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:
Nov. 30, 2010
Filed:
Jul. 01, 2004
Applicant:
Brendon Hamilton, Medicine Hat, CA;
Inventor:
Brendon Hamilton, Medicine Hat, CA;
Assignee:
Calfrac Well Services Ltd., Calgary, Alberta, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/126 (2006.01); E21B 43/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tool for use in the treatment of a formation penetrated by a well bore. The tool comprises a tubular core having at least one opening therein for the discharge of pressurized fluid from within the core, first and second axially spaced apart seals disposed on the core for seals between the core and the well bore, the opening in the core being located between the first and second seals, and a third seal disposed downhole relative to the first and second seals for sealing between the tool and the well bore, the third seal protecting the first and second seals from pressure in the well bore below the tool.