Setting tool igniter system and method

Patent metadata

Field	Value
Publication number	US-2019106969-A1
Application number	US-201816214301-A
Country	US
Kind code	A1
Filing date	Dec 10, 2018
Priority date	Aug 9, 2017
Publication date	Apr 11, 2019
Grant date	—

Abstract

There is an igniter system for igniting an energetic material. The igniter system includes a housing having a bore; an igniter located inside the bore; a ground wire directly connected to the igniter; and a signal wire directly connected to the igniter. The ground wire and the signal wire form an electrical circuit with the igniter for igniting the energetic material.

First claim

What is claimed is:

1 . An igniter system for igniting an energetic material, the igniter system comprising:
a housing having a bore; an igniter located inside the bore; a ground wire directly connected to the igniter; and a signal wire directly connected to the igniter, wherein the ground wire and the signal wire form an electrical circuit with the igniter for igniting the energetic material.

2 . The igniter system of claim 1 , wherein the energetic material is located inside the bore, around the igniter.

3 . The igniter system of claim 2 , wherein the igniter is completely covered by the energetic material.

4 . The igniter system of claim 1 , wherein portions of the ground wire and the signal wire that exit the housing are protected with corresponding covers.

5 . The igniter system of claim 1 , wherein the igniter includes a resistor that is electrically connected between the signal wire and the ground wire.

6 . The igniter system of claim 1 , further comprising:
another housing that connects to the housing.

7 . The igniter system of claim 6 , wherein the signal wire and the ground wire pass through the another housing.

8 . The igniter system of claim 6 , further comprising:
a seal element that seals one end of the another housing while the other end of the another housing directly attaches to the housing.

9 . A downhole tool comprising:
a sub having a bore extending along a longitudinal axis, wherein a bulkhead closes the bore at one end, and the bulkhead has a bulkhead bore that fluidly communicates with (i) the bore and (ii) an outside of the switch sub; and an igniter system located inside the bulkhead, wherein the igniter system is configured to ignite an energetic material.

10 . The downhole tool of claim 9 , wherein the igniter system comprises:
a housing having a bore that fits inside the bulkhead bore; an igniter located inside the bore; a ground wire directly connected to the igniter; and a signal wire directly connected to the igniter, wherein the ground wire and the signal wire form an electrical circuit with the igniter for igniting the energetic material.

11 . The downhole tool of claim 10 , wherein the energetic material is located inside the bore, around the igniter.

12 . The downhole tool of claim 11 , wherein the igniter is completely covered by the energetic material.

13 . The downhole tool of claim 10 , wherein portions of the ground wire and the signal wire that exit the housing are protected with corresponding covers, and the portions of the ground wire and the signal wire enter inside the bore of the sub.

14 . The downhole tool of claim 10 , wherein the igniter includes a resistor that is electrically connected between the signal wire and the ground wire.

15 . The downhole tool of claim 10 , further comprising:
another housing that connects to the housing ( 630 ).

16 . The downhole tool of claim 15 , wherein the signal wire and the ground wire pass through the another housing.

17 . The downhole tool of claim 15 , further comprising:
a seal element that seals one end of the another housing while the other end of the another housing directly attaches to the housing.

18 . The downhole tool of claim 10 , further comprising:
a nut that attaches to the sub to hold the igniter attached to the sub.

19 . The downhole tool of claim 10 , further comprising:
a setting tool for setting a plug, the setting tool being attached to an end of the sub where the igniter is located.

20 . A method for manufacturing an igniter for a downhole tool, the method comprising:
placing the igniter inside a housing together with an energetic material; placing the housing in a bulkhead of a sub, the sub having a bore closed by the bulkhead, wherein a bulkhead bore of the bulkhead fluidly communicates with (i) the bore and (ii) an outside of the sub; and attaching a nut to an inside wall of the sub to hold the igniter within the bulkhead bore, wherein a ground wire is directly connected to the igniter, a signal wire is directly connected to the igniter, and the ground wire and the signal wire form an electrical circuit with the igniter for igniting the energetic material.

Assignees

• Geodynamics Inc

Inventors

• Sullivan Shelby L
• Joslin Johnny
• Davis Robert E
• Hardesty John T

Classifications

• E21B23/065 Primary

  setting tool actuated by explosion or gas generating means · CPC title

• E21B43/11855 Primary

  mechanically actuated, e.g. by movement of a wireline or a drop-bar (E21B43/11852 takes precedence) · CPC title

• E21B23/06

  for setting packers · CPC title

• F42B3/24

  Cartridge closures or seals (top closures for shotgun ammunition cartridges F42B7/12) · CPC title

• F42B3/103

  Mounting initiator heads in initiators; Sealing-plugs · CPC title