Patent ID: 6987706

Claim:
A method of processing seismic data to remove unwanted noise from meaningful reflection signals indicative of subsurface formations, comprising the steps of: (a) obtaining field records of seismic data detected at a number of seismic receivers in an area of interest, said seismic data comprising signal amplitude data recorded over time and containing both primary reflection signals and unwanted noise events; (b) assembling said seismic data into common geometry gathers in an offset-time domain; (c) transforming said assembled amplitude data from the offset-time domain to the time-slowness domain using a Radon transformation according to an index j of the slowness set and a sampling variable p; wherein j = p max - p min + 1 ⁢ ⁢ μ ⁢ ⁢ sec ⁢ / ⁢ m Δ ⁢ ⁢ p , p is from about 0.5 to about 4.0 μsec/m, p max is a predetermined maximum slowness, and p min is a predetermined minimum slowness; (d) applying a corrective filter to enhance the primary reflection signal content of said transformed data and to eliminate unwanted noise events; and (e) inverse transforming said enhanced signal content from the time-slowness domain back to the offset-time domain using an inverse Radon transformation, thereby restoring the signal amplitude data for said enhanced signal content.