Pressure bulkhead

Patent metadata

Field	Value
Publication number	US-11118436-B2
Application number	US-201816611607-A
Country	US
Kind code	B2
Filing date	May 18, 2018
Priority date	May 19, 2017
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A switch assembly adapted for electrically coupling perforating guns and providing improved safety.

First claim

What is claimed is:

1. An apparatus for electrically connecting a perforating gun comprising:
a housing having a first portion having a first end and a first outer diameter, and having a second portion with a second end and a second outer diameter, and an outer circumferential groove proximate to the second end;
a switch disposed within the housing;
a retainer having a first end with a first bore with an inner circumferential groove proximate to the first end, a second end with a frusto conical shaped bore, a thru bore connecting the first bore with the frusto conical shaped bore, wherein the first bore is coupled to the second end of the housing and the inner circumferential groove of the retainer substantially aligns with the outer circumferential groove of the housing; and
a snap ring disposed within the outer circumferential groove of the housing and the inner circumferential groove of the retainer.

2. The apparatus of claim 1 further comprising the housing having a thru bore extending from the first end with a first inner diameter.

3. The apparatus of claim 1 further comprising the housing having a switch bore extending from the second end with a second inner diameter, wherein the switch bore is adapted to house the switch.

4. The apparatus of claim 1 further comprising the first outer diameter having a plurality of o-ring grooves.

5. The apparatus of claim 1 further comprising an explosively activated switch disposed within the second portion of the housing.

6. The apparatus of claim 1 further comprising a first wire coupled to the switch and extending through the first end of the housing.

7. The apparatus of claim 1 further comprising a second wire coupled to the switch and extending through the first end of the housing.

8. The apparatus of claim 1 , wherein the inner circumferential groove and the outer circumferential groove are sized to fit a snap ring.

9. The apparatus of claim 1 wherein the first outer diameter is larger than the second outer diameter.

10. The apparatus of claim 1 , wherein the first bore of the retainer has a diameter substantially equal to the diameter of the second outer diameter of the housing.

11. The apparatus of claim 1 further comprising the retainer having a radial groove on the on the first end that abuts the second end of the housing when the retainer is installed to the housing.

12. The apparatus of claim 11 further comprising a wave spring disposed within the radial groove, wherein the wave spring provides a longitudinal force pushing the retainer away from the housing.

13. The apparatus of claim 1 wherein the switch is an addressable switch.

14. The apparatus of claim 1 wherein the switch is a mechanical pressure switch.

15. The apparatus of claim 1 wherein the switch is a dual diode switch.

16. An apparatus for electrically connecting a perforating gun comprising:
a first perforating gun coupled to a tandem sub;
a second perforating gun coupled to the tandem sub; and
the tandem sub containing a switch bulkhead assembly further comprising:
a housing having a first portion having a first end and a first outer diameter, and having a second portion with a second end and a second outer diameter, an outer circumferential groove proximate to the second end, a thru bore extending from the first end with a first inner diameter, and a switch bore extending from the second end with a second inner diameter;
a switch disposed within the switch bore of the second portion of the housing;
a retainer having a first end with a first bore with a inner circumferential groove proximate to the first end, a second end with a frusto conical shaped bore, a thru bore connecting the first bore with the frusto conical shaped bore, wherein the first bore is coupled to the second end of the housing and the inner circumferential groove of the retainer substantially aligns with the outer circumferential groove of the housing; and
a snap ring disposed within the outer circumferential groove of the housing and the inner circumferential groove of the retainer.

17. The apparatus of claim 16 further comprising the first outer diameter having a plurality of o-ring grooves.

18. The apparatus of claim 16 further comprising a first wire coupled to the switch and extending through the first end of the housing.

19. The apparatus of claim 16 further comprising a second wire coupled to the switch and extending through the first end of the housing.

20. The apparatus of claim 16 wherein the inner circumferential groove and the outer circumferential groove are sized to fit a snap ring.

21. The apparatus of claim 16 wherein the first outer diameter is larger than the second outer diameter.

22. The apparatus of claim 16 wherein the first bore of the retainer has a diameter substantially equal to the diameter of the second outer diameter of the housing.

23. The apparatus of claim 16 further comprising the retainer having a radial groove on the on the first end that abuts the second end of the housing when the retainer is installed to the housing.

24. The apparatus of claim 23 further comprising a wave spring disposed within the radial groove, wherein the wave spring provides a longitudinal force pushing the retainer away from the housing.

25. The apparatus of claim 16 wherein the switch is an addressable switch.

26. The apparatus of claim 16 wherein the switch is a mechanical pressure switch.

27. The apparatus of claim 16 wherein the switch is a dual diode switch.

28. An apparatus for electrically connecting a perforating gun comprising:
a housing having a first portion having a first end and a first outer diameter, and having a second portion with a second end and a second outer diameter, an outer circumferential groove proximate to the second end, a thru bore extending from the first end with a first inner diameter, and a switch bore extending from the second end with a second inner diameter;
a switch disposed within the switch bore of the second portion of the housing;
a retainer having a first end with a first bore with a inner circumferential groove proximate to the first end, a second end with a frusto conical shaped bore, a thru bore connecting the first bore with the frusto conical shaped bore, wherein the first bore is coupled to the second end of the housing and the inner circumferential groove of the retainer substantially aligns with the outer circumferential groove of the housing; and
a snap ring disposed within the outer circumferential groove of the housing and the inner circumferential groove of the retainer.

29. The apparatus of claim 28 further comprising the first outer diameter having a plurality of o-ring grooves.

30. The apparatus of claim 28 further comprising a first wire coupled to the switch and extending through the first end of the housing.

31. The apparatus of claim 28 further comprising a second wire coupled to the switch and extending through the first end of the housing.

32. The apparatus of claim 28 wherein the inner circumferential groove and the outer circumferential groove are sized to fit a snap ring.

33. The apparatus of claim 28 wherein the first outer diameter is larger than the second outer diameter.

34. The apparatus of claim 28 wherein the first bore of the re

Assignees

• Hunting Titan Inc

Inventors

• Langford Dale
• Blain Rick
• Pundole Faraidoon
• Mcbride Gene
• Sansing Joel

Classifications

• F42D1/043

  Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B3/26) · CPC title

• F42D3/00

  Particular applications of blasting techniques {(explosive welding B23K20/08; explosive bolts or actuators F42B3/006; explosive valves F16K13/06; cutting devices actuated by explosion B23D15/145; pyrotechnical actuators F15B15/19; switching devices actuated by explosion H01H39/00)} · CPC title

• E21B43/117

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

• F42D1/045 Primary

  Arrangements for electric ignition (dynamo-electric generators H02K) · CPC title

• H01H9/02

  Bases, casings, or covers (accommodating more than one switch or a switch and another electrical component H02B1/26) · CPC title