Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1992-03-26
1993-03-09
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405167, 405171, F16L 116
Patent
active
051921669
ABSTRACT:
A method is described for controlled bending of a pipeline during the laying thereof in the sea, utilizing bend controlling/stopping means which are mounted on the pipeline as a sleeve and interact with the pipeline. To achieve cold bending under controlled conditions, the pipeline is weight loaded internally at the selected bending zone. The weight loading may be achieved by means of a flexible string of weight elements and/or by introducing into the pipe a suitable heavy, readily flowable weight mass, for example, drilling fluid.
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patent: 3813477 (1974-05-01), Fischer
patent: 3893305 (1975-07-01), Walker
patent: 3911689 (1975-10-01), Hogan
patent: 3977201 (1976-08-01), Bittner
patent: 4011620 (1977-03-01), Southgate
Corbin David H.
International Technologies A/S
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