Impact of Feathering On Imaging For Wide Azimuth Data

Sirgue, Laurent (BP America) | Xia, Ganyuan (BP America)



Wide azimuth towed streamer data yield improved depth migrated images thanks to additional cross-line offset coverage. The range of cross-line offsets required to reach an optimal image quality may be assessed by carrying out synthetic studies. Such numerical experiment typically contains regular sampling of inline and cross-line offsetsand does not reflect realistic field geometry such as streamer cable feathering.

We carried out a synthetic experiment that accounts for theeffect of cable feathering during the acquisition. The results indicate that cable feathering has little impacts on depth imaging, at least for data frequencies up to 12 Hz at which the experiment was carried out.