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:
Jan. 29, 2019
Filed:
Feb. 15, 2016
Dril-quip, Inc., Houston, TX (US);
Mark A. Manning, Houston, TX (US);
Dril-Quip, Inc., Houston, TX (US);
Abstract
An improved seal disposed at an interface of a main body of an inner drilling riser tie-back connector (ITBC) and a subsea wellhead is provided. The seal comprises a main body portion formed of a pair of opposed inwardly projecting fingers having a saw-cut profile at their ends and an outwardly projecting lever arm disposed adjacent to and at an outward angle to one of the opposed inwardly projecting fingers. Under loading the outwardly projecting lever arm imparts a bending moment to the seal, which enhances the seal created between the ITBC and the subsea wellhead and reduces the torque required to disengage the internal tie-back connector.