Swaged pipe fitting systems and methods

Abstract

Techniques for implementing and/or installing a system including pipe segment tubing and a swaged pipe fitting secured to the pipe segment tubing. The pipe segment tubing includes a carcass layer, an internal pressure sheath layer disposed around the carcass layer, a reinforcement layer disposed around the internal pressure sheath layer, and an outer sheath layer disposed around the reinforcement layer. The swaged pipe fitting includes a fitting body that defines a bore, an internal pressure sheath seal that seals the internal pressure sheath layer of the pipe segment tubing within the swaged pipe fitting, and a fitting jacket secured to the fitting body, in which the fitting jacket is conformally deformed around the pipe segment tubing to anchor the reinforcement layer of the pipe segment tubing in the swaged pipe fitting.

1 .- 20 . (canceled) 
     
     
         21 . A pipeline system comprising:
 a pipe segment, wherein tubing of the pipe segment comprises:
 an internal pressure sheath layer that defines a pipe bore; 
 an intermediate layer formed around the internal pressure sheath layer; and 
 an outer sheath layer formed around the intermediate layer; and 
   a swaged pipe fitting configured to be secured to the pipe segment, wherein the swaged pipe fitting comprises:
 a fitting body configured to be disposed circumferentially around the internal pressure sheath layer of the pipe segment; 
 a fitting jacket secured to the fitting body, wherein the fitting jacket is configured to be conformally deformed around the tubing of the pipe segment such that the fitting jacket directly and circumferentially engages the outer sheath layer of the pipe segment; 
 a support cylinder configured to be axially inserted into the pipe bore of the pipe segment under the internal pressure sheath layer to facilitate supporting the tubing of the pipe segment while the fitting jacket is being conformally deformed therearound; and 
 an internal pressure sheath seal configured to be radially compressed against the internal pressure sheath layer of the pipe segment. 
   
     
     
         22 . The pipeline system of  claim 21 , wherein:
 the pipe segment comprises a carcass layer formed under the internal pressure sheath layer; and   the swaged pipe fitting comprises a carcass isolating ring configured to facilitate electrically isolating the carcass layer of the pipe segment from a remainder of the swaged pipe fitting.   
     
     
         23 . The pipeline system of  claim 21 , wherein the swaged pipe fitting comprises:
 a fitting connector configured to be secured to the fitting body to enable the swaged pipe fitting to be connected to another pipeline component; and   a face seal configured to be compressed between the fitting body and the fitting connector.   
     
     
         24 . The pipeline system of  claim 23 , wherein the internal pressure sheath seal of the swaged pipe fitting is configured to be radially compressed against the internal pressure sheath layer of the pipe segment due to being axially compressed between the fitting connector and the fitting body. 
     
     
         25 . The pipeline system of  claim 24 , wherein:
 the intermediate layer of the pipe segment defines a fluid conduit within a tubing annulus of the pipe segment; and   the swaged pipe fitting comprises:
 a fluid path defined in the fitting body such that the fluid path is configured to be fluidly connected to the fluid conduit in the tubing annulus of the pipe segment; and 
 a vent valve fluidly configured to be fluidly connected to the fluid path defined in the fitting body. 
   
     
     
         26 . A system comprising a swaged pipe fitting configured to be secured to a pipe segment, wherein the swaged pipe fitting comprises:
 a fitting body configured to be disposed circumferentially around a carcass layer of the pipe segment and an internal pressure sheath layer of the pipe segment that is formed around the carcass layer to define a pipe bore;   an internal pressure sheath seal configured to be compressed against the internal pressure sheath layer of the pipe segment to facilitate sealing the internal pressure sheath layer within the swaged pipe fitting;   a carcass isolating ring configured to facilitate electrically isolating the carcass layer of the pipe segment in the swaged pipe fitting; and   a fitting jacket secured to the fitting body, wherein the fitting jacket is configured to be conformally deformed directly and circumferentially against an outer sheath layer of the pipe segment to facilitate securing a reinforcement layer of the pipe segment that is formed between the internal pressure sheath layer and the outer sheath layer of the pipe segment within the swage pipe fitting and sealing the outer sheath layer of the pipe segment within the swaged pipe fitting.   
     
     
         27 . The system of  claim 26 , wherein the swaged pipe fitting comprises:
 a fitting connector configured to be secured to the fitting body to enable the swaged pipe fitting to be connected to another pipeline component, wherein the internal pressure sheath seal is configured to be radially compressed against the internal pressure sheath layer of the pipe segment due to being axially compressed between the fitting connector and the fitting body; and   a face seal configured to be compressed between the fitting body and the fitting connector.   
     
     
         28 . The system of  claim 26 , wherein the swaged pipe fitting comprises:
 a fluid path defined in the fitting body such that the fluid path is configured to be fluidly connected to a fluid conduit defined by the reinforcement layer in a tubing annulus of the pipe segment; and   a vent valve fluidly configured to be fluidly connected to the fluid path defined in the fitting body.   
     
     
         29 . The system of  claim 26 , wherein the swaged pipe fitting comprises a support cylinder configured to be axially inserted into the pipe bore of the pipe segment under the internal pressure sheath layer to facilitate supporting tubing of the pipe segment at least while the fitting jacket is being conformally deformed therearound. 
     
     
         30 . The system of  claim 26 , comprising a support cylinder tool configured to be:
 axially inserted into the pipe bore of the pipe segment while in a contracted state;   transitioned from the contracted state to an expanded state such that the support cylinder tool is radially expanded against tubing of the pipe segment to facilitate supporting the tubing of the pipe segment while the fitting jacket is being conformally deformed therearound;   transitioned from the expanded state back to the contracted state such that the support cylinder tool radially contracts to facilitate disengaging the support cylinder tool from the tubing of the pipe segment; and   withdrawn from the pipe bore of the pipe segment while in the contracted state.   
     
     
         31 . The system of  claim 30 , wherein the support cylinder tool comprises:
 a threaded shaft;   a stationary collar disposed around the threaded shaft, wherein the stationary collar comprises a first conical outer surface;   an outer stationary nut and an inner stationary nut disposed around the threaded shaft on either side of the stationary collar to hold the stationary collar in place on the threaded shaft;   a plurality of support cylinder sections secured around the threaded shaft, wherein the plurality of support cylinder sections comprises a first conical inner surface configured to slide along the first conical outer surface of the stationary collar and a second conical inner surface;   an activation collar disposed around the threaded shaft, wherein the activation collar comprises a second conical outer surface configured to slide along the second conical inner surface of the plurality of support cylinder sections; and   an activation nut secured around the threaded shaft.   
     
     
         32 . The system of  claim 30 , wherein the swaged pipe fitting does not include a permanent cylinder disposed within the pipe bore of the pipe segment. 
     
     
         33 . A system comprising a swaged pipe fitting configured to be secured to a pipe segment, wherein the swaged pipe fitting comprises:
 a fitting body configured to be disposed circumferentially around a carcass layer of the pipe segment and an internal pressure sheath layer of the pipe segment that is formed around the carcass layer to define a pipe bore;   a fitting connector configured to be secured to the fitting body to enable the swaged pipe fitting to be connected to another pipeline component;   a face seal configured to be compressed between the fitting body and the fitting connector;   an internal pressure sheath seal configured to be compressed against the internal pressure sheath layer of the pipe segment to facilitate sealing the internal pressure sheath layer within the swaged pipe fitting; and   a fitting jacket secured to the fitting body, wherein the fitting jacket is configured to be conformally deformed directly and circumferentially against an outer sheath layer of the pipe segment to facilitate securing a reinforcement layer of the pipe segment that is formed between the internal pressure sheath layer and the outer sheath layer of the pipe segment within the swage pipe fitting and sealing the outer sheath layer of the pipe segment within the swaged pipe fitting.   
     
     
         34 . The system of  claim 33 , wherein the swaged pipe fitting comprises a carcass isolating ring configured to facilitate electrically isolating the carcass layer of the pipe segment in the swaged pipe fitting 
     
     
         35 . The system of  claim 33 , wherein the swaged pipe fitting comprise:
 a fluid path defined in the fitting body such that the fluid path is configured to be fluidly connected to a fluid conduit defined by the reinforcement layer in a tubing annulus of the pipe segment; and   a vent valve configured to be fluidly connected to the fluid path defined in the fitting body.   
     
     
         36 . The system of  claim 33 , wherein the internal pressure sheath seal of the swaged pipe fitting is configured to be radially compressed against the internal pressure sheath layer of the pipe segment due to being axially compressed between fitting connector and the fitting body. 
     
     
         37 . The system of  claim 33 , wherein the swaged pipe fitting comprises a support cylinder configured to be axially inserted into the pipe bore of the pipe segment under the internal pressure sheath layer to facilitate supporting tubing of the pipe segment at least while the fitting jacket is being conformally deformed therearound. 
     
     
         38 . The system of  claim 33 , comprising a support cylinder tool configured to be:
 axially inserted into the pipe bore of the pipe segment while in a contracted state;   transitioned from the contracted state to an expanded state such that the support cylinder tool is radially expanded against tubing of the pipe segment to facilitate supporting the tubing of the pipe segment while the fitting jacket is being conformally deformed therearound;   transitioned from the expanded state back to the contracted state such that the support cylinder tool radially contracts to facilitate disengaging the support cylinder tool from the tubing of the pipe segment; and   withdrawn from the pipe bore of the pipe segment while in the contracted state.   
     
     
         39 . The system of  claim 38 , wherein the support cylinder tool comprises:
 a threaded shaft;   a stationary collar disposed around the threaded shaft, wherein the stationary collar comprises a first conical outer surface;   an outer stationary nut and an inner stationary nut disposed around the threaded shaft on either side of the stationary collar to hold the stationary collar in place on the threaded shaft;   a plurality of support cylinder sections secured around the threaded shaft, wherein the plurality of support cylinder sections comprises a first conical inner surface configured to slide along the first conical outer surface of the stationary collar and a second conical inner surface;   an activation collar disposed around the threaded shaft, wherein the activation collar comprises a second conical outer surface configured to slide along the second conical inner surface of the plurality of support cylinder sections; and   an activation nut secured around the threaded shaft.   
     
     
         40 . The system of  claim 33 , wherein the swaged pipe fitting does not include a permanent cylinder disposed within the pipe bore of the pipe segment.