Method and apparatus for assembling or disassembling an...

Details Method and apparatus for assembling or disassembling an... Method and apparatus for assembling or disassembling an...

1997-07-21

2001-07-17

Echols, P. W. (Department: 3726)

Metal working

Method of mechanical manufacture

Disassembling

C029S525020, C029S452000, C081S057140

Reexamination Certificate

active

06260252

ABSTRACT:

The invention relates to a method for assembling or disassembling a pipeline on a seabed. Nut and bolt connections are herein released by divers using a wrench. This is heavy and difficult work. It is impossible for divers to operate at considerable depth. Complicated and very costly pipeline connections are then applied which can be released and secured without divers.
The invention has for its object to reduce the stated drawbacks of the known method. To this end the invention provides an improved method and apparatus herein described.
In addition to use on pipelines lying on the seabed the method according to the invention can also be applied to drilling rigs, oil or gas extraction wells or other constructions located under water.


REFERENCES:
patent: 4569258 (1986-02-01), Orban
patent: 4832530 (1989-05-01), Andersen et al.

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