Integrated composite seals for ram body

Abstract

A seal in a ram body includes an integrated structure of a first composite material having at least one channel and a second composite material within such at least one channel, which in turn allows movement therethrough of such a second composite material during energizing of a ram body and which allows return of such a second composite material to, at least in part, an integrated structure of such a seal so that such a seal remains reusable.

What is claimed is: 
     
         1 . A seal for a ram body, the seal comprising an integrated structure of a first composite material and a second composite material, the first composite material comprising at least one channel and comprising the second composite material within the at least one channel, the at least one channel to allow movement therethrough of the second composite material during energizing of the ram body and to allow return of the second composite material to, at least in part, the integrated structure. 
     
     
         2 . The seal of  claim 1 , further comprising:
 a first stiffness for the first composite material and a second stiffness for the second composite material, the first stiffness being more than the second stiffness.   
     
     
         3 . The seal of  claim 1 , further comprising:
 the at least one channel to extend through a side of the first composite material to allow flow of the second composite material from a side packer section to a top seal section of the seal and to allow the return of the second composite material to, at least in part, the integrated structure.   
     
     
         4 . The seal of  claim 1 , further comprising:
 the at least one channel to extend through a bottom of the first composite material to allow flow of the second composite material from a bottom side packer section to a top seal section of the seal and to allow the return of the second composite material to, at least in part, the integrated structure.   
     
     
         5 . The seal of  claim 1 , further comprising:
 the at least one channel comprising a first channel to extend through a bottom of the first composite material and through a side of the first composite material to allow flow of the second composite material from a bottom side packer section to a top seal section of the seal and to allow the return of the second composite material to, at least in part, the integrated structure.   
     
     
         6 . The seal of  claim 5 , further comprising:
 a bottom side packer section coupled to a top seal section of the seal via a channel section to allow the second composite material from the bottom side packer section to flow and to return to, at least in part, the integrated structure.   
     
     
         7 . The seal of  claim 1 , further comprising:
 the at least one channel to comprise a single elongated bottom section to extend along a width of the integrated structure and to comprise a margin section of the first composite material to encompass sides of a top side packer section therein.   
     
     
         8 . The seal of  claim 1 , further comprising:
 the at least one channel of the first composite material to comprise a multiple bottom channels to extend through the integrated structure and to comprise margin sections to circumvent the multiple bottom channels, the multiple bottom channels to encompass sides of at least one top side packer section therein.   
     
     
         9 . The seal of  claim 1 , further comprising:
 a second integrated structure to abut the integrated structure during or after the energizing of the ram body, the second integrated structure to support the movement of the second composite material of the integrated structure through the first composite material.   
     
     
         10 . The seal of  claim 1 , further comprising:
 the integrated structure to enable reuse of the seal for at least a second energizing of the ram body based in part on the return of the second composite material to, at least in part, the integrated structure.   
     
     
         11 . The seal of  claim 1 , further comprising:
 a high modulus material as the first composite material, the high modulus material comprising one or more of:
 a tensile stress, at 50% strain, of 2500 to 4500 pounds per square inch (psi); 
 a hardness of 90 to 105 Shore A on a Shore Hardness Scale; and 
 a polymer comprising two or more of nitrile butadiene rubber (NBR), hydrogenated nitrile butadiene rubber (HNBR), fluoroelastomer (FKM), neoprene rubber (CR), natural rubber (NR), epichlorohydrin rubber, polyurethane rubber, hydrogenated butadiene rubber, or fluoroelastomer. 
   
     
     
         12 . The seal of  claim 1 , further comprising:
 a low modulus material as the second composite material, the low modulus material comprising one or more of:
 a tensile stress, at 50% strain, of 500 to 1800 psi; 
 a hardness of 65 to 85 Shore A on the Shore Hardness Scale; 
 a polymer comprising two or more of nitrile butadiene rubber (NBR), hydrogenated nitrile butadiene rubber (HNBR), fluoroelastomer (FKM), neoprene rubber (CR), natural rubber (NR), epichlorohydrin rubber, polyurethane rubber, more specifically nitrile butadiene rubber, hydrogenated butadiene rubber, or a fluoroelastomer; and 
 a nitrogen-substituted aromatic and carbon black adhesive system, with 20-30% solids by weight. 
   
     
     
         13 . A method for a seal to be applied to a ram body, the method comprising:
 forming an integrated structure of a first composite material and a second composite material so that the first composite material comprises at least one channel and comprises the second composite material within the at least one channel; and   enabling movement, within the at least one channel, for the second composite material during energizing of the ram body, the at least one channel to enable the second composite material to return to, at least in part, the integrated structure.   
     
     
         14 . The method of  claim 13 , further comprising:
 enabling a first stiffness for the first composite material; and   enabling a second stiffness for the second composite material, the first stiffness being more than the second stiffness.   
     
     
         15 . The method of  claim 13 , further comprising:
 enabling the at least one channel to extend through a side of the first composite material to allow flow of the second composite material from a side packer section to a top seal section of the seal; and   enabling, using the at least one channel, the return of the second composite material to, at least in part, the integrated structure.   
     
     
         16 . The method of  claim 13 , further comprising:
 enabling the at least one channel to extend through a bottom of the first composite material to allow flow of the second composite material from a bottom side packer section to a top seal section of the seal; and   enabling, using the at least one channel, the return of the second composite material to, at least in part, the integrated structure.   
     
     
         17 . The method of  claim 13 , further comprising:
 enabling the at least one channel to comprise a single elongated bottom section extending along a width of the integrated structure; and   enabling the at least one channel to comprise a margin section of the first composite material to encompass sides of a top side packer section therein.   
     
     
         18 . A method for sealing of a ram body, the method comprising:
 providing a seal comprising an integrated structure of a first composite material and a second composite material in the ram body, the integrated structure so that the first composite material comprises at least one channel and comprises the second composite material within the at least one channel; and   energizing the ram body; and   enabling movement, within the at least one channel, for the second composite material during the energizing of the ram body, the at least one channel to enable the second composite material to returns to, at least in part, the integrated structure.   
     
     
         19 . The method of  claim 18 , further comprising:
 providing a second integrated structure in the ram body, the second integrated structure to abut the integrated structure during or after the energizing of the ram body; and   enabling the second integrated structure to support the movement of the second composite material of the integrated structure through the first composite material.   
     
     
         20 . The method of  claim 18 , further comprising:
 deenergizing the ram body; and   reusing the integrated structure of the seal for at least a second energizing of the ram body based in part on the return of the second composite material to, at least in part, the integrated structure following the deenergizing of the ram body.