IP Library › Granted Patent US 12669039
Granted Patent B2
US 12669039 · App. 18/736,788 · Granted Jun 30, 2026

Methods and systems for an addressable switch in a cartridge that creates a safe barrier between surface equipment and explosive device

Inventors: Gary Shearer (Flint, TX); Chris Reed (Canton, TX)
Assignee: Greenwell Engineering, Inc.
E21B43/1185
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Quick Facts
Patent No.
US 12669039
App. No.
18/736,788
Granted
Jun 30, 2026
Kind
B2
Abstract

Safe addressable firing controls positioned within a reusable housing that only allows voltage and current from the shooting panel to reach the explosive device by addressing the switch to open allowing electricity to pass through it and setting off the chain reaction during detonation, wherein the safe addressable firing controls positioned within a cartridge that creates a safety barrier between the surface equipment and a downhole tool, such as an explosive device.

Claims (16)

1 . A system associated with an addressable switch for perforating devices, the system comprising:

a reusable housing that creates a safe barrier between surface equipment and an explosive device,

a cartridge comprising a secondary housing positioned in an internal chamber within the reusable housing,

wherein the secondary housing comprises a first electrical contact pin extending from one end of the secondary housing and a second electrical pin extending from an opposite end of the secondary housing, and

wherein the cartridge is reusable and includes an addressable switch that is configured to be activated by signal transmission from the surface equipment via the electrical contact pins.

2 . The system of claim 1 , where the cartridge has no external wiring requirements.

3 . The system of claim 1 , where the cartridge is configured to only be able to shoot one explosive device.

4 . The system of claim 1 , wherein the cartridge includes external grounds on the outer diameter of the cartridge.

5 . The system of claim 1 , wherein the reusable housing is positioned between the distal end of a wireline and the detonator.

6 . The system of claim 5 , wherein the detonator is positioned uphole from the explosive device.

7 . The system of claim 1 , wherein an outer surface of the housing is configured to receive forces caused by igniting the explosive device.

8 . The system of claim 1 , wherein the reusable housing within the cartridge is configured to be pulled out of a hole after activating the explosive device, wherein the reusable housing within the cartridge is used in subsequent downhole operations on new wireline strings.

9 . The system of claim 1 , wherein the reusable cartridge is configured to only allow the voltage and the current to the detonator when the addressable switch is opened via the surface equipment.

10 . The system of claim 9 , wherein the reusable housing does not allow the voltage or the current to pass through the detonator before the addressable switch is opened via the surface equipment.

11 . The system of claim 1 , wherein the reusable housing and the cartridge are not damaged when an explosive device associated with the detonator is activated.

12 . The system of claim 1 , wherein the reusable housing with the cartridge is not placed in a sub that includes the detonator or an explosive device.