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. 03, 1987
Filed:
Dec. 27, 1985
Applicant:
Inventor:
Robert W Siegfried, Frisco, TX (US);
Assignee:
Atlantic Richfield Co., Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ; G01V / ;
U.S. Cl.
CPC ...
73152 ; 181105 ;
Abstract
An ultrasonic borehole televiewer is modified to provide a vertical array of receiving transducers arranged above and below a conventional transmit/receive transducer. The variation in amplitude of reflected energy detected across this array for each firing of the televiewer is a measure of the extent to which scattered energy is present in addition to specular reflections. This in turn is an index of the relative smoothness or roughness of the borehole surface on a scale comparable to or smaller than the wavelength of the incident energy.