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, 2004
Filed:
Oct. 17, 2001
Applicant:
Inventors:
John M. Yokley, Kingwood, TX (US);
Larry E. Reimert, Houston, TX (US);
Assignee:
Dril-Quip, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 3/316 ;
U.S. Cl.
CPC ...
E21B 3/316 ;
Abstract
The plug holder sub for being supported on a conveyance tubular temporarily supports a liner wiper plug so that a pump down plug may land in the liner wiper plug and be supported from a generally tubular body of the plug holder sub. The retaining member is provided for attaching the liner wiper plug to the tubular body, and a piston moves within the tubular body from a retaining position to a release position. A metering jet on a fluid flow path from chamber restrains the piston movement, thereby preventing release of the liner wiper plug until the piston moves to the release position.