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. 04, 2002
Filed:
Aug. 20, 1999
Applicant:
Inventors:
David Joseph Walker, Lafayette, LA (US);
Dewayne Turner, Tomball, TX (US);
William D. Henderson, League City, TX (US);
Mike Ritter, The Woodlands, TX (US);
Assignee:
OSCA, Inc., Lafayette, LA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 3/410 ; E21B 4/312 ;
U.S. Cl.
CPC ...
E21B 3/410 ; E21B 4/312 ;
Abstract
The present invention relates to a pressure actuated valve for use in well completion assemblies. The valve is operable by pressure between three configurations. In a first configuration, the valve is in a locked-closed configuration. In a second configuration, the valve remains closed but is unlocked. In a third configuration, the valve is open. Also disclosed is a method of installing and operating a three pressure actuated valve in a well completion operation.