Pipe string lift system

Details Pipe string lift system Pipe string lift system

1981-11-02

1984-03-27

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

Clutch actuated

B66F 100

Patent

active

044389027

ABSTRACT:
A system for supporting a long, heavy dredge pipe string from a moving surface vessel, with a minimum of stress being applied to the pipe. The system comprises a gimbaled platform, supported over a central well through a vessel by two horizontal axes perpendicular to each other. A carriage is supported from the platform on hydraulic piston rods. Pipe string support plates are movably secured to facing surfaces on the carriage and platform, arranged about central openings, to permit close-coupling of the two sets of support plates when transferring the pipe string. There is also provided a pair of lateral support members for the pipe string at the bottom of the well.

REFERENCES:
patent: 3517910 (1970-06-01), Sutton et al.
patent: 3565400 (1971-02-01), Yamura
patent: 3765649 (1973-10-01), Raaymakers
patent: 4109975 (1978-08-01), Mattson

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