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:
Oct. 28, 2014
Filed:
Aug. 28, 2012
Chau Hoang, Houston, TX (US);
Khanh Anh Duong, Houston, TX (US);
William Ryan Moore, Houston, TX (US);
Karl A. Parfrey, Houston, TX (US);
Clayton Griffin, Houston, TX (US);
Chau Hoang, Houston, TX (US);
Khanh Anh Duong, Houston, TX (US);
William Ryan Moore, Houston, TX (US);
Karl A. Parfrey, Houston, TX (US);
Clayton Griffin, Houston, TX (US);
Vetco Gray Inc., Houston, TX (US);
Abstract
A seal assembly for use with a casing hanger that includes a pair of split rings held together by a threaded fastener. Torqueing the fastener axially compresses one of the rings so that it expands radially inward into sealing engagement with a wall of wellbore casing, and radially outward against an inner wall of a wellhead housing. Support grommets are provided where the fastener enters and exits the compressible ring. Protrusions on a side of the support grommets project into the compressible ring and create a sealing interface between each support grommet and compressible ring. O-rings line inner circumferences of the support grommets to seal between the support grommets and fasteners. A threaded end on a lower end of the fastener has a diameter less than an inner diameter of the O-rings to prevent damaging the O-rings during assembly.