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US 4,979,296 AGranted
Method for fabricating helical flowline bundles
AssigneeShell Oil Company
InventorsCarl G. Langner, Joe O. Esparza
Life of this patent
Estimating the term…
Abstract
A flowline bundle is twisted or braided into a permanent rope-like helical configuration, prior to laying the flowline bundle offshore by the reel method. Apparatus for forming the helical flowline bundle includes a pipe twist head and a series of pipe tumblers alternating with intermediate pipe supports, which apparatus rotates and translates part of a flowline bundle while simply translating the other part.
Claims20
A method for fabricating a helical flowline bundle comprising:
- assembling a first bundle of essentially parallel flowlines;
- twisting at least part of the first bundle into an essentially helical configuration;
- assembling a second bundle of essentially parallel flowlines;
- attaching the first bundle to the second bundle with fluid-tight connections;
- and
- twisting any remaining part of the first bundle and at least part of the second bundle into an essentially helical configuration.
3 more elements
A method for fabricating a helical flowline bundle comprising:
- assembling a first bundle of essentially parallel flowlines;
- twisting the first bundle into an essentially helical configuration;
- assembling a second bundle of essentially parallel flowlines;
- twisting the second bundle into an essentially helical configuration;
- and
- attaching the first bundle to the second bundle with fluid-tight connections.
3 more elements
Dependencies are inferred from the claim text.