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:
Apr. 14, 2009
Filed:
Jan. 19, 2007
Applicants:
Stian Hegna, Hovik, NO;
Anthony James Day, Drammen, NO;
Gregory Ernest Parkes, Corsham, GB;
Inventors:
Assignee:
PGS Geophysical AS, Lysaker, NO;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01V 1/02 (2006.01); G01V 1/137 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for determining a fault in a seismic air gun includes comparing a near field seismic signal measured during operation of the air gun to a reference near field signal and determining the existence of a fault in the air gun when a difference between the measured near field signal and the reference near field signal exceeds a selected threshold.