Perforating system with an embedded casing coating and erosion protection liner

Patent metadata

Field	Value
Publication number	US-11255168-B2
Application number	US-202117215159-A
Country	US
Kind code	B2
Filing date	Mar 29, 2021
Priority date	Mar 30, 2020
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A shaped charge liner may include an apex portion and a skirt portion extending from the apex portion. The skirt portion may include a body connected to the apex portion, a perimeter spaced apart from the apex portion, and a carbide layer extending between and spaced apart from the perimeter and the apex portion. A shaped charge for creating a perforation hole in a wellbore casing may include a shaped charge liner having at least one material having hardness that is greater than a corresponding hardness of the wellbore casing. The at least one material is configured to bond to at least one of an outer surface and an inner surface of the perforation hole upon detonation of the shaped charge and penetration of the casing by a perforation jet.

First claim

What is claimed is:

1. A shaped charge liner comprising:
an apex portion; and
a skirt portion extending from the apex portion, the skirt portion comprising:
a body connected to the apex portion,
a perimeter spaced apart from the apex portion, and
a layer of material extending between and spaced apart from the perimeter and the apex portion, wherein
the layer of material includes a lacquer applied to a surface of the body, and
the lacquer includes a carbide layer or a metal nitride layer.

2. The shaped charge liner of claim 1 , wherein the layer of material comprises a foil adhered to a surface of the body.

3. The shaped charge liner of claim 1 , wherein the layer of material comprises one of tungsten carbide, titanium carbide, and boron carbide.

4. The shaped charge liner of claim 1 , further comprising:
a plurality of metal powders.

5. The shaped charge liner of claim 1 , wherein
the layer of material includes a powder comprising carbide or nitride, and
the powder is combined with a plurality of metal powders.

6. The shaped charge liner of claim 1 , wherein the layer of material comprises a plurality of spaced apart carbide layers or a plurality of spaced apart nitride layers.

7. A shaped charge for creating a perforation hole in a wellbore casing, the shaped charge comprising:
a shaped charge liner comprising at least one material having a hardness that is greater than a corresponding hardness of the wellbore casing,
wherein the at least one material is configured to bond to at least one of an outer surface and an inner surface of the perforation hole upon detonation of the shaped charge and penetration of the casing by a perforation jet, and
wherein the at least one material comprises a lacquer applied to a surface of the shaped charge liner, and the lacquer comprises carbide, nitride or molybdenum.

8. The shaped charge of claim 7 , wherein the at least one material increases erosion resistance of the wellbore casing upon detonation of the shaped charge.

9. The shaped charge of claim 7 , wherein the at least one material further comprises titanium nitride.

10. The shaped charge of claim 7 , further comprising:
a case having a cavity; and
an explosive load disposed within the cavity of the case,
wherein the liner is disposed adjacent the explosive load.

11. The shaped charge of claim 7 , wherein the liner further comprises:
an apex portion; and
a skirt portion extending from the apex portion, the skirt portion comprising:
a body connected to the apex portion, and
a perimeter spaced apart from the apex portion.

12. The shaped charge of claim 11 , wherein
the at least one material comprises a carbide layer extending between and spaced apart from the perimeter and the apex.

13. The shaped charge of claim 12 , wherein the carbide layer comprises a foil adhered to a surface of the body.

14. A shaped charge liner comprising:
an apex portion; and
a skirt portion extending from the apex portion, the skirt portion comprising:
a body connected to the apex portion,
a perimeter spaced apart from the apex portion, and
a layer of material extending between and spaced apart from the perimeter and the apex portion, wherein the layer of material includes a plurality of spaced apart layers, the plurality of spaced apart layers comprising one of carbide and nitride.

15. The shaped charge liner of claim 14 , wherein the layer of material comprises a foil adhered to a surface of the body.

16. The shaped charge liner of claim 14 , wherein the plurality of spaced apart layers comprises one of tungsten carbide, titanium carbide, tantalum, and boron carbide.

17. The shaped charge liner of claim 14 , wherein
the layer of material includes a powder, and
the powder is combined with a plurality of metal powders.

18. The shaped charge liner of claim 14 , further comprising:
a plurality of metal powders compressed to form the body of the shaped charge liner,
wherein the layer of material comprises a lacquer applied to the body of the shaped charge liner.

Assignees

• DynaEnergetics Europe GmbH

Inventors

• Loehken Joern Olaf
• Mcnelis Liam
• Fricke Bernd

Classifications

• C23C24/06

  Compressing powdered coating material, e.g. by milling · CPC title

• F42B1/028 Primary

  characterised by the form of the liner · CPC title

• E21B43/117 Primary

  Shaped-charge perforators (E21B43/118 takes precedence) · CPC title

• B22F2302/10

  Carbide · CPC title

• B22F2302/20

  Nitride · CPC title