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. 17, 1998
Filed:
Mar. 25, 1996
William Mark Richards, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A packer or bridge plug design is revealed that has a lock mechanism involving the interengagement of teeth. The meshing of the teeth holds the set of the sealing elements and slips of the packer or bridge plug. Release is accomplished by an application of weight which, due to relative movement of parts, allows the stress applied to the slips and sealing element to be relieved with the interengaging teeth of the lock mechanism still in place. Upon stress relief as to the slips and sealing elements, further movement cams the locking member in a manner so as to separate the interengagement of the teeth, thus completing the release. The stress-relief mechanism and the lock mechanism are part of a compact assembly which is preferably mounted above the packer or bridge plug for easy access. A pressure equalization technique involves discrete operation of an equalizing sleeve followed by at least one opposed motion before a release sleeve can be tagged for removing the plug.