Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1990-08-17
1991-02-12
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405168, F16L 116
Patent
active
049920014
ABSTRACT:
A method of laying pipeline in water greater than 1000 feet deep is disclosed whereby the pipeline is assembled on board a lay barge and then, during deployment, is bent beyond typical elastic bending limitations and Conventional Lay bending strain limitations while passing along a stinger where it is subsequently reverse bent to remove any permanent curvature. Upon further deployment, a generally horizontal axial load is maintained on the pipeline as it come to rest upon the sea floor such that the final in-situ residual bending curvature of the pipeline is nearly zero or falls within an acceptable range.
REFERENCES:
patent: 3641778 (1972-02-01), Gibson
patent: 3715890 (1973-02-01), Langner
patent: 3822559 (1974-07-01), Matthews
patent: 4433938 (1984-02-01), Boon
Corbin David H.
Edwards Robert J.
Hoelter Michael L.
McDermott International Inc.
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