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. 16, 2017
Filed:
May. 28, 2013
Weatherford/lamb, Inc., Houston, TX (US);
Kannan Devarajan, Abu Dhabi, AE;
Muhammad Saleem Pervez, Dubai, AE;
George Givens, Spring, TX (US);
Alexis Takotue, Dubai, AE;
Mujeer Ahmed Mohammed, Abu Dhabi, AE;
Weatherford Technology Holdings, LLC, Houston, TX (US);
Abstract
A packoff for hanging a liner string from a tubular string cemented in a wellbore includes: a tubular body having an outer groove and an inner groove; an inner seal assembly disposed in the inner groove; an outer seal assembly disposed in the outer groove; a cap connected to an upper end of the body for retaining the seal assemblies; a plurality dogs disposed in respective openings formed through a wall of the body; and a lock sleeve. The lock sleeve is: disposed in the body, longitudinally movable relative to the body, and has a cam profile formed in an outer surface thereof for extending the dogs.