Ballistic transfer module

Patent metadata

Field	Value
Publication number	US-2016202033-A1
Application number	US-201414911351-A
Country	US
Kind code	A1
Filing date	Jul 22, 2014
Priority date	Aug 26, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

According to an aspect a deformable member is provided, wherein the deformable member is configured for use in a ballistic transfer module. The ballistic transfer module includes the deformable member, a booster holder, a booster and a detonating cord. A method of initiating one or more percussion initiators of a perforating gun assembly using the ballistic transfer module and deforming the deformable member is also provided.

First claim

1 . A ballistic transfer module, comprising:
a deformable member comprising a body; a booster holder comprising a housing member and a head extending from one end of the housing member; a booster positioned within a bore of the housing member of the booster holder; and a detonating cord extending from the booster, wherein the deformable member is configured for assembly in contact with at least a portion of the head of the booster holder.

2 . The ballistic transfer module of claim 1 , further comprising:
a gap positioned within the body of the deformable member.

3 . The ballistic transfer module of claim 2 , wherein the body of the deformable member comprises a gap cover the gap cover provided to form a wall of the gap.

4 . The ballistic transfer module of claim 3 , wherein the gap cover is formed as an integrated component with the body.

5 . The ballistic transfer module of claim 3 , wherein the gap cover is made from a different material than the body of the deformable member.

6 . The ballistic transfer module of claim 2 , wherein the gap is centrally positioned in the body of the deformable member at a depth of about 0.4 mm to about 0.6 mm below an inner surface of the deformable member, the gap is bound by walls forming a cylindrically-shaped opening, the gap having a depth of about 0.4 mm to about 0.6 mm, and a radius of about 3 mm to about 7 mm.

7 . The ballistic transfer module of claim 1 , wherein the deformable member comprises an inner surface and an outer surface, and wherein the outer surface of the deformable member is configured for abutment with a percussion initiator and the inner surface of the deformable member is configured for abutment with the booster.

8 . The ballistic transfer module of claim 7 , further comprising:
a collar extending from the body of the deformable member; and a retaining member extending from the collar; and a positioning member extending from the head of the booster, wherein the retaining member is configured for holding the positioning member of the booster holder in at least a semi-fixed position.

9 . The ballistic transfer module of claim 8 , wherein the retaining member comprises an annular lip complementarily sized and shaped for receiving the positioning member of the booster holder such that the booster abuts the deformable member.

10 . The ballistic transfer module of claim 1 , wherein the deformable member deforms to initiate the percussion initiator.

11 . A method of initiating one or more percussion iniators of a perforating gun assembly, comprising:
assembling a ballistic transfer module as at least one portion of the perforating gun assembly, the ballistic transfer module comprising: a deformable member comprising a body; a booster holder comprising a housing member and a head extending from one end of the housing member; a booster positioned within a bore of the housing member of the booster holder; and a detonating cord extending from the booster, wherein the deformable member is configured for assembly in contact with at least a portion of the head of the booster holder; initiating the detonating cord, which in turn activates the booster causing the booster to explode; deforming the deformable member through the explosion of the booster; and igniting a percussion initiator through the deforming of the deformable member to fire the perforating gun assembly.

12 . The method of claim 11 , wherein the igniting of the percussion initiator through the deforming of the deformable member fires a time delay which in turn fires the perforating gun assembly.

13 . The method of claim 11 , further comprising:
forming a gap cover in the body of the deformable member, the gap cover forming a wall of a gap positioned within the body of the deformable member.

14 . The method of claim 13 , further comprising configuring the gap cover as a removable portion and positioning the gap cover in abutting contact with the booster such that when the booster explodes, the gap cover deforms into the gap, causing deforming of the deformable member.

15 . The method of 11 , comprising:
forming a gap cover as an integrated component of the body of the deformable member, the gap cover forming a wall of a gap positioned within the body of the deformable member; and positioning the gap cover in abutting contact with the booster such that when the booster explodes, the gap cover deforming into the gap, causing deforming of the deformable member.

16 . The method of claim 15 , comprising:
forming the gap cover of a material that is different than a material forming the body of the deformable member.

17 . The method of claim 11 , comprising:
configuring the deformable member with a collar extending from the body and a retaining member extending from the collar; configuring the head of the booster holder with a positioning member extending from the head; and; holding the positioning member extending from the head of the booster holder using the retaining member configured as an annular lip complementarily sized and shaped for holding the positioning member in at least a semi-fixed position such that the booster abuts the deformable member.

18 . A deformable member, comprising:
a body; a collar extending from the body; a retaining member extending from the collar; and a gap cover, wherein the body surrounds a centralized gap.

19 . The deformable member of claim 18 , wherein the gap cover is configured to form a wall of the gap on one end and an inner surface of the body on the other end.

20 . The deformable member of claim 18 , wherein the deformable member is configured for abutment with a percussion initiator and the deformable member deforms to initiate a percussion initiator.

Assignees

• Dynaenergetics Gmbh & Co Kg

Inventors

• Shahinpour Arash
• Müller Jörg
• Mulhern Eric
• Preiss Frank Haron

Classifications

• F42D1/043 Primary

  Connectors for detonating cords and ignition tubes, e.g. Nonel tubes (mounting of detonators in blasting cartridges F42B3/26) · CPC title

• E21B43/1185 Primary

  Ignition systems · CPC title

• F42C19/08

  Primers (initiators for blasting cartridges F42B3/10; ignition means for rocket engine plants F02K9/95); Detonators · CPC title

• F42B3/10

  Initiators therefor (percussion fuzes F42C7/00; percussion caps F42C19/10; electric primers F42C19/12) · CPC title

• E21B43/119

  Details, e.g. for locating perforating place or direction · CPC title