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:
Aug. 02, 2016
Filed:
Mar. 15, 2013
Applicant:
Pioneer Natural Resources Usa, Inc., Irving, TX (US);
Inventors:
Assignee:
Pioneer Natural Resources USA, Inc., Irving, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/26 (2006.01); E21B 41/00 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 43/26 (2013.01); E21B 41/0057 (2013.01); E21B 2034/007 (2013.01);
Abstract
A down-hole treatment tool including a tool body having a bore therethrough, a treatment port orifice disposed on the body, a sliding sleeve within the bore of the body. A constant-volume annular chamber, in isolation from the inner bore and the environment outside the body, provides a debris-free environment for locking the sleeve. A dissolvable treatment port cover provides protection of the treatment port until operation of the treatment port is needed. The treatment port cover and lubrication ports enable lubrication of the sleeve and inner bore of the body without risk of contamination by debris.