Retaining and positioning end cap for downhole setting tool power charges

Patent metadata

Field	Value
Publication number	US-10408025-B2
Application number	US-201715648009-A
Country	US
Kind code	B2
Filing date	Jul 12, 2017
Priority date	Jul 12, 2017
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A downhole setting tool and method of using the setting tool, the setting tool including a firing head, an igniter, a housing connected to the firing head, a power charge positioned within a chamber of the housing, and a connector connecting a portion of the power charge to the firing head. The connector may be connected to the uphole end of the power charge. The connector may connect the power charge to an adapter that connects the power charge to the firing head. The connector may be a ring having an outer engagement feature that engages the adapter and an inner engagement feature that engages the power charge. The connector may be a collet including an outer engagement feature that engages the adapter and a plurality of fingers that engage the power charge. The ignitor is used to detonate the power charge to set a device within a wellbore.

First claim

What is claimed is:

1. A tool comprising:
a firing head;
an igniter;
a housing connected to the firing head, the housing including a chamber;
a power charge positioned within the chamber;
an adapter positioned between the firing head and the power charge; and
a connector directly connected to an uphole end of the power charge, wherein the adapter is positioned between the igniter and the connector, wherein the connector connects a portion of the power charge to the adapter, and wherein the power charge is connected to the firing head via the adapter.

2. The tool of claim 1 , wherein power charge further comprises an outer housing, the connector connecting a portion of the outer housing to the adapter.

3. The tool of claim 2 , wherein the connector further comprises a ring having an outer engagement feature and an inner engagement feature.

4. The tool of claim 3 , wherein the outer engagement feature engages a mating feature of the adapter and wherein the inner engagement feature engages a mating feature of the power charge.

5. The tool of claim 2 , wherein the connector further comprises a collet having a plurality of fingers.

6. The tool of claim 5 , wherein the collet includes an outer engagement feature configured to engage a mating feature of the adapter and wherein each of the plurality of fingers include an inner engagement feature configured to engage a mating feature on the power charge.

7. The tool of claim 1 , wherein the igniter is actuated by an electrical signal from an electrical conduit.

8. The tool of claim 7 , wherein the actuation of the igniter detonates the power charge.

9. The tool of claim 8 , wherein the detonation of the power charge sets a tool within a wellbore.

10. The tool of claim 7 , wherein the actuation of the igniter ignites a secondary igniter that detonates the power charge.

11. The tool of claim 1 , wherein a portion of the adapter is positioned between the connector and the housing.

12. A method of using a downhole setting tool comprising:
attaching a connector directly to an uphole end of a power charge configured to be selectively detonated to set a device within a wellbore; and
connecting the power charge to an adapter via the connector;
connecting the adapter to a firing head; and
connecting the firing head to a housing, wherein the power charge is positioned within a chamber within the housing, wherein an igniter is positioned between the adapter and the firing head, and wherein the igniter may be selectively actuated via an electrical signal via an electrical conduit.

13. The method of claim 12 , further comprising running the downhole setting tool into the wellbore.

14. The method of claim 13 , further comprising detonating the power charge to set the device in the wellbore.

15. The method of claim 12 , wherein connecting the power charge to the adapter further comprises engaging a mating feature of the adapter with an outer engagement feature of the connector.

16. A power charge comprising:
a power charge configured to be detonated to set a tool within a wellbore, the power charge having an uphole end and a downhole end when installed within a downhole setting tool, the power charge including an outer housing; and
a connector, the connector comprising a ring configured to attach directly to the uphole end of the outer housing of the power charge, the connector including an inner engagement feature configured to retain the uphole end of the power charge and the connector including an outer engagement feature.

17. The power charge of claim 16 , wherein the inner engagement feature is configured to engage a mating feature on the outer housing of the power charge.

18. The power charge of claim 17 , wherein the connector further comprises a collet having a plurality of fingers, wherein each finger includes the inner engagement feature.

19. A method of actuating a downhole tool having an actuation mechanism for receiving a mechanical force generated by a detonation of a power charge in a downhole setting tool, the power charge having an uphole end and a downhole end when installed within the downhole setting tool, a connector including an outer engagement feature connected directly to the uphole end of the power charge, the method comprising:
attaching the connector directly to the uphole end of the power charge;
connecting the power charge to an adapter via the connector;
connecting the adapter to a firing head, wherein an igniter is positioned between the adapter and the firing head;
selectively actuating the igniter in the downhole setting tool via an electrical signal to selectively detonate the power charge;
generating a mechanical force upon detonation of the power charge; and
transmitting the mechanical force to the actuation mechanism adapted to actuate the downhole tool.

20. The method of claim 19 , wherein actuation of the downhole tool comprises one or more of setting, releasing, or shifting the downhole tool.

21. The method of claim 20 , wherein the downhole tool comprises one or more of a packer, frac plug, bridge plug, valve, and sleeve.

Assignees

• Baker Hughes A Ge Co Llc

Inventors

• Harrington Kevin Edgar
• Hern Gregory
• Meyer Kent

Classifications

• E21B43/116

  Gun or shaped-charge perforators · CPC title

• E21B43/11857 Primary

  firing indication systems · CPC title

• E21B23/065

  setting tool actuated by explosion or gas generating means · CPC title

• E21B41/0085

  Adaptations of electric power generating means for use in boreholes · CPC title

• E21B43/11855

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