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:
Nov. 22, 2011
Filed:
Apr. 17, 2009
Alexei Bolshakov, Pearland, TX (US);
Edward J. Domangue, Houston, TX (US);
Douglas J. Patterson, Spring, TX (US);
Joseph G. Barolak, Spring, TX (US);
Alexei Bolshakov, Pearland, TX (US);
Edward J. Domangue, Houston, TX (US);
Douglas J. Patterson, Spring, TX (US);
Joseph G. Barolak, Spring, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
Evaluating casing thickness by inducing SH0 and SH1 modes of a shear wave in the casing. The SH0 group velocity and SH1 mode group velocity (Vg) are measured and the measured SH0 mode group velocity is assigned as the tubular material shear velocity (Vs). A shear wave wavelength λ from the ratio of SH0 mode frequency (f) and the measured SH0 group velocity is estimated. The tubular thickness (d) is estimated from the estimated shear wave wavelength λ. The transmitter can be calibrated to operate at an optimum frequency.