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:
Oct. 11, 2016
Filed:
Oct. 11, 2013
Applicant:
Welldynamics, Inc., Spring, TX (US);
Inventors:
Timothy R. Tips, Montgomery, TX (US);
Alfred R. Curington, The Woodlands, TX (US);
Assignee:
WellDynamics, Inc., Spring, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/10 (2006.01); E21B 34/14 (2006.01); E21B 33/14 (2006.01); E21B 43/14 (2006.01); E21B 43/16 (2006.01); E21B 43/24 (2006.01); E21B 43/25 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/14 (2013.01); E21B 33/14 (2013.01); E21B 34/10 (2013.01); E21B 34/102 (2013.01); E21B 43/14 (2013.01); E21B 43/162 (2013.01); E21B 43/2406 (2013.01); E21B 43/25 (2013.01); E21B 2034/007 (2013.01);
Abstract
A valve for use in a tubular string in a subterranean well includes a sleeve having first and second opposite ends, the sleeve being displaceable between open and closed positions to thereby selectively permit and prevent flow through a sidewall of a housing assembly, and a first and second pistons at the respective first and second ends of the sleeve. Pressure differentials applied to the first and second pistons are operative to displace the sleeve between its open and closed positions.