Perforation gun components and system

Patent metadata

Field	Value
Publication number	US-10844697-B2
Application number	US-201916585790-A
Country	US
Kind code	B2
Filing date	Sep 27, 2019
Priority date	Jul 18, 2013
Publication date	Nov 24, 2020
Grant date	Nov 24, 2020

Abstract

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.

First claim

What is claimed is:

1. An electrical connection assembly for establishing an electrical connection in a tool string, the electrical connection assembly comprising:
a tandem seal adapter having a first end, a second end and a bore that extends from the first end to the second end and entirely through the tandem seal adapter;
a perforation gun system comprising a first outer gun carrier, a shaped charge, and a first detonator, wherein the shaped charge and the first detonator are positioned within the first outer gun carrier, wherein the first outer gun carrier is connected to the first end of the tandem seal adapter; and
a pressure bulkhead having an outer surface, a first end and a second end, the outer surface of the pressure bulkhead is sealingly received in the bore of the tandem seal adapter, the pressure bulkhead also having a pin connector assembly extending through the pressure bulkhead from a first pin connector end to a second pin connector end, and configured to relay an electrical signal from the first end of the pressure bulkhead to the second end of the pressure bulkhead, wherein the first pin connector end extends beyond the first end of the pressure bulkhead and the second pin connector end extends beyond the second end of the pressure bulkhead, wherein
the first detonator is in electrical communication with the pin connector assembly, wherein the tandem seal adapter and the pressure bulkhead are configured to provide a seal between the detonator and an environment on the second end of the tandem seal adapter.

2. The electrical connection assembly of claim 1 , wherein it is not possible to interrupt the electrical signal from the first pin connector end to the second pin connector end.

3. The electrical connection assembly of claim 1 , wherein the pin connector assembly further comprises:
a spring loaded contact pin.

4. The electrical connection assembly of claim 1 , wherein the pin connector assembly further comprises:
a first spring loaded contact pin, wherein a portion of the first spring loaded contact pin extends from a body of the pressure bulkhead adjacent the first end of the tandem seal adapter.

5. The electrical connection assembly of claim 4 , wherein the pin connector assembly further comprises:
a second spring loaded contact pin, wherein a portion of the second spring loaded contact pin extends from a body of the pressure bulkhead adjacent the second end of the tandem seal adapter.

6. The electrical connection assembly of claim 1 , wherein the pin connector assembly comprises:
a first contact pin having a first radius and a first pin head portion, wherein the first pin head portion has a radius that is greater than the first radius; and
a second contact pin having a second radius and a second pin head portion, wherein the second pin head portion has a radius that is greater than the second radius, wherein
the first pin head portion and the second pin head portion are each positioned within the pressure bulkhead, and
a biasing member is positioned within the pressure bulkhead and configured for exerting a force on the first pin head portion or the second pin head portion.

7. The electrical connection assembly of claim 1 , wherein the pin connector assembly further comprises:
a first contact pin;
a second contact pin;
an inner body positioned between the first contact pin on one end and the second contact pin on an opposite end; and
a first biasing member and a second biasing member positioned within the pressure bulkhead between the first contact pin on the one end and the second contact pin on the opposite end, each of the first biasing member and the second biasing member exerting a force on the inner body.

8. The electrical connection assembly of claim 1 , further comprising a spring-loaded electrical connection positioned adjacent to the tandem seal adapter.

9. The electrical connection assembly of claim 1 , further comprising a second outer gun carrier connected to the second end of the tandem seal adapter and a bulkhead connector element positioned within the second outer gun carrier, wherein the second pin connector end is in wireless electrical contact with the bulkhead connector element.

10. The electrical connection assembly of claim 9 , wherein the bulkhead connector element is in electrical communication with a second detonator positioned within the second outer gun carrier.

11. The electrical connection assembly of claim 10 , wherein the first detonator includes a through wire connector element and a ground connector element.

12. The electrical connection assembly of claim 10 , wherein the bulkhead connector element is a portion of a detonator head portion of the second detonator.

13. The electrical connection assembly of claim 1 , wherein the pressure bulkhead extends at least from the first end to the second end of the tandem seal adapter.

14. An electrical connection assembly for establishing an electrical connection with a detonator in a downhole tool, the electrical connection assembly comprising:
a tandem seal adapter having a first end, a second end and a bore that extends through the tandem seal adapter from the first end to the second end;
a pressure bulkhead having a body extending between a first end and a second end, the body of the pressure bulkhead is sealingly received in the bore of the tandem seal adapter, the pressure bulkhead also including a pin connector assembly configured to relay an electrical signal between the first end of the pressure bulkhead and the second end of the pressure bulkhead; and
a set of inner components within the downhole tool that includes the detonator, the detonator being electrically connected to the pin connector assembly adjacent the inner end of the pressure bulkhead, wherein the tandem seal adapter and the pressure bulkhead are configured to seal the inner components from an environment adjacent the second end of the tandem seal adapter,

wherein the pin connector assembly includes a spring loaded contact pin, a portion of the spring loaded contact pin extends from the bulkhead body.

15. The electrical connection assembly of claim 14 , wherein it is not possible to interrupt the electrical signal between the first end and the second end of the pressure bulkhead.

16. The electrical connection assembly of claim 14 , wherein the detonator comprises:
a detonator head that includes a signal-in connector element configured to be contacted by an inner contact pin of the pin connector assembly.

17. The electrical connection assembly of claim 16 , further wherein the detonator head includes a through wire connector element and a ground connector element.

18. The electrical connection assembly of claim 16 , wherein the detonator further includes a detonator body extending from the detonator head and further wherein the detonator is not physically joined to the electrical connection assembly.

19. The electrical connection assembly of claim 14 , wherein the pin connector assembly further comprises:
an inner contact pin having a first radius, wherein
the spring loaded contact pin has a second radius, and
each of the inner contact pin and the spring loaded contact pin having a pin head portion positioned within the pressure bulkhead, each pin head portion having a radius greater than the first radius and the second radius; and
a biasing member positioned within the pressure bulkhead and abutting the pin head portion of the inner contact pin.

20. The electrical connection assembly of claim 19 , wherein the bia

Assignees

• DynaEnergetics Europe GmbH

Inventors

• Preiss Frank Haron
• Mcnelis Liam
• Mulhern Eric
• Scharf Thilo
• Parks David C

Classifications

• F42D1/02 Primary

  Arranging blasting cartridges to form an assembly (adaptation of blasting cartridges therefor F42B3/02) · CPC title

• F42D1/043

  Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B3/26) · CPC title

• E21B43/1185 Primary

  Ignition systems · CPC title

• F42C19/06

  Electric contact parts specially adapted for use with electric fuzes {(switches operated by change of speed H01H35/06; switches operated by change of acceleration, e.g. shock or vibration, inertia switches H01H35/14; fluid-pressure-operated switches H01H35/24)} · CPC title

• F42D1/04

  Arrangements for ignition {(ignition systems for shaped charge perforators E21B43/1185; ignition devices for seismic energy generators G01V1/06)} · CPC title