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:
Jul. 18, 2006
Filed:
Dec. 19, 2003
Simon J. Harrall, Inverurie, GB;
Simon J. Harrall, Inverurie, GB;
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A method and apparatus for a wellbore expandable connection is disclosed. The connection may include a pin having an outward tapered threaded section and a box having an inward tapered threaded section. The threaded sections form a connection of a predetermined integrity upon make-up. An embodiment of the connection includes at least one interface area of the connection that lacks intimate contact between the pin and the box upon initial make-up. Either the box or the pin, or both, have a friction surface at the interface area. Radial expansion of the connection places the pin in contact with the box at the interface area such that the friction surface between them locks the connection. In one embodiment, the connection includes a receptacle profiled in a portion of the box that provides space within the connection for material that extrudes from the pin during expansion of the connection.