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US 3,955,600 AGranted
Composite pipeline
AssigneeBechtel International Corporation
InventorRussell D. Tamburello
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AssigneeBechtel International Corporation
InventorRussell D. Tamburello
Estimating the term…
This invention relates to a composite pipeline to be used in a submerged condition, usually in deep water. In accordance with this invention, the composite pipeline comprises a pipeline through which a fluid flows, e.g., oil, gas or a slurry; to provide for electrolytic protection, the pipeline includes a suitable coating or wrapping; finally, to enable the pipeline to be maintained in a submerged condition, an outer coating of concrete is provided about the wrapping. Further and in accordance with this invention, the concrete coating is integrally bonded to the pipeline in such fashion that the three element structure so provided can be said to be a composite structure rather than one made up of three separate elements. Because the composite structure pipeline is structurally one, it is possible to use a lighter weight of material in the pipeline with the result that a saving of as much as two-thirds of the pipeline weight is achieved.
A composite pipeline comprising an elongate pipe of lightweight, load bearing material having a cylindrical outer surface, a coating of two layers of glass fiber on the entire outer surface of the pipe, and a thick layer of load bearing, reinforced concrete cast in place directly on the coating around the pipe, said layer of concrete having a thickness at least ten times as thick as the thickness of the pipe, and said pipe, said coating and said layer of concrete all integrally bonded together, thus resulting in an integral composite pipeline.
A composite pipeline comprising an elongate, cylindrical, load bearing steel pipe, at least one layer of glass fibers bonded to the entire outer surface of the steel pipe, a layer of structural adhesive bonded to the entire outer surface of the glass fibers, and a thick layer of load bearing, reinforced concrete cast in place directly on the layer of adhesive around the pipe, said layer of concrete having a thickness several times as thick as the thickness of the steel pipe, and said pipe, said layer of adhesive, said layer of glass fibers and said layer of concrete all integrally bonded together, thus resulting in an integral, composite pipeline of substantial strength and load bearing ability.
Dependencies are inferred from the claim text.