Box by pin perforating gun system and methods

Patent metadata

Field	Value
Publication number	US-10975671-B2
Application number	US-201916299952-A
Country	US
Kind code	B2
Filing date	Mar 12, 2019
Priority date	May 23, 2014
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A method and system for a perforating gun having a box by pin perforating gun system using swaged down gun bodies. The box by pin perforating gun system may include a removable cartridge to hold a detonator with a switch and an insulated charge holder as an electrical feed-through.

First claim

What is claimed is:

1. A perforating gun system comprising:
a first gun body having external threads at a first end, internal threads at a second end, shaped charges arrayed within a loading tube located within, a detonating cord coupled to the shaped charges;
a cartridge inserted in the gun body containing an electrically actuated detonator adjacent to the detonating cord, a shunt, and an electrical switch for selective detonation, wherein the shunt is electrically coupled to the electrical switch, which is further electrically coupled to the detonator, wherein the insertable cartridge can selectively fire the perforating charges in the first gun body, independent of any additional gun body coupled to the first gun body; and

a contact wave spring and a deto transfer puck, wherein the contact wave spring is engaged between the insertable cartridge and the deto transfer puck.

2. The perforating gun system of claim 1 wherein the cartridge is adapted to be inserted and removed from the perforating gun as a unit.

3. The perforating gun system of claim 1 further comprising:
a shaped charge loading tube having an upper end and a lower end;
wherein the cartridge has an electrical contact proximate to the detonator; and
the lower end of the loading tube has an electrical contact adapted to contact the electrical contact proximate to the detonator.

4. The perforating gun system of claim 1 further comprising:
at least one insulator between the shaped charge loading tube and the gun body.

5. The perforating gun system of claim 4 further comprising:
an upper end fitting on the upper end of the shaped charge loading tube; and
a lower end fitting on the lower end of the shaped charge loading tube.

6. The perforating gun system of claim 4 wherein the at least one insulator comprises an insulating fitting on an apex end of a plurality of shaped charges.

7. The perforating gun system of claim 4 wherein the at least one insulator comprises an insulating fitting on an open end of a plurality of shaped charges.

8. The perforating gun system of claim 4 wherein the at least one insulator comprises an insulating sleeve over the shaped charge loading tube.

9. The perforating gun system of claim 4 wherein the cartridge has at least one electrical contact at each end.

10. The perforating gun system of claim 1 wherein the cartridge has at least one electrical contact at each end.

11. The perforating gun system of claim 1 wherein the shunt is a manual switch that electrically disables the detonator until manually switched on.

12. A perforating gun system comprising:
a first gun body having external threads at a first end, internal threads at a second end, shaped charges arrayed within a loading tube located within, a detonating cord coupled to the shaped charges; and
a cartridge inserted in the gun body containing an electrically actuated detonator adjacent to the detonating cord, a shunt, wherein the shunt is electrically coupled to the electrical switch, and an electrical switch for selective detonation, a shunt window, wherein the shunt window provides access to actuate the shunt switch, which is further electrically coupled to the detonator, wherein the insertable cartridge can selectively fire the perforating charges in the first gun body, independent of any additional gun body coupled to the first gun body.

13. The perforating gun system of claim 2 wherein the cartridge is adapted to be inserted and removed from the perforating gun as a unit.

14. The perforating gun system of claim 2 further comprising:
a shaped charge loading tube having an upper end and a lower end;
wherein the cartridge has an electrical contact proximate to the detonator; and
the lower end of the loading tube has an electrical contact adapted to contact the electrical contact proximate to the detonator.

15. The perforating gun system of claim 2 further comprising:
at least one insulator between the shaped charge loading tube and the gun body.

16. The perforating gun system of claim 15 further comprising:
an upper end fitting on the upper end of the shaped charge loading tube; and
a lower end fitting on the lower end of the shaped charge loading tube.

17. The perforating gun system of claim 15 wherein the at least one insulator comprises an insulating fitting on an apex end of a plurality of shaped charges.

18. The perforating gun system of claim 15 wherein the at least one insulator comprises an insulating fitting on an open end of a plurality of shaped charges.

19. The perforating gun system of claim 15 wherein the at least one insulator comprises an insulating sleeve over the shaped charge loading tube.

20. The perforating gun system of claim 15 wherein the cartridge has at least one electrical contact at each end.

21. The perforating gun system of claim 2 wherein the cartridge has at least one electrical contact at each end.

22. The perforating gun system of claim 2 wherein the shunt is a manual switch that electrically disables the detonator until manually switched on.

Assignees

• Hunting Titan Inc

Inventors

• Bradley Richard Wayne
• Collins William Richard
• Jordan John W
• Lane Andy
• Langford Dale
• Levine Charles
• Pundole Faraidoon

Classifications

• E21B43/117 Primary

  Shaped-charge perforators (E21B43/118 takes precedence) · CPC title

• E21B43/1185 Primary

  Ignition systems · CPC title

• F42B5/035

  the cartridge or barrel assembly having a plurality of axially stacked projectiles each having a separate propellant charge · CPC title

• E21B17/042

  Threaded · CPC title

• F42B3/08

  with cavities in the charge, e.g. hollow-charge blasting cartridges · CPC title