Perforation gun components and system
Components for a perforation gun system are provided including combinations of components including a self-centralizing charge holder system and a bottom connector that can double as a spacer. Any number of spacers can be used with any number of holders for any desired specific metric or imperial shot density, phase and length gun system.
1. A perforating gun, comprising:
an outer gun carrier;
a charge holder positioned within the outer gun carrier and including at least one shaped charge;
a detonator contained entirely within the outer gun carrier, the detonator including
a detonator body containing detonator components,
a wireless signal-in connector, a wireless through wire connector, and a wireless ground contact connector, and
an insulator electrically isolating the wireless signal-in connector from the wireless through wire connector; and,
a bulkhead, wherein the bulkhead includes a contact pin in wireless electrical contact with the wireless signal-in connector, wherein
at least a portion of the bulkhead is contained within a tandem seal adapter, and the wireless ground contact connector is in wireless electrical contact with the tandem seal adapter.
2. The perforating gun of claim 1 , further comprising a through wire for relaying an electrical signal along a length of the charge holder, wherein the through wire is a wire and the wireless through wire connector is in electrical contact with the through wire.
3. The perforating gun of claim 1 , wherein the charge holder is an injection molded part.
4. The perforating gun of claim 1 , wherein the contact pin transfers an electrical signal from a previous wellbore tool to the wireless signal-in connector.
5. The perforating gun of claim 1 , further comprising a top connector, wherein the detonator is positioned within the top connector.
6. The perforating gun of claim 5 , wherein the top connector is an injection molded part.
7. The perforating gun of claim 1 , wherein the detonator includes a signal-in wire electrically connected to the wireless signal-in connector and a ground wire electrically connected to the wireless ground contact connector.
8. The perforating gun of claim 1 , wherein the detonator is configured for being electrically contactably received within the perforating gun without using a wired electrical connection, and the wireless signal-in connector, the wireless through-wire connector, and the wireless ground contact connector together are configured to replace the wired electrical connection and to complete an electrical connection merely by contact.
9. A modular detonator, comprising:
a detonator body containing detonator components;
a wireless signal-in connector;
a wireless through wire connector;
a wireless ground contact connector;
a signal-in wire electrically connecting at least in part the wireless signal-in connector to at least one of the detonator components; and,
an insulator electrically isolating the wireless signal-in connector from the wireless through wire connector, wherein
the wireless signal-in connector is configured for making wireless electrical contact with an electrical contact of a bulkhead assembly contained at least in part within a tandem seal adapter when the modular detonator is received within a gun assembly of a perforating gun system, and
the wireless ground contact connector is configured for making wireless electrical contact with the tandem seal adapter when the modular detonator is received within the gun assembly of the perforating gun system.
10. The modular detonator of claim 9 , further comprising a detonating cord connecting portion, wherein the detonating cord connecting portion is sized to retain a detonating cord and positioned to energetically couple the detonating cord to the detonator.
11. The modular detonator of claim 9 , the modular detonator further comprising a ground wire electrically connected to the wireless ground contact connector.
12. The modular detonator of claim 9 , wherein the modular detonator is configured for being electrically contactably received within the gun assembly of the perforating gun system without using a wired electrical connection, and the wireless signal-in connector, the wireless through-wire connector, and the wireless ground contact connector together are configured to replace the wired electrical connection and to complete an electrical connection merely by contact.
13. A method for assembling a perforation gun system, comprising:
(a) inserting a charge holder within a hollow interior of an outer gun carrier, wherein the charge holder includes a detonating cord connected to the charge holder and at least one shaped charge;
(b) inserting a top connector into the outer gun carrier adjacent to the charge holder, the top connector comprising a hollow channel;
(c) inserting a detonator into the hollow channel of the top connector, the detonator including
a detonator body containing detonator components,
a wireless signal in connector, a wireless through wire connector, and a wireless ground contact connector, and
an insulator electrically isolating the wireless signal in connector from the wireless through wire connector;
(d) connecting a through wire to the wireless through wire connector;
(e) energetically coupling the detonating cord to the detonator; and,
(f) transporting the perforation gun system to a wellbore site, wherein at least one of steps (a), (b), and (d) is performed before transporting the perforation gun system, and step (c) is performed at the wellbore site.
14. The method of claim 13 , wherein inserting the detonator into the outer gun carrier includes pushing the detonator into the outer gun carrier.
15. The method of claim 13 , wherein the through wire is a wire, and the wireless through wire connector of the detonator is in electrical contact with the through wire.
16. The method of claim 13 , further comprising connecting a bulkhead into the outer gun carrier, wherein the bulkhead includes a contact pin and connecting the bulkhead into the outer gun carrier includes placing the contact pin in wireless electrical contact with the wireless signal in bulkhead connector.
17. The method of claim 13 , wherein one or more of steps (a), (b)(e), and (d) is performed at a factory or a facility that is not a wellbore site.
18. The method of claim 13 , further comprising performing a continuity test to ensure continuity between one or more electrical connections of the perforation gun system.
19. The method of claim 13 , wherein performing steps (a) to (e) a first time with a first set of components completes a first perforating gun segment and the method further comprises:
performing steps (a) to (e) a second time with a second set of components to complete a second perforating gun segment; and
connecting the second perforating gun segment to the first perforating gun segment.
20. The method of claim 13 , wherein the detonator further includes a signal-in wire electrically connecting at least in part the wireless signal-in connector to at least one of the detonator components.