Perforating gun and detonator assembly

Patent metadata

Field	Value
Publication number	US-9581422-B2
Application number	US-201514932865-A
Country	US
Kind code	B2
Filing date	Nov 4, 2015
Priority date	Aug 26, 2013
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

According to an aspect, a perforating gun assembly and a detonator assembly are provided. The detonator assembly includes at least a shell, and more than one electrically contactable component that is configured for being electrically contactably received by the perforating gun assembly without using a wired electrical connection, but rather forms the electrical connection merely by contact with at least one of the more than one electrically contactable components. According to an aspect, the detonator assembly includes a selective detonator assembly. A method of assembling the perforating gun assembly including the detonator assembly is also provided.

First claim

What is claimed is:

1. A wireless detonator assembly configured for being electrically contactably received within a perforating gun assembly without using a wired electrical connection, comprising:
a shell configured for housing components of the detonator assembly;
more than one electrical contact component, wherein at least one of the electrical contact components extends from the shell and further wherein the electrical contact component comprises an electrically contactable line-in portion, an electrically contactable line-out portion and an electrically contactable ground portion, the ground portion in combination with the line-in portion and the line-out portion being configured to replace the wired electrical connection to complete an electrical connection merely by contact;
an insulator positioned between the line-in portion and the line-out portion, wherein the insulator electrically isolates the line-in portion from the line-out portion; and
means for selective detonation housed within the shell,
wherein the detonator assembly is configured for electrically contactably forming the electrical connection merely by the contact.

2. The wireless detonator assembly of claim 1 , wherein the means for selective detonation further comprise an electronic circuit board and means for receiving an ignition signal.

3. The wireless detonator assembly of claim 2 , further comprising a capacitor positioned on the electronic circuit board, the capacitor configured to be discharged to initiate the detonator assembly upon receipt of a digital firing sequence via an ignition signal, the ignition signal being electrically relayed directly through the line-in portion and the line-out portion.

4. The wireless detonator assembly of claim 2 , further comprising means for ensuring immunity to stray current or voltage or radio frequency signals, such that the detonator assembly is not unintentionally armed or initiated.

5. A perforating gun assembly, comprising:
a wirelessly-connectable selective detonator assembly configured for being electrically contactably received within the perforating gun assembly without using a wired electrical connection, the detonator assembly comprising:
a shell configured for housing components of the detonator assembly;
more than one electrically contactable component, wherein at least one of the electrical contact components extends from the shell and further wherein the electrical contact component comprises an electrically contactable line-in portion, an electrically contactable line-out portion, and an electrically contactable ground portion, the ground portion in combination with the line-in portion and the line-out portion being configured to replace the wired electrical connection to complete an electrical connection merely by contact;
an insulator positioned between the line-in portion and the line-out portion, wherein the insulator electrically isolates the line-in portion from the line-out portion; and
means for selective detonation of the detonator assembly,
wherein the means for selective detonation is housed within the shell, and the detonator assembly configured for electrically contactably forming the electrical connection merely by the contact and without the need of manually and physically connecting wires.

6. The perforating gun assembly of claim 5 , wherein the means for selective detonation further comprise an electronic circuit board and means for receiving an ignition signal.

7. The perforating gun assembly of claim 6 , further comprising a capacitor positioned on the electronic circuit board, the capacitor being configured to be discharged to initiate the detonator assembly upon receipt of a digital firing sequence via an ignition signal, and the ignition signal being electrically relayed directly through the line-in portion and the line-out portion.

8. The perforating gun assembly of claim 5 , further comprising a detonating cord positioned within the perforating gun assembly such that at least a portion of the detonating cord is in contact with the detonator assembly.

9. The perforating gun assembly of claim 8 , wherein the detonator assembly is configured for initiating the detonating cord without the detonating cord having to be attached to the detonator assembly.

10. The perforating gun assembly of claim 8 , wherein the detonating cord is positioned in side-by-side contact with at least a portion of the shell.

11. The perforating gun assembly of claim 5 , further comprising means for ensuring immunity to stray current or voltage or radio frequency signals, such that the detonator assembly is not unintentionally armed or initiated.

12. A method of assembling a perforating gun assembly without using a wired electrical connection, comprising:
positioning a wirelessly-connectable selective detonator assembly within the perforating gun assembly, wherein the detonator assembly comprises:
a shell configured for housing components of the detonator assembly;
more than one electrically contactable component, wherein at least one of the electrical contact components extends from the shell and further wherein the electrical contact component comprises an electrically contactable line-in portion, an electrically contactable line-out portion, and an electrically contactable ground portion, the ground portion in combination with the line-in portion and the line-out portion being configured to replace the wired electrical connection to complete a wireless electrical connection merely by contact;
an insulator positioned between the line-in portion and the line-out portion, wherein the insulator electrically isolates the line-in portion from the line-out portion; and
means for selective detonation of the detonator assembly,
electrically contactingly connecting the detonator assembly such that the detonator assembly electrically contactably forms the wireless electrical connection merely by the contact and without the need of manually and physically connecting wires.

13. The method of assembling the perforating gun assembly of claim 12 , further comprising:
positioning a detonator positioning assembly within the perforating gun assembly; and
positioning the wirelessly-connectable selective detonator assembly within the detonator positioning assembly.

14. The method of assembling the perforating gun assembly of claim 12 , further comprising:
positioning a detonating cord within the perforating gun assembly such that at least a portion of the detonating cord is in contact with the detonator assembly.

15. The method of assembling the perforating gun assembly of claim 14 , further comprising:
initiating the detonating cord without the detonating cord having to be attached to the detonator assembly.

Assignees

• Dynaenergetics Gmbh & Co Kg

Inventors

• Preiss Frank Haron
• Scharf Thilo
• Mcnelis Liam

Classifications

• E21B43/1185 Primary

  Ignition systems · CPC title

• F42C19/12 Primary

  electric · CPC title

• F42B3/10

  Initiators therefor (percussion fuzes F42C7/00; percussion caps F42C19/10; electric primers F42C19/12) · CPC title

• E21B43/11 Primary

  Perforators; Permeators · CPC title