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. 30, 1982
Filed:
Jul. 03, 1980
Applicant:
Inventors:
Henry L Restarick, Jefferson Parish, LA (US);
John R Setterberg, Jr, Dallas County, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
1661175 ; 166240 ; 294 8613 ;
Abstract
A device for guiding the lower end of a pipe string, or the like, past an upwardly facing shoulder in a well in which rotation of the pipe string is prohibited. When the guiding device lodges on such shoulder, the pipe string is lifted and lowered a few times, this reciprocating action actuating an indexing mechanism in the guide tool and causing the lower end of the guide tool to rotate so that a slanted guide surface thereon is brought around to the point of lodging to dislodge the guide tool from the shoulder and guide the pipe string therepast.