Patent Document ID: 20090112477
Application ID: 12346442
Patent Flag: 0

Claim One:
1. A method for processing seismic data to be used in correcting for errors caused by variation in water conditions, comprising: (a) solving for Δs i based on CMP-bin centered, NMO corrected, dip corrected observed water bottom reflection times, wherein Δs i is an estimate of the difference in slowness between one or more observed water bottom reflection times and one or more water bottom reflection times that would have been observed had a water velocity for the observed water bottom reflection times been the same as a model water velocity; (b) solving for an estimate of observed water velocity based on s obs,i =s m +Δs i , where s obs,i is an estimate of observed slowness and s m is defined as a model slowness; and (c) layer replacing the observed water bottom reflection times using the estimate of the observed water velocity and the model water velocity.