Seismic vibrator signature deconvolution
AssigneeExxon Production Research Company
InventorEugene C. Trantham
Life of this patent
Estimating the term…
Abstract
A method for processing seismic vibrator data. The method utilizes a deterministic signature deconvolution of the vibrator data to compress the impulse response of the data resulting in sharper, clearer seismic images than are possible using cross-correlation techniques. The method may be used in place of or in addition to cross-correlation. Further, the method may be implemented in either the time domain or the frequency domain.
Claims20
A method for processing seismic data generated by a seismic vibrator, said method comprising the steps of:
- (a) selecting a desired impulse response for said seismic data;
- (b) selecting a pilot signal for said seismic vibrator and using said pilot signal to determine the signature for said seismic data;
- (c) using said desired impulse response and said signature to design a deconvolution filter;
- and
- (d) performing a deterministic deconvolution of said seismic data using said deconvolution filter.
A method for processing uncorrelated seismic data generated by a seismic vibrator, said method comprising the steps of:
- (a) selecting a desired impulse response for said seismic data;
- (b) selecting the vibrator pilot sweep as the signature for said seismic data;
- (c) using said desired impulse response and said vibrator pilot sweep to design a deconvolution filter;
- and
- (d) performing a deterministic deconvolution of said uncorrelated seismic data using said deconvolution filter.
A method for processing cross-correlated seismic data generated by a seismic vibrator, said method comprising the steps of:
- (a) selecting a desired impulse response for said seismic data;
- (b) selecting the vibrator pilot sweep as the signature for said seismic data;
- (c) determining the autocorrelation of said vibrator pilot sweep;
- (d) using said desired impulse response and said autocorrelation of said vibrator pilot sweep to design a deconvolution filter;
- and
- (e) performing a deterministic deconvolution of said cross-correlated seismic data using said deconvolution filter.
Dependencies are inferred from the claim text.