Conversion point mapping and interpolation in P-S survey design

Donald C. Lawton, Peter W. Cary

Depth-variant mapping of P-S conversion points in 3C-3D survey design shows that conversion points are distributed irregularly at the reflector, resulting in high- frequency (bin-bin) fold variations in P-S fold maps if nearest-neighbour binning is used. This binning artifact can be mitigated through the application of a sinc-function interpolator that provides a more robust measure of fold distribution for band-limited seismic data.