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:
Sep. 01, 2015
Filed:
Nov. 12, 2010
Applicants:
Daniel Jon Themig, Calgary, CA;
Christopher Denis Desranleau, Sherwood Park, CA;
James Fehr, Sherwood Park, CA;
Inventors:
Daniel Jon Themig, Calgary, CA;
Christopher Denis Desranleau, Sherwood Park, CA;
James Fehr, Sherwood Park, CA;
Assignee:
PACKERS PLUS ENERGY SERVICES INC., Calgary, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 34/00 (2006.01); E21B 43/00 (2006.01); E21B 33/14 (2006.01); E21B 21/10 (2006.01);
U.S. Cl.
CPC ...
E21B 33/146 (2013.01); E21B 21/103 (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.