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:
Apr. 16, 2019
Filed:
Apr. 01, 2016
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventors:
Luis A. Urdaneta Nava, Cypress, TX (US);
Paul Andrew Reinhardt, Houston, TX (US);
Assignee:
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/14 (2006.01); E21B 34/00 (2006.01); E21B 34/10 (2006.01); E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 34/10 (2013.01); E21B 33/14 (2013.01); E21B 34/14 (2013.01); E21B 2034/007 (2013.01);
Abstract
A method and apparatus for filling an annulus between a wellbore and a casing string with cement are provided. A baffle is arranged between a port on a side of the casing string and an interior volume of the casing string. The baffle includes orifices arranged there around that distribute the flow of cement about the circumference. After the cement has been pumped, a sealing sleeve is moved over the baffle and the port and forms a metal-to-metal seal that isolates the baffle and the port from the interior volume of the casing string.