Motion compensator

Details Motion compensator Motion compensator

2007-03-20

2007-03-20

Will, Thomas B. (Department: 3671)

Wells

Submerged well

Means removably connected to permanent well structure

C166S350000, C166S352000, C166S367000, C166S368000

Reexamination Certificate

active

11185217

ABSTRACT:
A motion compensator is used on a floating vessel servicing a subsea well. The motion compensator includes a first frame assembly adapted to be connected to a cable extending from a lifting structure. When connected to the cable, the first frame assembly extends longitudinally along an axis substantially parallel with that of the cable. The motion compensator also includes a second frame assembly connected to the first frame assembly. The second frame assembly overlaps a longitudinal portion of the first frame assembly. The first and second frame assemblies are moveable relative to each other and define an expanded position and a contracted position. The motion compensator further includes a piston assembly positioned between the first and second frame assemblies. The piston assembly has a piston chamber and a piston that slidingly engages the piston chamber when the first and second rod assemblies move relative to each other.

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JMC Technology Website Printout, http://www.jmc.no/technology/coiled—tubing/heave—compensators.php, 2 pages, May 31, 2005.

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