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. 11, 2018
Filed:
May. 22, 2017
Applicant:
Lloyd Murray Dallas, Streetman, TX (US);
Inventor:
Lloyd Murray Dallas, Streetman, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/26 (2006.01); E21B 33/124 (2006.01); E21B 34/06 (2006.01); E21B 17/042 (2006.01); E21B 17/08 (2006.01); E21B 43/08 (2006.01); E21B 43/267 (2006.01); E21B 33/14 (2006.01); E21B 34/08 (2006.01);
U.S. Cl.
CPC ...
E21B 34/063 (2013.01); E21B 17/042 (2013.01); E21B 17/08 (2013.01); E21B 33/124 (2013.01); E21B 33/14 (2013.01); E21B 34/08 (2013.01); E21B 43/086 (2013.01); E21B 43/267 (2013.01);
Abstract
Pressure perforated well casing collars have at least one pressure perforation groove cut to a consistent depth in an a sidewall of the well casing collar with sidewall bottom material at a bottom of the groove. The sidewall bottom material ruptures at a predetermined fluid pressure greater than a burst pressure rating of plain casing joints connected to the well casing collars to assemble a well casing string.