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:
Aug. 31, 2004
Filed:
Oct. 11, 2002
Applicant:
Inventors:
Thomas W. Garay, Humble, TX (US);
Edward J. Zisk, Kingwood, TX (US);
Brian A. Roth, Houston, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 3/410 ;
U.S. Cl.
CPC ...
E21B 3/410 ;
Abstract
A downhole well valve having a variable area orifice ( ) is flow area adjusted by a sliding sleeve ( ) that is axially shifted along a tubular housing ( ) interior in a finite number of increments. A hydraulic actuator ( ) displaces a predetermined volume of hydraulic fluid with each actuator stroke. An actuator displaced volume of fluid shifts the flow control sleeve by one increment of flow area differential. An indexing mechanism ( ) associated with the sleeve provides a pressure value respective to each increment in the increment series.