Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1977-07-14
1978-10-17
Shapiro, Jacob
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
138111, 138112, 405171, F16L 100
Patent
active
041201680
ABSTRACT:
The invention consists of an apparatus for laying a pipeline, such as an oil duct or a gas duct, in a body of water, wherein the pipeline, or a section thereof, is enclosed within a ballast tube such that an intermediate space is formed between the pipeline or pipeline section and the ballast tube, said space being filled with a liquid less dense than water, such as a light hydrocarbon, while the pipeline is being laid, but may be filled, after the pipeline has been laid, with soft water or with a liquid heavier than water such as a grouting having a base of a hydraulic or hydrocarbon binder. The invention also comprises the provision of a plug at one end of an assembly of pipeline section and ballast tube whereby a free end of said assembly may be secured as by welding to a second assembly of pipeline section and ballast tube at a position remote from the liquid contained in the intermediate space in said first assembly.
REFERENCES:
patent: 1761281 (1930-06-01), Taub
patent: 2696835 (1954-12-01), Kaiser
patent: 2962051 (1960-11-01), Burkes, Jr.
patent: 3143861 (1964-08-01), Dumas
patent: 3466881 (1969-09-01), Lamy
patent: 4048807 (1977-09-01), Ellers et al.
Brown Laurence R.
Compagnie Generale pour les Developpements Operationnels des Ric
Shapiro Jacob
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