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. 20, 2020
Filed:
Oct. 23, 2014
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventor:
Douglas Brian Farley, Missouri City, TX (US);
Assignee:
Weatherford Technology Holdings, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/14 (2006.01); E21B 34/14 (2006.01); E21B 43/10 (2006.01);
U.S. Cl.
CPC ...
E21B 33/14 (2013.01); E21B 34/14 (2013.01); E21B 43/108 (2013.01);
Abstract
A method and apparatus for cementing a casing string in a wellbore includes installing an expandable port collar in the casing string; providing cement from the casing string through at least one aperture in a wall of the port collar to an annular area surrounding the port collar; and expanding the port collar to increase its inner diameter.