Composite tubing

Abstract

The present disclosure is directed to embodiments of composite tubing having properties tailored to meet a wide variety of environmental and working conditions. Composite tubes disclosed herein may include one or more of the following layers: a internal liner, a composite layer, a thermal insulation layer, a crush resistant layer, a permeation barrier, buoyancy control layer, a pressure barrier layer, and a wear resistant layer. Grooves may be provided in one or more layers of the composite tube to provide increased axial permeability to the composite tube. A venting system, including vent paths, may be provided in the composite tube to vent fluid that may become trapped within the wall of the composite tube.

1 .- 112 . (canceled)  
   
   
       113 . A composite tube for fluid transport comprising: 
 A composite tube for fluid transport comprising: 
 a substantially fluid impervious inner layer;  
 a permeation barrier layer comprising a plurality of spaced apart holes to allow venting of fluid;  
 a composite layer comprising fibers;  
 a vent path in fluid communication with the inner layer and in fluid communication with an exterior of the composite tube; and  
 a plurality of spaced apart holes to allow venting of fluid.  
   
   
   
       114 . The composite tube of  claim 113 , wherein said permeation barrier comprises a polymer.  
   
   
       115 . The composite tube of  claim 113 , wherein said permeation barrier comprises a thermoplastic polymer.  
   
   
       116 . The composite tube of  claim 113 , wherein said permeation barrier is disposed exterior to said composite layer.  
   
   
       117 . The composite tube of  claim 113 , further including an annular coupling.  
   
   
       118 . The composite tube of  claim 117 , further including a check valve.  
   
   
       119 . The composite tube of  claim 117 , wherein said coupling is a pipe-to-pipe connector.  
   
   
       120 . The composite tube of claim  17 , wherein said coupling is an end connector.  
   
   
       121 . The composite tube of  claim 113 , wherein said composite layer comprises at least one of: glass, aramid, or carbon.  
   
   
       122 . The composite tube of  claim 113 , wherein said composite layer comprises glass fibers embedded in a matrix.  
   
   
       123 . The composite tube of  claim 113 , wherein said composite layer comprises fibers helically oriented relative to the longitudinal axis at an angle of between about 30° and about 70°.  
   
   
       124 . The composite tube of  claim 113 , further including an adhesive layer.  
   
   
       125 . The composite tube of  claim 124 , wherein said adhesive layer comprises a liquid resin.  
   
   
       126 . The composite tube of  claim 125 , wherein said adhesive layer comprises a contact type adhesive.  
   
   
       127 . The composite tube of  113 , wherein said inner layer comprises a thermoplastic.