System and method for providing a resilient solid fuel source in a wellbore

Patent metadata

Field	Value
Publication number	US-10018018-B2
Application number	US-201414276482-A
Country	US
Kind code	B2
Filing date	May 13, 2014
Priority date	May 13, 2014
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A system, method and apparatus for providing a fuel source in a wellbore is disclosed. A tool is placed into a wellbore. A primary charge is associated with the tool. A secondary charge associated with the tool is provided. The secondary charge includes a resilient solid propellant.

First claim

What is claimed is:

1. A system for use in a wellbore, comprising:
a tool;
a primary charge with a first activation energy; and
a secondary charge associated with the primary charge, wherein the secondary charge includes a plasticized solid propellant having a second activation energy greater than the first activation energy and an igniter that is a pellet embedded in the plasticized solid propellant, wherein combustion of the primary charge initiates combustion of the igniter which initiates combustion of the secondary charge.

2. The system of claim 1 , wherein the secondary charge further includes a flammable metal.

3. The system of claim 1 , further comprising a power charge associated with the secondary charge.

4. The system of claim 3 , wherein the power charge includes a dispersed resilient plasticized solid propellant within the power charge, wherein the dispersed resilient plasticized solid propellant is between 5% to 95% of the power charge by weight.

5. The system of claim 4 , wherein the dispersed resilient plasticized solid propellant of the power charge is dispersed as fibers within the power charge.

6. The system of claim 3 , wherein the secondary charge is disposed within the power charge.

7. The system of claim 6 , wherein the secondary charge extends radially through the power charge from a central position.

8. The system of claim 1 , wherein the tool is an expanding tool.

9. An apparatus for use in a wellbore, comprising:
a primary charge with a first activation energy; and
a secondary charge, the secondary charge including a flammable metal and a plasticized solid propellant having a second activation energy greater than the first activation energy, wherein the flammable metal is a pellet embedded in the plasticized solid propellant and combustion of the primary charge initiates combustion of the flammable metal which initiates ignition of the plasticized solid propellant.

10. The apparatus of claim 9 , further comprising a power charge associated with the secondary charge.

11. The apparatus of claim 10 , wherein the power charge includes a dispersed plasticized solid propellant within the power charge, wherein the dispersed plasticized solid propellant is between 5% to 95% of the power charge by weight.

12. The apparatus of claim 10 , wherein the secondary charge is disposed within the power charge.

13. A method for use in a wellbore, comprising:
placing a tool in the wellbore, the tool including;
a primary charge with a first activation energy,
a secondary charge comprising a plasticized solid propellant having a second activation energy greater than the first activation energy and an igniter, and
the igniter associated with the secondary charge, wherein the igniter is a pellet embedded in the plasticized solid propellant; and

stimulating the primary charge to combust, wherein combustion of the primary charge initiates combustion of the igniter which initiates combustion of the solid propellant.

14. The method of claim 13 , further comprising providing a flammable metal coupled to the secondary charge.

15. The method of claim 13 , further comprising providing a power charge associated with the secondary charge.

16. The method of claim 15 , wherein the power charge includes a dispersed resilient plasticized solid propellant within the power charge, wherein the dispersed resilient plasticized solid propellant is between 5% to 95% of the power charge by weight.

17. The method of claim 16 , further comprising dispersing the dispersed resilient plasticized solid propellant of the power charge as fibers within the power charge.

18. The method of claim 15 , further comprising disposing the secondary charge within the power charge.

19. The method of claim 13 , wherein the tool is an expanding tool.

Assignees

• Cannon Edwin A
• Loehr John D
• Meyer Kent S
• Baker Hughes A Ge Co Llc

Inventors

• Cannon Edwin A
• Loehr John D
• Meyer Kent S

Classifications

• E21B41/00 Primary

  Equipment or details not covered by groups E21B15/00 - E21B40/00 · CPC title

• E21B23/04

  operated by fluid means, e.g. actuated by explosion (E21B23/08 takes precedence) · CPC title

• E21B23/0414

  using explosives · CPC title