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:
Jun. 03, 2014
Filed:
Sep. 21, 2010
Applicants:
Nobuyoshi Niina, Cheltenham, GB;
Oleg Polyntsev, Cheltenham, GB;
Inventors:
Nobuyoshi Niina, Cheltenham, GB;
Oleg Polyntsev, Cheltenham, GB;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 34/06 (2006.01); E21B 7/04 (2006.01); F16K 31/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A valve system structure to facilitate actuation of tools, such as actuating pads in a steering section of a wellbore drilling assembly. A valve system may comprise a bi-stable actuator which controls two double-stage valves. Each of the double-stage valves is able to perform both charging and dumping functions which facilitate use of the valve system in a variety of downhole applications. In drilling applications, a single valve system is able to operate a plurality of actuating pads.