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.

Date of Patent:
Jul. 28, 2026

Filed:

Aug. 30, 2024
Applicant:

Citadel Casing Solutions, Llc, Houston, TX (US);

Inventors:

Todd Stair, Conroe, TX (US);

Henry E. Rogers, Owasso, OK (US);

Jimmy Venizelos, Richmond, TX (US);

Carlos A. Valdez, Humble, TX (US);

Assignee:

Citadel Casing Solutions LLC, Houston, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/117 (2012.01); E21B 33/12 (2006.01); E21B 33/16 (2006.01); E21B 34/06 (2006.01);
U.S. Cl.
CPC ...
E21B 47/117 (2020.05); E21B 33/12 (2013.01); E21B 33/16 (2013.01); E21B 34/06 (2013.01);
Abstract

A method of well construction includes first, providing a tool with a housing extending from a top end to a bottom end; then, positioning a first valve within the housing, the first valve creating a seal within the housing to prevent fluid flow past the first valve and into a well casing from the bottom end of the housing during a well operation; next, securing the tool to the well casing; then, running the tool and the well casing into a wellbore; and, finally, performing one or more well operations, the one or more well operations do not establish cement integrity within the tool such that the first valve is not filled with cement.


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