Method and apparatus for covering or filling a trench on the sea

Details Method and apparatus for covering or filling a trench on the sea Method and apparatus for covering or filling a trench on the sea

1978-06-05

1980-03-18

Britts, Ramon S.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

B63B 3504

Patent

active

041937139

ABSTRACT:
Disclosed are a method and apparatus for the covering and filling of a trench used for an oil and/or gas conduit on the sea bottom which utilize a surface vessel retained in position over the trench by means of positioning equipment while filling material is released downwardly towards the trench and sea bottom from the vessel. The method comprises supplying filling material, heavily mixed with water, to the surface vessel from a store or the like via a preferably floating hose, reducing the water content of the filling material in a separator aboard the vessel, and conveying the filling material thus treated downwardly to the trench and sea bottom via a tube or the like whose mouth is retained adjacent to the trench and the sea bottom.

REFERENCES:
patent: 3673808 (1972-07-01), Volbeda
patent: 3890741 (1975-06-01), De Koning et al.

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