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:
Feb. 23, 1999
Filed:
May. 12, 1997
Applicant:
Inventor:
Voldi E Maki, Jr, Austin, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
73579 ; 7315257 ; 7315258 ; 7315259 ; 367 35 ; 181105 ; 702-6 ; 702-8 ;
Abstract
An apparatus and method for using swept frequency energy to inspect a casing or other body is disclosed. A transducer (75) transmits a swept frequency pulse at a casing and receives the reflection resulting from the pulse's impact against the casing. The reflected energy is translated to a reflection signal and analyzed by a signal processor having an envelope detector (240) which translates the reflection signal into an envelope signal. A microprocessor (260) located within the signal processor analyzes the envelope signal to compute data such as the thickness of the casing and the quality of the cement bond holding the casing.