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:
Jun. 11, 2024
Filed:
Apr. 11, 2022
Applicant:
Canadian Casing Accessories Inc., Calgary, CA;
Inventor:
Lyle Laun, Calgary, CA;
Assignee:
Canadian Casing Accessories, Inc., Calgary, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/06 (2006.01); E21B 23/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/063 (2013.01); E21B 23/00 (2013.01); E21B 2200/08 (2020.05);
Abstract
According to embodiments, a modified casing buoyancy system is provided for use as either one or both a casing buoyancy tool during casing operations and a cement plug during cementing operations, the apparatus being operably connected to a casing string and having at least two tubulars, wherein a portion of at least one (outer) tubular comprises at least one connector for controllably releasing said tubular downhole, and at least a portion of the other (inner) tubular comprises a dissolvable portion for controllably degrading thereof.