Riser pipe for pivotally attached structure used to extract petr

Details Riser pipe for pivotally attached structure used to extract petr Riser pipe for pivotally attached structure used to extract petr

1976-04-09

1977-11-15

Nilson, Robert G.

Fluid handling

Distribution systems involving geographic features

61 95, E02D 2100

Patent

active

040581373

ABSTRACT:
A riser pipe consists of a plurality of sections of production pipe which are centered and free to slide axially in a guide shaft. The guide shaft is fixed to a pivoted structure and the riser pipe comprises a lower section which is connected at one end to piping at the bottom of the water by means of a remotely controlled releasable connector and at the other end to the penultimate section of the pipe by a connector which is longitudinally slidable to the said guide shaft. The bending stresses on the pipe may be distributed over the length of a lowermost section which may be removed and replaced from the surface.

REFERENCES:
patent: 3522709 (1970-08-01), Vilain
patent: 3677016 (1972-07-01), Garrigus

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