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. 25, 2007
Filed:
Jun. 10, 2004
Applicants:
Stephane Hiron, Houston, TX (US);
Rodney J. Wetzel, Katy, TX (US);
Philippe Gambier, Houston, TX (US);
Inventors:
Stephane Hiron, Houston, TX (US);
Rodney J. Wetzel, Katy, TX (US);
Philippe Gambier, Houston, TX (US);
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/37 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is a valve that prevents blow-outs through a control line while simultaneously allowing bi-directional flow or pressure transfer through the control line. The invention comprises a shuttle valve disposed in the control line.