Buoyant ring gasket installation tool

Details Buoyant ring gasket installation tool Buoyant ring gasket installation tool

1985-02-19

1986-10-21

Husar, Cornelius J.

Hydraulic and earth engineering

Diving

Remote control

29235, 29451, 405188, 405195, B63C 1100

Patent

active

046182853

ABSTRACT:
A method and apparatus are described for the installation and removal of a ring gasket from a ring gasket retainer assembly which forms a part of an underwater wellhead connection. A buoyant ring gasket installation tool, tethered to an underwater vehicle, carries the gasket to the wellhead connection. Due to the buoyancy of the installation tool it floats above the underwater vehicle. By proper placement of the tool beneath an opening defined upwardly through the wellhead connection the tool may float the ring gasket upwardly through the opening and position the ring gasket properly with respect to the ring gasket retainer assembly, which may then be actuated to retain the gasket within the underwater wellhead connection.

REFERENCES:
patent: 3350103 (1967-10-01), Ahlstone
patent: 3463226 (1969-08-01), Johnson
patent: 4386659 (1983-06-01), Shotbolt
patent: 4417830 (1983-11-01), Shotbolt
patent: 4478586 (1984-10-01), Gentry et al.
patent: 4515376 (1985-05-01), Okamuro

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