Jet Perforating Device for Creating a Wide Diameter Perforation

Patent metadata

Field	Value
Publication number	US-2016153267-A1
Application number	US-201314778513-A
Country	US
Kind code	A1
Filing date	May 30, 2013
Priority date	May 30, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

An explosive charge assembly comprises a housing, a liner disposed on a face of an explosive charge, an opening through the liner disposed at the apex, and a lip disposed around the perimeter of the opening. The liner forms an apex and a mouth opposite the apex, and the liner and the explosive charge are disposed in the housing. The explosive charge is disposed between the liner and the housing, and the lip extends from the liner in a direction towards the mouth.

First claim

What is claimed:

1 . An explosive charge assembly comprising:
a housing; a liner disposed on a face of an explosive charge, wherein the liner forms an apex and a mouth opposite the apex, wherein the liner and the explosive charge are disposed in the housing, and wherein the explosive charge is disposed between the liner and the housing; an opening through the liner disposed at the apex; and a lip disposed around the perimeter of the opening, wherein the lip extends from the liner in a direction towards the mouth.

2 . The assembly of claim 1 , wherein the lip is a part of the liner.

3 . The assembly of claim 1 , further comprising an insert disposed on the liner around the opening and adjacent to the lip.

4 . The assembly of claim 3 , wherein the insert is coupled to the liner and extends in a direction towards the mouth.

5 . The assembly of claim 3 , wherein the lip retains the insert in the housing.

6 . The assembly of claim 3 , wherein the insert extends from the lip a distance less than half the distance along the liner between the lip and the mouth.

7 . The assembly of claim 1 , wherein the lip extends away from the central axis of the assembly.

8 . The assembly of claim 1 , wherein the diameter of the opening is between about 0.1% and about 50% of the diameter of the mouth.

9 . The assembly of claim 1 , wherein the opening through the liner is disposed about the central axis of the assembly.

10 . A method of perforating comprising:
detonating an explosive charge assembly, wherein the explosive charge assembly comprises:
a liner comprising an apex,
a mouth opposite the apex,
an opening at the apex, and
an additional material coupled to the liner adjacent to the opening and
extending in a direction towards the mouth;

forming a jet in response to the detonating, wherein the additional material contributes to the formation of the jet; engaging a casing with the jet; and forming a perforation through the casing in response to the engagement with the jet.

11 . The method of claim 10 , wherein the perforation has a diameter that is greater than a diameter of a comparative perforation formed from an explosive charge assembly without the additional material.

12 . The method of claim 11 , wherein the diameter of the perforation is greater than about 5% of a comparative perforation formed from an explosive charge assembly without the additional material.

13 . The method of claim 10 , wherein the additional material comprises an insert.

14 . The method of claim 13 , wherein the perforation has a diameter that is great than a comparative perforation formed from an explosive charge assembly with a lip but without the insert.

15 . The method of claim 14 , wherein the diameter of the perforation is no less than 0.10% greater than a comparative perforation formed from an explosive charge assembly with the lip but without the insert.

16 . The method of claim 10 , wherein the additional material comprises a lip.

17 . A method for making a liner for an explosive charge assembly, the method comprising:
drawing a material into a concave shape about a central axis of an apex, wherein the apex is centered on the central axis, wherein a mouth is formed at the opposite end from the apex; forming an opening through the material at the apex about the central axis; and providing additional mass around the perimeter of the opening, wherein the additional mass is coupled to the material and extends in a direction towards the mouth.

18 . The method of claim 17 , wherein the center of the material is drawn down to form the apex while the perimeter of the material forms a skirt portion terminating in a circular skirt edge at the mouth.

19 . The method of claim 17 , wherein the drawing, the forming of the opening, and the providing of additional mass around the perimeter of the opening are each a part of the same manufacturing process.

20 . The method of claim 17 , wherein the drawing, the forming of the opening, and the providing of additional mass around the perimeter of the opening occur in a single stage.

21 . The method of claim 17 , wherein forming an opening and providing additional mass around the perimeter of the opening occur in at least two stages.

22 . The method of claim 17 , wherein the material comprises a metal.

23 . The method of claim 17 , wherein the material is selected from the group of copper, copper alloy, aluminum, aluminum alloy, tin, tin alloy, lead, lead alloy, brass and tungsten.

24 . The method of claim 23 , wherein the material comprises copper.

25 . The method of claim 17 , wherein providing additional mass around the perimeter of the opening comprises forming a lip.

26 . The method of claim 25 , wherein the lip extends away from the central axis.

27 . The method of claim 17 , wherein providing additional mass around the perimeter of the opening comprises providing an insert.

28 . The method of claim 27 , wherein the insert extends along an interior surface of the material from the perimeter of the opening a distance of less than half a distance along the material between the perimeter of the opening and the mouth.

29 . The method of claim 17 , wherein providing additional mass around the perimeter of the opening comprises forming a lip and providing an insert.

30 . The method of claim 29 , wherein the lip maintains the position of an insert disposed on the material around the opening and adjacent to the lip.

31 . The method of claim 17 , wherein the diameter of the opening is no less than 0.1% of the diameter of the mouth and no greater than 50% of the diameter of the mouth.

Assignees

• Walker Jerry L
• Metzger Jason Paul
• Craddock Jr Gerald Graves
• Halliburton Energy Services Inc

Inventors

• Walker Jerry L
• Metzger Jason Paul
• Craddock Jr Gerald Graves

Classifications

• E21B43/114 Primary

  Perforators using direct fluid action {on the wall to be perforated}, e.g. abrasive jets · CPC title

• E21B43/117 Primary

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