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:
May. 24, 2016
Filed:
Jul. 08, 2011
Daniel A. Marroquin, Houston, TX (US);
Flavio Nisenbaum, Rio de Janeiro, BR;
Denise A. M. Antunes, Houston, TX (US);
Larry E. Reimert, Houston, TX (US);
Daniel A. Marroquin, Houston, TX (US);
Flavio Nisenbaum, Rio de Janeiro, BR;
Dril-Quip, Inc., Houston, TX (US);
Abstract
A seal assembly () and a running tool () are provided for sealing a casing annulus in a wellhead (). A casing hanger () includes a radially external groove therein, and wellhead has a radially internal groove therein. A locking ring () may be actuated by the running tool to move into the internal recess in the wellhead and thereby axially connect the seal assembly and the wellhead. Another locking ring () is radially movable to connect the seal assembly to the casing hanger. The seal assembly seals the casing annulus while being interconnected with the wellhead and the casing hanger.