Composite spoolable tube
AssigneeFiberspar Spoolable Products, Inc.
InventorsPeter A. Quigley, Stephen C. Nolet, Jerry G. Williams
Life of this patent
Estimating the term…
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 extending along a longitudinal axis, said tube comprising:
- a substantially fluid impervious liner,
- a composite layer enclosing said liner, said composite layer being formed of fibers embedded in a matrix, and
- an energy conductor helically oriented relative to the longitudinal axis, said energy conductor being embedded in at least one of said liner and said composite layer.
A spoolable composite tube extending along a longitudinal axis, said tube comprising:
- a substantially fluid impervious liner,
- a composite layer enclosing said liner, said composite layer being formed of fibers embedded in a matrix,
- a pressure barrier layer external to said composite layer for preventing fluids from penetrating into said composite layer, and
- an energy conductor helically oriented relative to the longitudinal axis, said energy conductor being embedded in said pressure barrier layer.
A spoolable composite tube, said tube comprising
- a substantially fluid impervious inner liner, and
- 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, said matrix being selected from the group consisting of:
- thermoplastic and thermoset polymers.
A spoolable composite tube, said tube comprising
- a substantially fluid impervious inner liner, and
- a first composite layer enclosing said liner, said first composite layer being formed of a matrix and a first set of fibers having at least 80 percent, by fiber volume, of the fibers helically oriented relative to the longitudinal axis at an angle between 30 degrees and 70 degrees, said matrix being selected from the group consisting of:
- thermoplastic and thermoset polymers,
- wherein the maximum tensile strain of said composite tube, formed from said liner and said composite layer, when spooled on a reel is at least 0.25 percent.
A spoolable composite tube having a longitudinal axis and comprising
- a tubular, substantially fluid impervious inner liner,
- a first composite layer enclosing said liner and formed of a helically oriented first set of fibers and of polymeric matrix, said matrix being selected from the group consisting of:
- thermoplastic and thermoset polymers, and
- an outer protective layer external to and enclosing said first composite layer, said outer protective layer being structured to provide wear resistance and having an outer surface with a coefficient of friction less than the coefficient of friction of said composite layer,
- wherein said liner and said composite layer and said outer protective layer constitute a composite tube having a tensile strain of at least 0.25 percent when spooled on a reel, and while maintaining an open bore configuration.
A spoolable composite tube having a longitudinal axis and comprising
- a tubular, fluid impervious inner liner,
- a first composite layer enclosing said liner and formed of a helically oriented first set of fibers and of polymeric matrix, said matrix being selected from the group consisting of:
- thermoplastic and thermoset polymers,
- a pressure barrier layer disposed external to and enclosing said composite layer;
- said pressure barrier layer being an impermeable film, and
- wherein said liner and said composite layer and said barrier layer constitute a composite tube having a tensile strain of at least 0.25 percent when spooled on a reel, and while maintaining an open bore configuration.
Dependencies are inferred from the claim text.