The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2005
Filed:
Jan. 16, 2004
Rainer Moerig, Houston, TX (US);
Frederick J. Barr, Pearland, TX (US);
David Lee Nyland, Palmer, AK (US);
Gary Sitton, Houston, TX (US);
Rainer Moerig, Houston, TX (US);
Frederick J. Barr, Pearland, TX (US);
David Lee Nyland, Palmer, AK (US);
Gary Sitton, Houston, TX (US);
Westerngeco, L.L.C., Houston, TX (US);
Abstract
A method of seismic surveying using one or more vibrational seismic energy sources activated by sweep signals. The highest order harmonic that has sufficient strength to cause significant harmonic distortion of a sweep segment is determined. A number of sweep segments in excess of the number of sources is selected. Initial phase angles are selected for each sweep segment of each seismic energy source so that substantially all harmonics up to and including the highest order harmonic are suppressed. Using cascaded sweeps, seismic data are acquired and processed to substantially attenuate harmonics upto the selected order.