Patent ID: 8521434

Claim:
A method of processing seismic data, comprising: receiving from a plurality of seismic receivers in a seismic survey measurements of pressure data and at least one of particle velocity data and particle acceleration data; using a non-transitory computer readable medium containing computer instructions stored therein, for causing a computer processor to perform the following processes: processing pressure gradient data using the measured pressure data and at least one of the measured particle velocity data and the measured particle acceleration data; computing a time-derivative of the measured pressure data by differentiating the measured pressure data; applying a moveout correction function to the time-derivative of the measured pressure data to obtain a corrected time-derivative result; computing a spatial derivative of the moveout correction function; multiplying the corrected time-derivative result and the spatial derivative to obtain a correction factor; applying the moveout correction function to the processed pressure gradient data to obtain moveout pressure gradient data; adding the correction factor and the moveout pressure gradient to obtain moveout corrected pressure gradient data, wherein the moveout corrected pressure gradient data comprises the processed pressure gradient data corrected for moveout; and using the moveout corrected pressure gradient data to process physical properties of the earth's interior.