Poly welded annulus test head systems and methods

1. A system comprising:

a pipe segment, wherein the pipe segment comprises tubing that defines a pipe bore through the pipe segment and a fluid conduit in a tubing annulus of the pipe segment, wherein each intermediate layer in the tubing annulus and an outer barrier layer of the pipe segment are cut back relative to an inner barrier layer of the pipe segment; and

a test head assembly secured to the pipe segment, wherein the test head assembly comprises:

barrier material poly welded to the tubing of the pipe segment to facilitate sealing the fluid conduit defined in the tubing annulus of the pipe segment from environmental conditions external to the tubing of the pipe segment, wherein the barrier material is implemented at least in part by:

bending an exposed portion of the inner barrier layer of the pipe segment over each intermediate layer included in the tubing annulus of the pipe segment toward the outer barrier layer of the pipe segment; and

poly welding the inner barrier layer of the pipe segment to the outer barrier layer of the tubing of the pipe segment; and

a fluid port fluidly connected to the fluid conduit defined within the tubing annulus of the pipe segment to enable integrity of the tubing to be tested at least in part by flowing a test fluid into the fluid conduit defined in the tubing annulus of the pipe segment via the fluid port, extracting fluid from the fluid conduit defined in the tubing annulus of the pipe segment via the fluid port, or both.

2. The system of claim 1 , wherein:

the test head assembly comprises a fluid tube embedded within the barrier material of the test head assembly such that the fluid tube extends through the barrier material and is fluidly connected to the fluid conduit defined in the tubing annulus of the pipe segment; and

the fluid port of the test head assembly is secured to the fluid tube embedded within the barrier material of the test head assembly.

3. The system of claim 1 , wherein:

an opening is formed through an outer barrier layer of the tubing of the pipe segment such that the opening is fluidly connected to the fluid conduit defined in the tubing annulus of the pipe segment; and

the fluid port of the test head assembly is secured to the opening formed through the outer barrier layer of the tubing of the pipe segment.

4. The system of claim 1 , wherein the barrier material of the test head assembly is implemented at least in part by melting supplemental barrier material onto the tubing of the pipe segment.

5. A method of deploying a test head assembly at a pipe segment to facilitate determining integrity of the pipe segment, comprising:

poly welding barrier material of an inner barrier layer of the pipe segment, an outer barrier layer of the pipe segment, or both to facilitate sealing an open end of free space defined within a tubing annulus of the pipe segment from environmental conditions external to tubing of the pipe segment at least in part by:

cutting back each intermediate layer included in the tubing annulus of the pipe segment and the outer barrier layer of the pipe segment relative to the inner barrier layer of the pipe segment;

bending an exposed portion of the inner barrier layer out over each intermediate layer included in the tubing annulus toward the outer barrier layer of the pipe segment; and

poly welding the inner barrier layer of the pipe segment to the outer barrier layer of the pipe segment; and

fluidly connecting a fluid port to the free space defined within the tubing annulus of the pipe segment to enable integrity of the pipe segment to be tested at least in part by flowing a test fluid into the free space defined in the tubing annulus of the pipe segment via the fluid port, extracting fluid from the free space defined in the tubing annulus of the pipe segment via the fluid port, or both.

6. The method of claim 5 , wherein poly welding the barrier material of the inner barrier layer of the pipe segment, the outer barrier layer of the pipe segment, or both comprises poly welding supplemental barrier material to the inner barrier layer of the pipe segment, the outer barrier layer of the pipe segment, or both.

7. The method of claim 6 , wherein the supplemental barrier material comprises a barrier material ring.

8. The method of claim 5 , comprising inserting a coned bore plug into a pipe bore of the pipe segment before poly welding barrier material of the inner barrier layer, the outer barrier layer, or both to facilitate circularizing tubing of the pipe segment.

9. The method of claim 5 , wherein fluidly connecting the fluid port to the free space defined within the tubing annulus of the pipe segment comprises securing the fluid port to a fluid tube that is embedded within poly welded barrier material of the test head assembly.

10. The method of claim 5 , wherein fluidly connecting the fluid port to the free space defined within the tubing annulus of the pipe segment comprises:

forming a hole through the outer barrier layer of the pipe segment such that the hole is fluidly connected to the free space defined within the tubing annulus of the pipe segment; and

securing the fluid port to the hole via a clamp that wraps circumferentially around the outer barrier layer of the pipe segment.

11. A system comprising:

a pipe segment, wherein the pipe segment comprises tubing that defines a pipe bore through the pipe segment and a fluid conduit in a tubing annulus of the pipe segment; and

a test head assembly secured to the pipe segment, wherein the test head assembly comprises:

barrier material poly welded to the tubing of the pipe segment to facilitate sealing the fluid conduit defined in the tubing annulus of the pipe segment from environmental conditions external to the tubing of the pipe segment, wherein the barrier material comprises a barrier material ring poly welded to an outer barrier layer of the tubing of the pipe segment;

a fluid port fluidly connected to the fluid conduit defined within the tubing annulus of the pipe segment to enable integrity of the tubing to be tested at least in part by flowing a test fluid into the fluid conduit defined in the tubing annulus of the pipe segment via the fluid port, extracting fluid from the fluid conduit defined in the tubing annulus of the pipe segment via the fluid port, or both; and

a coned bore plug inserted into an open end of the pipe bore of the pipe segment to facilitate circularizing the tubing of the pipe segment and aligning the barrier material ring with the tubing of the pipe segment, wherein:

the coned bore plug is integrated with the barrier material ring such that the barrier material ring is implemented circumferentially around the coned bore plug; and

a seal is formed between an outer surface of the coned bore plug and an inner surface of the tubing of the pipe segment when the coned bore plug is inserted into the pipe bore of the pipe segment to obviate polywelding the barrier material ring to an inner barrier layer of the tubing of the pipe segment.