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. 05, 2015
Filed:
Jun. 22, 2012
Applicant:
Dennis Joel Penisson, Raceland, LA (US);
Inventor:
Dennis Joel Penisson, Raceland, LA (US);
Assignee:
Wellbore Specialties, LLC, Houma, LA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 34/00 (2006.01); E21B 47/022 (2012.01);
U.S. Cl.
CPC ...
E21B 47/022 (2013.01);
Abstract
A back-up ring for use in a liner top test tool for testing casing integrity in a wellbore is disclosed. The back-up ring is comprised of first and second ring elements that are biased apart by a compression springs. The first ring element has a plurality of radially extending flanges that cover a plurality of channels in the second ring element when the back-up ring is compressed against a seal element on the liner top test tool to seal the wellbore casing.