Igniter assembly for a setting tool

Patent metadata

Field	Value
Publication number	US-9598942-B2
Application number	US-201514829754-A
Country	US
Kind code	B2
Filing date	Aug 19, 2015
Priority date	Aug 19, 2015
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

An igniter assembly is disclosed for initiating an explosive charge in a setting tool. In an embodiment, the igniter assembly includes a longitudinal axis, and a holder including a first end, a second end opposite the first end, and a through passage. In addition, the igniter assembly includes an igniter disposed within the through passage. The igniter comprises a single igniter system. Further, the igniter assembly includes a contact seal plug disposed at least partially within the through passage. The contact sealing plug is configured to sealingly engage the through passage to prevent fluid flow out of the through passage beyond the first end of the holder.

First claim

What is claimed is:

1. A perforating gun assembly having a longitudinal axis, the perforating gun assembly comprising:
a perforating gun to perforate a subterranean wellbore;
a setting tool to install a plug within the wellbore;
an adapter configured to connect to each of the perforating gun and the setting tool, wherein the adapter includes an internal passage; and
an igniter assembly at least partially within the internal passage of the adapter, wherein the igniter assembly includes:
a holder including a through passage;
an igniter disposed within the through passage, wherein the igniter comprises a single igniter system; and
a contact seal plug disposed at least partially within the through passage, wherein the contact sealing plug is configured to prevent fluid flow from the through passage of the holder to the internal passage of the adapter.

2. The perforating gun assembly of claim 1 , wherein the contact seal plug comprises:
a plug housing;
a contact rod extending through the plug housing, wherein the contact rod is electrically coupled to an electrical contact disposed within the internal passage of the adapter; and
a sealing assembly configured to restrict fluid flow between the contact rod and the plug housing.

3. The perforating gun assembly of claim 1 , wherein the contact rod is electrically insulated from the plug housing.

4. The perforating gun assembly of claim 3 , wherein the contact seal plug further comprises:
a first contact threadably engaged with a first end of the contact rod;
a second contact threadably engaged with a second end of the contact rod; and
wherein the first end of the contact rod is opposite the second end of the contact rod.

5. The perforating gun assembly of claim 4 , wherein the plug housing comprises:
a first end;
a second end opposite the first end of the plug housing;
a first chamber extending axially into the plug housing from the first end of the plug housing;
a second chamber extending axially into the plug housing from the second end of the plug housing; and
a third chamber extending axially between the first chamber and the second chamber;
wherein the contact rod extends through each of the first chamber, the second chamber, and the third chamber;
wherein the first contact is electrically insulated from the plug housing with a first insulator disposed about the contact rod and inserted within the first chamber; and
wherein the second contact is electrically insulated from the plug housing with a second insulator disposed about the contact rod and inserted within the second chamber.

6. The perforating gun assembly of claim 5 , wherein the first chamber includes a first radially extending partition wall;
wherein the second chamber includes a second radially extending partition wall; and
wherein the sealing assembly comprises:
a first sealing member disposed axially between the first contact and the first insulator;
a second sealing member disposed axially between the first insulator and the first partition wall;
a third sealing member disposed axially between the second partition wall and the second insulator; and
a fourth sealing member disposed axially between the second insulator and the second contact.

7. The perforating gun assembly of claim 6 , wherein at least one of the first sealing member, the second sealing member, the third sealing member, and the fourth sealing member comprises an O-ring.

8. The perforating gun assembly of claim 3 ,
wherein the plug housing comprises:
a first end;
a second end opposite the first end of the plug housing; and
a throughbore extending axially between the first end and the second end of the plug housing;

wherein the contact rod extends through the throughbore;
wherein the sealing assembly includes an electrically insulating material disposed within the throughbore and about the contact rod.

9. A perforating gun assembly having a longitudinal axis, the perforating gun assembly comprising:
a perforating gun to perforate a subterranean wellbore;
a setting tool to install a plug within the wellbore;
an adapter configured to connect to each of the perforating gun and the setting tool, wherein the adapter includes an internal passage; and
an igniter assembly at least partially within the internal passage of the adapter, wherein the igniter assembly includes:
a holder including a first end, a second end opposite the first end, and a through passage;
an igniter disposed within the through passage, wherein the igniter comprises a single igniter system; and
a contact seal plug disposed at least partially within the through passage, wherein the contact sealing plug is configured to sealingly engage the through passage to prevent fluid flow out of the through passage beyond the first end of the holder into the internal passage of the adapter.

10. The perforating gun assembly of claim 9 , wherein the contact seal plug comprises:
a plug housing comprising:
a first end;
a second end opposite the first end of the plug housing;
a first chamber extending axially into the plug housing from the first end of the plug housing, the first chamber including a first radially extending partition wall;
a second chamber extending axially into the plug housing from the second end of the plug housing; and
a third chamber extending axially between the first chamber and the second chamber, the third chamber including a second radially extending partition wall;

a contact rod extending through the first chamber, the second chamber, and the third chamber of the plug housing, wherein the contact rod includes a first end and a second end; and
a first contact threadably engaged with the first end of the contact rod;
a second contact threadably engaged with the second end of the contact rod; and
a first insulator disposed about the contact rod and axially between the first contact and the first partition wall in the first chamber;
a second insulator disposed about the contact rod and axially between the second contact and the second partition wall in the third chamber.

11. The perforating gun assembly of claim 10 , wherein the contact seal plug further comprises a sealing assembly configured to restrict fluid flow between the contact rod and the plug housing, the sealing assembly comprising:
a first sealing member disposed axially between the first contact and the first insulator;
a second sealing member disposed axially between the first insulator and the first partition wall;
a third sealing member disposed axially between the second partition wall and the second insulator; and
a fourth sealing member disposed axially between the second insulator and the second contact.

12. The perforating gun assembly of claim 9 ,
a plug housing including a first end, a second end opposite the first end of the plug housing and a throughbore extending axially between the first end and the second end of the plug housing;
a contact rod extending through throughbore of the plug housing; and
an electrically insulating material disposed within the throughbore and about the contact rod, wherein the electrically insulating material is configured to restrict fluid flow between the throughbore of the plug housing and the contact rod.

Assignees

• G&H Diversified Mfg Lp

Inventors

• Wells Joe Noel
• Knight Benjamin Vascal

Classifications

• E21B43/1185 Primary

  Ignition systems · CPC title

• E21B43/116

  Gun or shaped-charge perforators · CPC title