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, 1993
Filed:
Oct. 25, 1991
Applicant:
Inventor:
Gale D Burnett, Lynden, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ;
U.S. Cl.
CPC ...
324534 ; 324527 ; 324532 ;
Abstract
A method of analyzing an electrically conductive member, such as a well casing, where one end of the member is more accessible, and a second end of the member is less accessible. A first electrical pulse is transmitted along the well casing toward a lower end of the well casing, where the first pulse is reflected as a reflected pulse to travel back up the casing. A second pulse is transmitted down through the well casing to intersect with the reflected pulse, after which the reflected pulse is detected and analyzed to determine conditions along the well casing. The timing of the pulses its synchronized so that the point of intersection is stepped along the well casing.