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:
Aug. 14, 2001
Filed:
Oct. 13, 1999
Donald M. Sawyer, Montgomery, TX (US);
Other;
Abstract
A plug for a wellbore including a plug element adapted to traverse the wellbore and a reservoir coupled to the plug element. The reservoir is hydraulically coupled to an annular space between a wall of the wellbore and an exterior surface of the plug element. The reservoir carries a filler material within. Extrusion of the filler material from the reservoir causes the filler material to fill the annular space so as to bind the plug element within the wall of the wellbore. One embodiment of the plug an anti-rotation element coupled to the plug element. The plug element can be coupled to drill pipe by opposite-hand thread whereby engagement of the anti-rotation element enables decoupling of the plug from the drill pipe by normal-direction rotation of the drill pipe.