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. 30, 2019
Filed:
Apr. 10, 2017
Applicant:
Packers Plus Energy Services Inc., Calgary, CA;
Inventors:
Daniel Jon Themig, Calgary, CA;
Christopher Denis Desranleau, Androssan, CA;
James Fehr, Sherwood Park, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01); E21B 33/14 (2006.01); E21B 21/10 (2006.01); E21B 34/10 (2006.01); E21B 34/00 (2006.01); E21B 23/06 (2006.01);
U.S. Cl.
CPC ...
E21B 34/14 (2013.01); E21B 21/103 (2013.01); E21B 33/14 (2013.01); E21B 33/146 (2013.01); E21B 34/102 (2013.01); E21B 23/06 (2013.01); E21B 2034/007 (2013.01);
Abstract
A stage tool for wellbore annular cementing may be opened for cementing by hydraulic actuation of a sliding sleeve valve from over a fluid port. After sufficient cement has been introduced, the stage tool fluid port can be closed by compressing two telescopically arranged parts of its tubular body to further overlap each other and overlie the fluid port. This permits the stage tool to be closed without employing a plug.