Setting tool igniter system and method
View Patent ↗There is a downhole tool that includes a switch sub having a bore and a bulkhead extending along a longitudinal axis, wherein the bulkhead has a bulkhead bore that fluidly communicates with (i) the bore and (ii) an outside of the switch sub; and an igniter system located inside the bulkhead. The igniter system is configured to ignite an energetic material.
1. A downhole tool comprising:
a switch sub having a bore and a bulkhead extending along a longitudinal axis, wherein the bulkhead has a bulkhead bore that fluidly communicates with (i) the bore and (ii) an outside of the switch sub; and
an igniter system located inside the bulkhead and having a housing that extends partially inside the bulkhead and partially inside a bore of an adapter,
wherein the adapter attaches to the switch sub, and
wherein the igniter system is configured to ignite an energetic material.
2. The downhole tool of claim 1 , wherein the entire igniter system is located within the switch sub.
3. The downhole tool of claim 1 , further comprising:
an adapter that connects the switch sub to a setting tool,
wherein the igniter system is located partially in the switch sub and partially in the adapter.
4. The downhole tool of claim 3 , wherein no part of the igniter system is located inside the setting tool.
5. The downhole tool of claim 4 , further comprising:
a plug connected to the setting tool,
wherein the plug is set by the setting tool to close a well.
6. The downhole tool of claim 1 , wherein the igniter system comprises:
an igniter housing the energetic material and configured to ignite the energetic material;
a first igniter housing; and
a second igniter housing that connects to the first housing,
wherein the igniter is fully contained inside the first and second igniter housings and the first and second igniter housings fit an-inside of the bulkhead.
7. The downhole tool of claim 6 , wherein the first and second igniter housings are made out of aluminum.
8. The downhole tool of claim 6 , wherein the igniter system further comprises:
a seal element that insulates an interior of the first igniter housing from an interior of the second igniter housing.
9. The downhole tool of claim 8 , wherein the seal element has a glass or metal composition.
10. The downhole tool of claim 8 , wherein a ground wire and a signal wire of the igniter extend from the second igniter housing to the bore of the switch sub.
11. The downhole tool of claim 1 , further comprising:
a switch located inside the bore of the switch sub,
wherein the igniter system is electrically connected to the switch sub.
12. The downhole tool of claim 1 , wherein the igniter system further comprises:
a first thread adapter that attaches to an inside of the housing; and
an igniter that attaches to an inside of the first thread adapter.
13. The downhole tool of claim 12 , wherein the igniter system further comprises:
a second thread adapter that attaches to the inside of the housing,
wherein the second thread adapter abuts the first thread adapter.
14. The downhole tool of claim 13 , wherein the second thread adapter, the first thread adapter and the igniter are located in this order inside the housing.
15. The downhole tool of claim 13 , wherein the igniter system further comprises:
a nut that slides over a part of the housing for attaching to the switch sub to hold the igniter system within the switch sub.
16. The downhole tool of claim 1 , wherein a setting tool for setting a plug is being directly attached to an end of the switch sub where the igniter system is located.
17. The downhole tool of claim 1 , wherein a setting tool for setting a plug houses a power charge to be ignited by the energetic material, and wherein the energetic material is partially located within the switch sub.
18. A downhole tool comprising:
a switch sub configured to be connected between (i) a perforating gun assembly and (ii) an adapter for a setting tool; and
an igniter system located inside a bulkhead of the switch sub, the igniter system haying a housing that extends partially inside the bulkhead and partially inside a bore of the adapter,
wherein the adapter attaches to the switch sub, and
wherein the igniter system is configured to ignite an energetic material.
19. The downhole tool of claim 18 , wherein the igniter system is located within a bulkhead bore formed in the bulkhead of the switch sub.
20. The downhole tool of claim 19 , wherein the igniter system is entirely located inside the switch sub.
21. A method for manufacturing an igniter system for a downhole tool, the method comprising:
placing the igniter system inside a housing;
placing the housing in a bulkhead of a switch sub, the switch sub having a bore, and the bore and the bulkhead extending along a longitudinal axis, wherein a bulkhead bore of the bulkhead fluidly communicates with (i) the bore and (ii) an outside of the switch sub; and
attaching a nut to an inside wall of the switch sub to hold the igniter system within the bulkhead bore,
wherein the igniter system is configured to ignite an energetic material,
wherein the housing of the igniter system extends partially inside the bulkhead and partially inside a bore of an adapter, and
wherein the adapter attaches to the switch sub.
22. The method of claim 21 , further comprising:
electrically connecting an igniter of the igniter system to a switch located inside the switch sub,
wherein the switch is configured to control the igniter and a detonator.
23. The method of claim 21 , wherein the entire igniter system is located within the switch sub.
24. The method of claim 21 , further comprising:
sealing around the igniter system.