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. 18, 2023
Filed:
Apr. 26, 2021
Applicant:
James G. Rairigh, Houston, TX (US);
Inventor:
James G. Rairigh, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/02 (2006.01); E21B 17/00 (2006.01); E21B 43/11 (2006.01); F42B 1/02 (2006.01); E21B 23/04 (2006.01);
U.S. Cl.
CPC ...
E21B 29/02 (2013.01); E21B 17/006 (2013.01); E21B 23/0414 (2020.05); E21B 43/11 (2013.01); F42B 1/02 (2013.01);
Abstract
A shaped charge assembly for selectively expanding a wall of a tubular includes first and second explosive units that are each symmetrical about an axis of revolution. Each explosive unit includes an explosive material that is liner-less. The first and second explosive units comprise a predetermined amount of explosive sufficient to expand, without puncturing, at least a portion of the wall of the tubular into a protrusion extending outward into an annulus adjacent the wall of the tubular.