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US 7,029,356 B2Granted
Buoyancy control systems for tubes
AssigneeFiberspar Corporation
InventorsPeter A. Quigley, Stephen C. Nolet, Thomas W. Wideman
Life of this patent
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Abstract
Buoyancy control methods for tubes are described. In one embodiment, a buoyancy control method can include a composite tube and a buoyancy control material for controlling the buoyancy of the composite tube. The composite tube can include an internal liner an external coaxial composite layer of fibers embedded in a matrix. One or more portions of the buoyancy control material can be attached to one or more portions of the composite tube to adjust the buoyancy of the one or more portions of the tube.
Claims20
A method, comprising:
- providing a generally tubular length of buoyancy control material, where the material comprises a negatively buoyant slurry,
- attaching the length of buoyancy control material to a section of the length of a tube to adjust the buoyancy of the section of the tube;
- and
- using at least one of a curing agent, a hardener, and a gellation agent to cause the buoyancy control material to set.
1 more element
Dependencies are inferred from the claim text.