Select fire switch form factor system and method
View Patent ↗A wellbore select fire switch retaining member system and method with an integrated through wire and ground wire in a switch sub. The system/method includes a retaining member that has a form factor acceptable by a conventional switch sub. The retaining member incorporates an electrical connection to the center pin of a pressure switch. The system further includes a secondary piston aligned with a piston in the switch (switch piston) so that external pressure is fully acted upon the entire switch piston creating a reliable switch connection. Another system includes an integrated retaining member and switch module having a form factor compatible with existing switch subs. The integrated module inputs include a ground wire and a through wire and the outputs include a ground wire, through wire and an arming wire.
1. A select fire switch system for use in a downhole tool comprising a select fire switch retaining member and a switch positioned in a switch sub; said switch retaining member comprising a through wire link, a vent port; said through wire link integrated into said switch retaining member such that said through wire link makes an operative electrical connection to a post of said switch; each of said conducting wires configured to make operative electrical connection to said switch; said vent port configured to enable pressure communication to a primary piston in said switch; whereby when a pressure acts through said vent port on said primary piston, said primary piston slides such that said switch is actuated.
2. A select fire switch system for use in a downhole tool comprising a select fire switch retaining member and a switch positioned in a switch sub; said switch retaining member comprising a through wire link and a secondary piston; said through wire link integrated into said switch retaining member such that said through wire link makes an operative electrical connection to a post of said switch; said secondary piston is configured to slide in a bore in said switch retaining member; whereby when a pressure acts on said secondary piston, said secondary piston slides and activates a primary piston in said switch, and said primary piston slides such that said switch is actuated.
3. The select fire switch system of claim 2 further comprises a plurality of conducting wires; each of said conducting wires is configured to make operative electrical connection to said switch.
4. The select fire switch system of claim 2 wherein said switch retaining member has a form factor that is acceptable by said switch.
5. The select fire switch system of claim 2 further comprises a retaining head.
6. The select fire switch system of claim 2 further comprises a threading member, said threading member is configured to attach said switch retaining member to a switch sub.
7. The select fire switch system of claim 2 wherein said through wire link is further connected to an external through wire member; said external through wire member is configured to be connected to a perforating gun.
8. The select fire switch system of claim 2 wherein said ground wire link is further connected to an external ground wire member.
9. The select fire switch system of claim 2 wherein said switch retaining member and said switch are integrated into a unified switch; said unified switch is configured to be positioned in a switch sub for use with a perforation gun.
10. The select fire switch system of claim 2 wherein said activating switch retaining member further comprises a ground wire link; said ground wire link integrated to a body of said switch retaining member.
11. A select fire switch system for use in a wellbore casing comprising:
(a) retaining head;
(b) threading member;
(c) switch body;
(d) activating switch member;
(e) plurality of input links; and
(f) plurality of output links;
wherein
said threading member is configured to be coupled to a switch sub;
said switch body is configured to have a form factor acceptable by said switch sub;
said activating switch member is configured to connect one of said plurality of inputs to one of said plurality of outputs;
said plurality of input links are configured for operative connections to a perforating gun; and
said plurality of output links are configured for operative connections to a perforating gun.
12. The select fire switch system of claim 11 whereby, said switch is activated through a signal transmitted to at least one of said plural inputs.
13. The select fire switch system of claim 11 wherein said switch body is configured with a pressure isolation barrier.
14. The select fire switch system of claim 11 further comprises a detonator, said detonator is configured to be in operative electric connection with said switch activating member.
15. The select fire switch system of claim 11 further comprises a switch port; said switch port is configured to sense environmental conditions.
16. The select fire switch system of claim 11 further comprises a switch port; said switch port is configured to sense pressure conditions.
17. The select fire switch system of claim 11 further comprises a switch port; said switch port is configured to sense temperature conditions.
18. The select fire switch system of claim 11 wherein said activating switch member is a pressure switch; said pressure switch comprises a primary piston; said primary piston is activated through pressure communicated via a vent port positioned in said retaining head.
19. The select fire switch system of claim 11 wherein said activating switch member is an electronic switch; said electronic switch is configured to be activated by one of said plurality of input links.