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:
Sep. 04, 1990
Filed:
Oct. 19, 1989
Richard J Ross, Houston, TX (US);
Jim H Roddy, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An apparatus for setting and retrieving a bridge plug of the type which may be passed through a small diameter tubing, and may be sealed against a relatively large diameter casing by pressured fluid to inflate an elastomeric packing element carried by the bridge plug. The running tool is engagable with a valve housing by a J-slot connection and an axially shiftable, pressure balanced valve plug cooperates with the valve housing to open or close the fluid passageway therethrough extending to the inflatable elastomeric packing element. Upward movement of the running tool followed by left hand rotation effects the closing movement of the valve plug and the disengagement of the running tool. Downward movement of the running tool, while engaged with the valve housing, effects an opening of the plug valve.