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. 13, 2009
Filed:
Sep. 13, 2006
Gabriel Slup, Spring, TX (US);
Douglas J. Lehr, The Woodlands, TX (US);
Tommy J. Allen, Odessa, TX (US);
Blake Robin Cox, Midland, TX (US);
Donald W. Deel, Sonora, TX (US);
Samuel Mark Zimmerman, Cypress, TX (US);
Gabriel Slup, Spring, TX (US);
Douglas J. Lehr, The Woodlands, TX (US);
Tommy J. Allen, Odessa, TX (US);
Blake Robin Cox, Midland, TX (US);
Donald W. Deel, Sonora, TX (US);
Samuel Mark Zimmerman, Cypress, TX (US);
BJ Services Company, Houston, TX (US);
Abstract
A method and apparatus for use in a subterranean well is described. The apparatus typically includes a mandrel and a packing element. The mandrel may have an outer surface and a non-circular cross-section and the packing element may be arranged about the mandrel, the packing element having a non-circular inner surface matching the mandrel outer surface such that concentric rotation between the mandrel and the packing element is precluded. The apparatus may include slips having cavities to facilitate removal of the apparatus. The apparatus also may include a valve for controlling upward fluid flow through a hollow mandrel. The valve may include a flapper having at least one tab to engage at least one recession in the mandrel such that rotation between the mandrel and the valve is precluded when the valve is in a closed position. The apparatus may further include a central member which is releaseably attached to the mandrel by a release mechanism.