Non-detonable shaped charge and activation

Patent metadata

Field	Value
Publication number	US-12091948-B2
Application number	US-202218067202-A
Country	US
Kind code	B2
Filing date	Dec 16, 2022
Priority date	Sep 27, 2016
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A non-detonable shaped charge capable of becoming detonable upon activation. The shaped charge may be utilized for use with a perforating gun in oilfield applications. In this regard, during transport and other handling in advance of reaching the application site, the charge may be non-detonable. However, upon an intentionally directed activation, such as through heating, the shaped charge may be detonable.

First claim

The invention claimed is:

1. A shaped charge, comprising:
a carrier;
an oxidizer component housed within the carrier;
a fuel component housed within the carrier, wherein the oxidizer component and the fuel component are retained in a non-detonable state relative to one another; and
a hinge coupled to an end of the carrier and supporting the carrier for pivotal movement, the carrier pivotal about the hinge between a first position and a second position, the carrier retaining the oxidizer component and the fuel component in the non-detonable state relative to one another while the carrier is in the first position, wherein the oxidizer component and the fuel component activate from the non-detonable state to a detonable state in response to an increase in temperature and the pivotal movement of the carrier about the hinge from the first position to the second position that mixes the oxidizer component and the fuel component within the carrier.

2. The shaped charge of claim 1 , wherein the fuel component is an organic fuel.

3. The shaped charge of claim 1 , wherein the oxidizer component is an inorganic oxidizer.

4. The shaped charge of claim 3 , wherein the oxidizer component comprises at least one of ammonium nitrate, lithium nitrate, sodium nitrate, or potassium nitrate.

5. The shaped charge of claim 1 , wherein the oxidizer component is a heat responsive compressed powder.

6. The shaped charge of claim 1 , wherein the fuel component is a heat responsive compressed powder.

7. The shaped charge of claim 1 , wherein at least one of the oxidizer component and the fuel component is a liquid in the non-detonable state.

8. The shaped charge of claim 1 , further comprising a degradable barrier separating the fuel component and the oxidizer component in the non-detonable state.

9. A shaped charge, comprising:
a carrier;
an oxidizer component housed within the carrier;
a fuel component housed within the carrier; and
a degradable barrier separating the oxidizer component and the fuel component to maintain, the oxidizer component and the fuel component in a non-detonable state relative to one another, wherein the oxidizer component and the fuel component activate from the non-detonable state to a detonable state in response to an increase in temperature, and wherein the increase in temperature induces mixing of the oxidizer component and the fuel component within the carrier.

10. The shaped charge of claim 9 , further comprising:
the carrier retaining the oxidizer component, the fuel component, and the degradable barrier; and
a hinge coupled to an end of the carrier and supporting the carrier for pivotal movement, the carrier pivotal about the hinge between a first position and a second position, the carrier retaining the oxidizer component and the fuel component in the non-detonable state relative to one another while the carrier is in the first position, wherein the oxidizer component and the fuel component are further configured to activate from the non-detonable state to the detonable state in response to the pivotal movement of the carrier that mixes the oxidizer component and the fuel component within the carrier.

11. The shaped charge of claim 9 , wherein the oxidizer component and the fuel component activate from the non-detonable state to the detonable state in response to the temperature of the shaped charge being between about 150° F. and about 440° F.

12. The shaped charge of claim 9 , further comprising a heating element.

13. The shaped charge of claim 1 , wherein the oxidizer component and the fuel component are provided in a eutectic mixture in the non-detonable state.

14. The shaped charge of claim 13 , wherein the increase in temperature induces the substantially solid eutectic mixture to reach a molten state.

15. The shaped charge of claim 9 , wherein the fuel component is an organic fuel.

16. The shaped charge of claim 9 , wherein the oxidizer component is an inorganic oxidizer.

17. A shaped charge, comprising:
a carrier;
an oxidizer component housed within the carrier;
a fuel component housed within the carrier, wherein the oxidizer component and the fuel component are retained in a non-detonable state relative to one another;
a degradable barrier separating the fuel component and the oxidizer component in the non-detonable state in the carrier; and
a hinge coupled to an end of the carrier and supporting the carrier for pivotal movement, the carrier pivotal about the hinge between a first position and a second position, the carrier retaining the oxidizer component and the fuel component in the non-detonable state relative to one another while the carrier is in the first position, wherein the oxidizer component and the fuel component activate from the non-detonable state to a detonable state in response to an increase in temperature of the shaped charge and the pivotal movement of the carrier about the hinge from the first position to the second position that mixes the oxidizer component and the fuel component within the carrier.

18. The shaped charge of claim 17 , wherein the increase in temperature induces mixing of the oxidizer component and the fuel component within the carrier.

19. The shaped charge of claim 17 , wherein the fuel component is an organic fuel.

20. The shaped charge of claim 17 , wherein the oxidizer component is an inorganic oxidizer.

21. The shaped charge of claim 1 , wherein the carrier is oriented in a downhole direction in the first position, and wherein the carrier is oriented in a lateral direction toward a surface of a well in the second position.

Assignees

• Schlumberger Technology Corp

Inventors

• Skyler David

Classifications

• C06B31/00

  Compositions containing an inorganic nitrogen-oxygen salt · CPC title

• F42C15/38

  wherein arming is effected by chemical action (F42C3/00 takes precedence) · CPC title

• F42B1/032

  characterised by the material of the liner · CPC title

• F42B1/036

  Manufacturing processes therefor {(F42B33/0214 - F42B33/0292 take precedence)} · CPC title

• F42B1/02

  Shaped or hollow charges (blasting cartridges with cavities in the charge F42B3/08; oil winning using shaped-charge perforators E21B43/116) · CPC title