Initiator head assembly

Patent metadata

Field	Value
Publication number	US-11078764-B2
Application number	US-202016860269-A
Country	US
Kind code	B2
Filing date	Apr 28, 2020
Priority date	May 5, 2014
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

An initiator head assembly may include a body and an electrical contact component positioned proximal to the body. The body may include a head extending from a base, and a platform extending from the head, and the body may be injection molded as a unitary component. The electrical contact component may include a line-in portion positioned proximal to the platform and a ground portion positioned proximal to the head. The electrical contact component may be formed integrally with the body such that it is anchored in a fixed position in the body. An initiator for a perforating gun assembly may include the initiator head assembly and a shell coupled to the initiator head assembly.

First claim

What is claimed is:

1. An initiator configured for being electrically contactably received within a perforating gun assembly without using a wired electrical connection, the initiator comprising:
a wirelessly connectable initiator head assembly, comprising:
a body, comprising a head extending from a base, wherein the head includes a first surface, a second surface, an insulating portion extending therebetween, and a platform extending from the first surface away from the base, and wherein the base extends from the second surface of the head; and
an electrical contact component positioned proximal to the body, the electrical contact component comprising an electrically contactable line-in portion positioned proximal to the platform, and an electrically contactable ground portion positioned proximal to the second surface, wherein the insulating portion electrically insulates the line-in portion and the ground portion.

2. The initiator of claim 1 , wherein
the head and the base are formed integrally as a unitary component.

3. The initiator of claim 1 , wherein the initiator head assembly comprises a sealed unit, such that a differential pressure is maintained between an outer surface of the initiator head assembly and an inner surface of the initiator head assembly.

4. The initiator of claim 1 , wherein the electrical contact component is at least partially embedded in the body.

5. The initiator of claim 1 , wherein:
the line-in portion substantially covers a top surface of the platform.

6. The initiator of claim 1 , wherein:
the second surface of the head includes a recessed portion formed around the base; and
the ground portion is positioned at least partially within the recessed portion.

7. The initiator of claim 1 , wherein the electrical contact component further comprises:
a line-in wire extending from the line-in portion; and
a ground wire extending from the ground portion,
wherein each of the line-in wire and the ground wire extend within an interior of the base, and the base electrically insulates each of the line-in wire and the ground wire.

8. The initiator of claim 7 , wherein the line-in wire and the ground wire are arranged mutually parallel within the base of the body.

9. The initiator of claim 7 , wherein:
the line-in wire is formed integrally with the line-in portion; and
the ground wire is formed integrally with the ground portion.

10. The initiator of claim 7 , wherein the line-in wire comprises:
a retaining member positioned centrally in the insulating portion of the head, wherein the retaining member comprises one of a U-shaped portion, a V-shaped portion, a flattened portion, or a portion having a width wider than the width of the line-in wire above or below the retaining member.

11. An initiator, comprising:
a wirelessly connectable initiator head assembly, comprising:
a body including a head extending from a base, wherein the head includes a platform extending from a first surface of the head away from the base, and the base extends from a second surface of the head; and
an electrical contact component at least partially embedded within the body, the electrical contact component comprising:
an electrically contactable line-in portion positioned adjacent a top surface of the platform;
a line-in wire extending from the line-in portion through the head and the base;
an electrically contactable ground portion positioned adjacent the second surface of the head; and
a ground wire extending from the ground portion through the base;

wherein the electrical contact component is held in a fixed position relative to the body.

12. The initiator of claim 11 , wherein the initiator head assembly comprises a sealed unit, such that a differential pressure is maintained between an outer surface of the initiator head assembly and an inner surface of the initiator head assembly.

13. The initiator of claim 11 , wherein:
the line-in portion and the line-in wire are integrally formed; and
the ground portion and the ground wire are integrally formed.

14. The initiator of claim 11 , wherein each of the line-in wire and the ground wire extend through a second end of the base.

15. An initiator configured for being electrically contactably received within a perforating gun assembly without using a wired electrical connection, the initiator comprising:
a shell; and
a wirelessly connectable initiator head assembly, comprising:
a body including a head extending from a base, the head comprising a head and a base, wherein the head includes a platform extending from a first surface of the head away from the base, and the base extends from a second surface of the head; and
an electrical contact component comprising an electrically contactable line-in portion positioned adjacent a top surface of the platform, and an electrically contactable ground portion positioned adjacent a second surface of the head, wherein the electrical contact component is held in a fixed position relative to the body.

16. The initiator of claim 15 , wherein the shell is coupled to the initiator head assembly, such that the electrical contact component electrically connects to an electrically contactable portion of the shell.

17. The initiator of claim 16 , wherein:
the base includes an indentation formed on a surface of the base; and
the shell includes a retaining member formed on a surface of the shell, wherein the retaining member is positioned in the indentation.

18. The initiator of claim 16 , wherein:
the base includes an o-ring compressively engaged with an interior surface of the shell.

19. The initiator of claim 16 , further comprising:
a line-in wire extending from the line-in portion through the head and the base;
a ground wire extending from the ground portion through the base; and
first and second electrically contactable portions of the shell,
wherein each of the line-in wire and the ground wire extend through a second end of the base, and the line-in wire electrically connects to the first electrically contactable portion and the ground wire electrically connects to the second electrically contactable portion of the shell.

20. The initiator of claim 19 , wherein:
the line-in wire is formed integrally with the line-in portion; and
the ground wire is formed integrally with the ground portion.

Assignees

• DynaEnergetics Europe GmbH

Inventors

• Eitschberger Christian

Classifications

• E21B43/1185 Primary

  Ignition systems · CPC title

• F42B3/103

  Mounting initiator heads in initiators; Sealing-plugs · 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

• F42D1/045

  Arrangements for electric ignition (dynamo-electric generators H02K) · 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