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. 07, 2009
Filed:
Sep. 02, 2005
Stanley Hosie, Katy, TX (US);
David S. Christie, Aberdeen, GB;
Alistair Macdonald, Cowie Wynd Torphins, GB;
Paul Findlay Milne, Aberdeen, GB;
Stanley Hosie, Katy, TX (US);
David S. Christie, Aberdeen, GB;
Alistair MacDonald, Cowie Wynd Torphins, GB;
Paul Findlay Milne, Aberdeen, GB;
Vetco Gray Inc., Houston, TX (US);
Abstract
An apparatus for performing operations on an offshore well includes a subsea wellhead assembly. A riser extends from the subsea wellhead assembly to a surface vessel. A tool connects to a running string and is lowered through the riser into the wellhead assembly for performing operations at the wellhead assembly. A subsea controller is located adjacent the subsea wellhead assembly. The subsea controller controls the operation of the tool. A surface controller is positioned on the surface vessel, and is in communication with the subsea controller via a control line extending downward from the surface controller to the subsea controller. The control line extends downward from the surface controller along an exterior of the riser.