Composite shaped charges

Patent metadata

Field	Value
Publication number	US-9612095-B2
Application number	US-201514968473-A
Country	US
Kind code	B2
Filing date	Dec 14, 2015
Priority date	Dec 12, 2014
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

Embodiments may take the form of a composite shaped charge. In an example embodiment, a shaped charge includes a casing, an energetic material positioned within the casing, and a liner substantially covering the energetic material. At least one of the casing, the energetic material, and the liner comprises a composite construction. An example embodiment may take the form of a case having a composite construction. An example embodiment may take the form of an energetic material having a composite construction. An example embodiment may take the form of a liner having a composite construction.

First claim

What is claimed is:

1. A shaped charge comprising:
a casing;
a plurality of energetic materials positioned within the casing;
a liner substantially covering the energetic materials, wherein a first of the energetic materials is a first substantially annular ring, wherein a second of the energetic materials is a second substantially annular ring, and wherein the first and second substantially annular rings each extends radially-between the casing and the liner;
wherein the first energetic material is positioned farther away from a central apex of the liner than the second energetic material;
wherein a first angle is defined between the first energetic material and the second energetic material with respect to a central longitudinal axis through the casing, wherein a second angle is defined between the second energetic material and a third of the energetic materials with respect to the central longitudinal axis through the casing, and wherein the first angle is different than the second angle; and
wherein the first angle is more acute than the second angle.

2. The shaped charge of claim 1 , wherein the first energetic material and the second energetic material are two different materials.

3. The shaped charge of claim 2 , wherein a base of the casing and at least a portion of a sidewall of the casing comprise different materials.

4. The shaped charge of claim 3 , wherein the sidewall of the casing comprises a first section adjacent to the base of the casing having a first material and a second section adjacent to the first section comprising a second material different from that of the first section.

5. The shaped charge of claim 4 , wherein the casing comprises one or more of: tungsten, copper, tantalum-tungsten, tungsten-nickel-iron, tungsten carbide-cobalt, steel, amorphous solids, and Mo-tungsten, in powder metal or solid form.

6. The shaped charge of claim 4 , wherein the first section and second section are joined at an angle α x .

7. The shaped charge of claim 5 , further comprising a third section adjacent the second section, the third section comprising a third material and joined with the second section at angle α y different from that of an angle α x .

8. The shaped charge of claim 4 , wherein the first section and second section are coupled together using at least one of epoxy, threads, or pressure to provide continuity between materials.

9. The shaped charge of claim 1 , further comprising a third energetic material positioned within the casing, wherein the second energetic material is positioned between the first and third energetic materials, and wherein the first energetic material comprises a different material than the second energetic material.

10. The shaped charge of claim 9 , wherein the first energetic material is coupled to the second energetic material using at least one of epoxy, threads, or pressure to provide continuity.

11. The shaped charge of claim 1 , wherein the liner comprises a composite construction including at least two different materials.

12. The shaped charge of claim 11 , wherein the liner comprises a composite construction including at least two different materials.

13. The shaped charge of claim 11 , wherein the liner comprises a solid metal and a powdered metal.

14. The shaped charge of claim 11 , wherein the liner comprises at least one of: tungsten, copper, tantalum-tungsten, tungsten-nickel-iron, tungsten carbide-cobalt, steel, amorphous solids, and Mo-tungsten in powder metal or solid form.

15. A method of manufacturing a shaped charge comprising:
forming a case;
placing a plurality of energetic materials within a volume defined by the case, wherein a first of the energetic materials is a first substantially annular ring, wherein a second of the energetic materials is a second substantially annular ring;
positioning a liner over the energetic materials, wherein the first and second substantially annular rings each extends radially-between the case and the liner;
positioning the first energetic material farther away from a central apex of the liner than the second energetic material;
defining a first angle between the first energetic material and the second energetic material with respect to a central longitudinal axis through the casing,
defining a second angle between the second energetic material and a third of the energetic materials with respect to the central longitudinal axis through the casing,
wherein the first angle is different than the second angle; and
wherein the first angle is more acute than the second angle.

16. The method of claim 15 , wherein the first energetic material and the second energetic material comprise different high density materials that are coupled together using at least one of: adhesive, epoxy, threading, and pressure to provide continuity between the different materials.

Assignees

• Schlumberger Technology Corp

Inventors

• Smart Moises Enrique
• Jones Claude

Classifications

• F42B1/028

  characterised by the form of the liner · CPC title

• F42B1/032 Primary

  characterised by the material of the liner · CPC title