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. 23, 2019
Filed:
Mar. 07, 2016
Applicant:
Tejas Research & Engineering, Llc, The Woodlands, TX (US);
Inventor:
Jason C. Mailand, The Woodlands, TX (US);
Assignee:
Tejas Research & Engineering, LLC, The Woodlands, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/10 (2006.01); E21B 34/06 (2006.01);
U.S. Cl.
CPC ...
E21B 17/10 (2013.01); E21B 34/06 (2013.01);
Abstract
A protective sleeve is deployable within an oil/gas well to protect a device installed in the well such as a safety valve, for example. The sleeve includes a pressure equalizing dart and an overpressure protection piston. The sleeve also serves to isolate an installed device from harmful substances such as acids and other corrosive fluids.