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:
Feb. 20, 2007
Filed:
Feb. 12, 2003
Robert J. Anderson, Aberdeen, GB;
Nathaniel H. Wagner, Spring, TX (US);
Roddie R. Smith, Cypress, TX (US);
John Hanton, Jakarta, ID;
Robert J. Anderson, Aberdeen, GB;
Nathaniel H. Wagner, Spring, TX (US);
Roddie R. Smith, Cypress, TX (US);
John Hanton, Jakarta, ID;
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A subsurface safety valve assembly for controlling fluid flow in a wellbore. In one embodiment, the subsurface safety valve assembly includes a tubular member having a longitudinal bore extending therethrough, a flapper removably connected to the tubular member. The flapper is configured to pivot against the tubular member between an open position and a closed position. The subsurface safety valve assembly further includes a flow tube disposed inside the tubular member and a shear sleeve having an upper end and a lower end. The upper end of the shear sleeve is positioned against a lower end of the flow tube to form a first seal between the upper end of the shear sleeve and the lower end of the flow tube.