The present invention generally provides apparatuses and methods for an improved shunt nozzle which is part of an alternative pathway for a slurry to by-pass an obstruction such as a sand bridge during gravel packing. In one embodiment, the nozzle has a hardened insert that lines a surface of a hole
The present invention generally provides apparatuses and methods for an improved shunt nozzle which is part of an alternative pathway for a slurry to by-pass an obstruction such as a sand bridge during gravel packing. In one embodiment, the nozzle has a hardened insert that lines a surface of a hole in the shunt and seats on a surface of a wall proximate the hole, thereby restraining movement of the insert relative to the shunt for welding an outer jacket to the shunt.
대표청구항▼
The invention claimed is: 1. A nozzle assembly for use in a tool having a hole through a wall of the tool, comprising: an insert having varying diameter configured to at least partially line the hole and seat on an exterior surface of the wall proximate the hole, thereby restraining movement of the
The invention claimed is: 1. A nozzle assembly for use in a tool having a hole through a wall of the tool, comprising: an insert having varying diameter configured to at least partially line the hole and seat on an exterior surface of the wall proximate the hole, thereby restraining movement of the insert relative to the tool; and wherein the hole is not perpendicular to the surface of the wall proximate the hole. 2. The assembly of claim 1, wherein the insert has a bore therethrough and the insert is configured so that a center of the bore will be substantially aligned with a center of the hole when the insert is seated on the wall of the tool. 3. The assembly of claim 1, wherein the insert is constructed from a material substantially harder than a material of the tool. 4. The assembly of claim 1, wherein the insert is constructed from a carbide material. 5. The assembly of claim 1, wherein the tool is an apparatus for use in a wellbore, comprising: a wellscreen assembly configured to permit the flow of fluid therethrough while blocking the flow of particulates; and at least one shunt, having an interior bore and an exterior surface, disposed on the wellscreen assembly, wherein the wall is a wall of the shunt, and wherein the insert at least partially lines the hole and seats on the exterior surface of the wall proximate the hole, thereby restraining movement of the insert relative to the shunt. 6. The assembly of claim 1, wherein the insert comprises: a first portion; and a shoulder portion between the first portion and a lip portion having a diameter smaller than the first portion, wherein the shoulder portion is configured to seat on the surface of the wall proximate the hole. 7. The assembly of claim 6, wherein the lip portion is configured to at least partially line the hole and comprises a tapered portion that is configured to form an interference fit with a surface of the wall defining the hole. 8. The assembly of claim 6, wherein the length of the lip portion substantially corresponds to the thickness of the wall. 9. The assembly of claim 6, wherein the lip portion is configured to at least partially line the hole. 10. The assembly of claim 6, wherein the lip portion comprises a tapered portion that is configured to form an interference fit with a surface of the wall defining the hole. 11. The assembly of claim 6, further comprising a jacket having a bore therethrough and a recessed portion for receiving the first portion of the insert. 12. The assembly of claim 11, further comprising a weld disposed between an outer surface of the jacket and the surface of the wall. 13. The assembly of claim 11, wherein the insert further comprises a second portion extending from the first portion and having a reduced outer diameter with respect to the first portion. 14. The assembly of claim 13, wherein the second portion extends to substantially a terminal end of the jacket distal from the hole. 15. A nozzle assembly for use in a tool having a hole through a wall of the tool, comprising: an insert having a bore therethrough, wherein the insert is configured to mate with the tool so that a center of the bore is held in substantial alignment with a center of the hole. a jacket secured to the tool and surrounding the insert, wherein an outer diameter of the insert defines a shoulder for mating with a corresponding shoulder defined within an inner diameter of the jacket, the insert extending beyond the shoulders in the direction of the tool. 16. The nozzle of claim 15, wherein the jacket concentrically surrounds the insert, and wherein substantially an entire length of an inner diameter of the jacket is lined by the insert. 17. The nozzle of claim 15, the insert extending beyond the shoulders in the direction away from the tool. 18. The assembly of claim 15, wherein the tool is an apparatus for use in a wellbore, comprising: a wellscreen assembly configured to permit the flow of fluid therethrough while blocking the flow of particulates; and at least one shunt, disposed on the wellscreen assembly, wherein the wall is a wall of the shunt, and wherein the insert mates with the tool so that a center of the bore is held in substantial alignment with a center of the hole. 19. The assembly of claim 15, wherein the insert comprises: a first portion; and a shoulder portion between the first portion and a lip portion, wherein the shoulder portion is configured to seat on a surface of the wall proximate the hole. 20. The assembly of claim 19, wherein the lip portion is configured to at least partially line the hole and comprises a tapered portion that is configured to from an interference fit with a surface of the wall defining the hole. 21. The assembly of claim 19, wherein the jacket has a bore therethrough and a recessed portion for receiving the first portion of the insert. 22. An apparatus for use in a wellbore, comprising: a wellscreen assembly configured to permit the flow of fluid therethrough while blocking the flow of particulates; at least one shunt disposed on the wellscreen assembly and having a hole through a wall of the shunt; and a nozzle assembly disposed on the shunt, wherein the nozzle assembly comprises an insert constructed from a material substantially harder than a material of the shunt, the insert comprising: a first portion; and a shoulder portion between the first portion and a lip portion, wherein the shoulder portion seats on the surface of the wall proximate the hole and the lip portion substantially lines the hole. 23. The nozzle of claim 22, further comprising a jacket concentrically surrounding the insert, wherein substantially an entire length of an inner diameter of the jacket is lined by the insert. 24. A method for attaching a nozzle assembly to a tool, comprising: inserting an insert into a hole in a wall of the tool until the insert seats on an exterior surface of the wall proximate the hole, thereby lining at least a portion of the hole with the insert and restraining movement of the insert relative to the tool; and wherein the hole is not perpendicular to the surface of the wall proximate the hole. 25. The method of claim 24, further comprising: disposing a jacket over an outer surface of the insert and seating the jacket on the surface of the wall proximate the hole; and welding the jacket to the surface of the wall. 26. The method of claim 24, wherein the insert comprises a tapered portion and inserting the insert comprises inserting the insert into the hole in the wall of the tool until the tapered portion is press fit with a surface of the wall defining the hole. 27. A dispersal assembly, comprising: at least one shunt having a hole through a wall of the shunt; a nozzle assembly at least partially disposed in the hole through the wall of the shunt, the nozzle assembly comprising an insert seated on the exterior of the shunt; and a jacket surrounding the insert and attached to the shunt. 28. The assembly of claim 27, wherein the jacket concentrically surrounds the insert. 29. The assembly of claim 27, the insert further comprising: a first portion; and a shoulder portion between the first portion and a lip portion, wherein the shoulder portion seats on the exterior surface of the shunt proximate the hole and the lip portion substantially lines the hole. 30. The assembly of claim 29, wherein the insert is constructed from a material substantially harder than a material of the shunt. 31. The assembly of claim 27, wherein the hole is not perpendicular to the wall proximate the hole. 32. The assembly of claim 29, wherein the shoulder portion has a larger outer diameter than the first portion. 33. A method for attaching a nozzle assembly to a tool, comprising: inserting an insert into a hole in a wall of the tool until the insert seats on an exterior surface of the wall proximate the hole, thereby lining at least a portion of the hole with the insert and restraining movement of the insert relative to the tool; disposing a jacket over an outer surface of the insert and seating the jacket on the surface of the wall proximate the hole; and welding the jacket to the surface of the wall. 34. A method for attaching a nozzle assembly to a tool, comprising: inserting an insert into a hole in a wall of the tool until the insert seats on an exterior surface of the wall proximate the hole, thereby lining at least a portion of the hole with the insert and restraining movement of the insert relative to the tool, and wherein the insert comprises a tapered portion and inserting the insert comprises inserting the insert into the hole in the wall of the tool until the tapered portion is press fit with a surface of the wall defining the hole.
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