth recording and sufficiently dense sampling to obtain a full representation of the seismic wavefield. In the marine environment, CGGVeritas’ Wide Azimuth (WAZ) recording provides this by using a wide array of receivers for every shotpoint; for land and seabed surveys, our technology provides dense shotpoint sampling designed to sample the wavefield adequately. A go
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- What is Wide Azimuth (WAZ)?
