| US 7,508,733 B2 | ||
| High-frequency processing of seismic vibrator data | ||
| Jakob B. U. Haldorsen, Norwalk, Conn. (US) | ||
| Assigned to Schlumberger Technology Corporation, Ridgefield, Conn. (US) | ||
| Filed on Nov. 12, 2004, as Appl. No. 10/987,907. | ||
| Claims priority of provisional application 60/520175, filed on Nov. 14, 2003. | ||
| Prior Publication US 2005/0122840 A1, Jun. 09, 2005 | ||
| Int. Cl. G01V 1/36 (2006.01); G01V 1/37 (2006.01) | ||
| U.S. Cl. 367—41 [367/40; 367/42; 367/189] | 18 Claims |
| 1. A method of processing seismic data obtained using a seismic vibrator, comprising:
estimating travel times of direct wave arrivals between said seismic vibrator and an array of seismic receiver locations using
correlated seismic data; and
wavefield deconvolving uncorrelated seismic data using said estimated direct wave arrival travel times;
wherein said deconvolved seismic data is used to recover the total useable bandwidth of the seismic data obtained using a
seismic vibrator whereby the total useable bandwidth is determined using the semblance of the wavefield deconvolution process
and the uncorrelated seismic data is used to extract a down-going wave field, wherein components of the down-going wave field
associated with harmonic distortion are accounted for and thereby become part of the total bandwidth of the processed seismic
data.
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