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:
May. 02, 2017
Filed:
Oct. 23, 2013
Applicant:
Tejas Research & Engineering, Llc, The Woodlands, TX (US);
Inventors:
Robert C. Henschel, The Woodlands, TX (US);
Thomas G. Hill, Conroe, TX (US);
Assignee:
Tejas Research & Engineering, LLC, The Woodlands, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/16 (2006.01); E21B 34/10 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/16 (2013.01); E21B 34/10 (2013.01); E21B 2034/005 (2013.01);
Abstract
A safety system for a well having a cable deployed electronic submersible pump includes a barrier valve having a control line for opening and closing the valve, a first flapper safety valve assembly, and a second flapper safety valve assembly. The second flapper safety valve allows the cable for the pump to pass through the second flapper safety valve when the valve is in a closed position. An integral flapper safety valve assembly incorporates the first and second flapper safety valves.