Patent ID: 7433265

Claim:
A method of processing seismic data detected by a vertical geophone sensor, said method comprising the steps of: a. providing original seismic signal data comprised of a P-wave primary reflection signal component, random noise, and at least one converted wave noise energy component; b. modeling the P-wave primary reflection signal in common midpoint gathers to enhance flat lying events of the P-wave signal in the x-t domain; c. applying normal moveout to the original seismic signal data utilizing the modeled P-wave primary reflection signal; d. removing the modeled P-wave primary reflection signal from the original seismic data to yield a transitory signal which includes converted wave noise energy; e. sorting the results of step d into common receiver order; f. utilizing the transitory signal to model the converted wave noise energy to enhance flat lying events of the converted wave noise energy in the x-t domain in common receiver gathers; g. subtracting the modeled converted wave noise energy from the original seismic data.