Jeffrey Thomas Mccarty

US Patent:

20050147473, Jul 7, 2005

Filed:

Dec 23, 2004

Appl. No.:

11/020857

Inventors:

Joseph Pallini - Tomball TX, US
Jeffrey McCarty - Houston TX, US
Charles Jennings - Houston TX, US

International Classification:

E02D005/62
E21B017/01

US Classification:

405224400, 405224200, 166367000

Abstract:

A surface assembly that communicates with subsea structures and includes a working deck on a floating structure. The working deck has an aperture extending axially therethrough. A riser extends from a subsea location to the working deck and through the aperture. The surface assembly includes a frame extending circumferentially around the riser so that the frame moves axially with the riser. The assembly also includes a tensioner assembly connected between the working deck and the frame. The tensioner assembly has a piston, a piston chamber, and a piston rod extending from the piston and away from the piston chamber. A shroud encloses and moves in unison with the piston rod.