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US 5,002,130 AGranted
System for handling reeled tubing
AssigneeOtis Engineering Corporation
InventorTibor Laky
Life of this patent
Estimating the term…
Abstract
A system for handling a reeled tubing including a guide, a shear for cutting the tubing and a tubing injector including upper and lower strippers and guides and an enclosure for the injector. The enclosure in one form excludes sea water in an open bottomed enclosure and the other maintains pressure in a completely closed enclosure.
Claims4
A tubing handling system for underwater service comprising;
- a tubing injector for moving tubing through a subsea wellhead,
- an open bottom enclosure for said injector,
- a source of gas under pressure, and
- means including a float operated valve metering said gas into said enclosure and maintaining the water level in said enclosure below said injector.
1 more element
A tubing handling system for underwater service comprising:
- a tubing injector for moving tubing through a wellhead;
- a fluid tight enclosure for said injector;
- a cylinder having one end section communicating with water exterior of said enclosure and its other end section communicating with the interior of said enclosure;
- said one end section of said cylinder of a larger diameter than said other end section;
- a piston in each said end section;
- rod means interconnecting said pistons;
- fluid means connected to said cylinder between said pistons and including:
- a bladder type accumulator with a gas charge,
- conduit means for monitoring pressure and for adding and venting fluid from said cylinder;
- and
- a conduit communicating with the enclosure for adding and removing fluid.
8 more elements
Dependencies are inferred from the claim text.