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:
Apr. 13, 2004
Filed:
Jun. 07, 2002
Laurent E. Muller, Sugar Land, TX (US);
Larry L. Grigar, East Bernard, TX (US);
Steven W. Henderson, Katy, TX (US);
Klaus B. Huber, Sugar Land, TX (US);
Bennie C. Gill, Fulshear, TX (US);
Rolf Ludolf, Sugar Land, TX (US);
Gary L. Rytlewski, League City, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Well surface equipment is provided to seal around the outer surface of portions of tool sections as the tool sections are assembled or disconnected in a portion of the well surface equipment. The portion of the well surface equipment is isolated from wellhead pressure to enhance well operator control during assembly or disassembly of a tool string. Also, if a fluid path is opened up due to activation of the tool string (such as initiation of a detonating cord that is placed in the fluid path), a barrier mechanism is actuated to block fluid communication through this fluid path so that a portion of the well surface equipment can remain isolated from wellhead pressure to enable convenient retrieval and disconnection of tool sections.