Composite spoolable tube
AssigneeFiberspar Spoolable Products, Inc.
InventorsPeter A. Quigley, Stephen C. Nolet
Life of this patent
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Abstract
A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.
Claims67
A spoolable composite tube, said tube comprising
- a substantially fluid impervious inner liner,
- a first composite layer enclosing said liner and formed of fiber and matrix, said first composite layer having a first fiber extending helically and having a second clockwise extending fiber and having a third counter clockwise extending fiber, such that said first fiber is interwoven with at least one of said second fiber and said third fiber, and
- a first energy conductor embedded in and extending along the length of said spoolable composite tube.
A spoolable composite tube, said tube comprising
- a substantially fluid impervious inner liner,
- a first composite layer enclosing said liner, said first composite layer being formed of a matrix and a first set of fibers, and
- an energy conductor embedded in and extending along the length of the spoolable composite tube,
- wherein the maximum tensile strain of said spoolable composite tube when spooled on a reel is at least 0.25 percent.
Dependencies are inferred from the claim text.