Setting tool igniter system and method

Patent metadata

Field	Value
Publication number	US-10920544-B2
Application number	US-201916240942-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Aug 9, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A downhole system includes a switch sub holding a gun switch and an adapter attached to the switch sub and holding an igniter switch. The gun switch is configured to detonate a detonator, and the igniter switch is configured to ignite an igniter system.

First claim

What is claimed is:

1. A downhole system comprising:
a switch sub holding a gun switch; and
an adapter attached with a first end to the switch sub, wherein the adapter is configured to hold, at the first end, an igniter switch, and at a second end, opposite to the first end, an igniter system,
wherein the gun switch is configured to detonate a detonator, and
wherein the igniter switch is configured to ignite the igniter system.

2. The system of claim 1 , wherein the detonator is located within the switch sub.

3. The system of claim 1 , further comprising:
a pressure sealing bulkhead element located inside the switch sub.

4. The system of claim 3 , wherein the pressure sealing bulkhead element is electrically connected to the igniter switch and to the gun switch.

5. The system of claim 3 , wherein the pressure sealing bulkhead element is a bi-directional pressure barrier located between the switch sub and the adapter to prevent pressure and fluid to pass from one of the switch sub and the adapter into another one of the switch sub and the adapter.

6. The system of claim 1 , wherein the gun switch is fully located within the switch sub and the igniter switch is fully located within the adapter.

7. The system of claim 1 , further comprising:
a setting tool directly connected to the second end of the adapter.

8. The system of claim 1 , wherein the switch sub has a side opening used for electrically connecting the gun switch to a detonator and the adapter has a side opening used for electrically connecting the igniter switch to the igniter system.

9. The system of claim 1 , wherein at least one of the gun switch and the igniter switch is addressable.

10. An adapter to be placed in line between a switch sub and a setting tool, the adapter comprising:
a body having a bore, the bore being closed by a bulkhead;
the bulkhead having a bulkhead bore that fluidly communicates with the bore; and
an opening that fluidly communicates an exterior of the body with the bore,
wherein the bulkhead bore is configured to receive an igniter system,
wherein the bore is configured to receive only an igniter switch, which is electrically connected to the igniter system, and
wherein a diameter of the bulkhead bore is smaller than a diameter of the bore.

11. The adapter of claim 10 , wherein one end of the body is configured to be attached to the switch sub and another end of the body is configured to be attached to the setting tool.

12. The adapter of claim 10 , wherein the igniter system fits inside the bulkhead bore so that the igniter system acts as a pressure barrier between the setting tool and the bore of the body of the adapter.

13. The adapter of claim 10 , wherein the igniter system has only two wires that are electrically connected to the igniter switch.

14. The adapter of claim 10 , wherein the igniter switch is addressable.

15. The adapter of claim 10 , wherein there is no detonator and no gun switch inside the body.

16. The adapter of claim 10 , further comprising:
a nut that attaches to the bulkhead bore to maintain the igniter system in place.

17. A method for assembling a downhole system comprising:
placing an igniter system into an adapter;
placing an igniter switch into the adapter;
electrically connecting the igniter system to the igniter switch through a wall opening formed in the adapter;
placing a pressure sealing bulkhead element into a switch sub;
electrically connecting the pressure sealing bulkhead element to the igniter switch;
placing a gun detonator and a gun switch inside the switch sub;
electrically connecting the gun switch to the gun detonator and the pressure sealing bulkhead element; and
attaching the adapter to the switch sub,
wherein wires from the gun detonator do not extend past the switch sub and wires from the igniter system do not extend past the adapter.

Assignees

• Geodynamics Inc

Inventors

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

Classifications

• E21B43/1185 Primary

  Ignition systems · CPC title

• E21B43/11855 Primary

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