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:
Dec. 30, 2014
Filed:
Oct. 14, 2011
Applicants:
Henry He, Edmonton, CA;
Kwong-onn Chan, Edmonton, CA;
Gene Ambrose, Calgary, CA;
Inventors:
Assignee:
Vetco Gray Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 23/00 (2006.01); E21B 43/10 (2006.01); E21B 33/03 (2006.01); E21B 33/04 (2006.01); E21B 33/05 (2006.01); E21B 33/13 (2006.01);
U.S. Cl.
CPC ...
E21B 33/03 (2013.01); E21B 33/04 (2013.01); E21B 33/05 (2013.01); E21B 33/13 (2013.01);
Abstract
A landing ring having at least one scallop groove formed on an interior of the ring. The landing ring interfaces with a fluted mandrel casing hanger such that the scallop groove aligns between flutes of the hanger. This alignment of the scallop groove of the landing ring with the fluted mandrel casing hanger provides sufficient clearance to allow a stabbing in of a cement tube for cement injection during cement topping operations or debris clean out down hole.