Snap-on Liner Retention Device

Patent metadata

Field	Value
Publication number	US-2021131770-A1
Application number	US-202017118604-A
Country	US
Kind code	A1
Filing date	Dec 11, 2020
Priority date	Apr 2, 2015
Publication date	May 6, 2021
Grant date	—

Abstract

A shaped charge retainer ring for use in containing the liner of a shaped charge and the explosive material.

First claim

1 . A shaped charge apparatus comprising:
a shaped charge case with an axis, an inner surface, an outer surface, and a top surface; and at least one circumferential retaining means for retaining a ring on the outer surface; a liner with an inner surface and an outer surface; an explosive material located between the outer surface of the liner and the inner surface of the shaped charge case; a L-shaped inner retainer ring attached to the top surface of the shaped charge case and with an inner radial surface, an outer radial surface, a lower axial surface, and an upper axial surface, wherein the lower axial surface is adjacent to the top surface of the shaped charge case and the outer radial surface is adjacent to the inner surface of the shaped charge case; and a L-shaped outer retainer ring engaging with the shaped charge case and having an upper axial surface a lower axial surface, an inner radial surface, and an outer radial surface, wherein the inner radial surface includes at least one other retaining means that is interfaced with the shaped charge case outer surface circumferential retaining means, wherein the inner retaining ring and the outer retainer ring are separate rings or are integrally formed into a single retainer; and wherein the liner is restrained axially by the inner retainer ring and the outer retainer ring.

2 . The apparatus of claim 1 , wherein the at least one retaining means on the outside surface of the shaped charge case is a circumferential groove.

3 . The apparatus of claim 2 , wherein the at least one retaining means is a plurality of circumferential grooves.

4 . The apparatus of claim 1 , wherein the retaining means is a thread.

5 . The apparatus of claim 4 , wherein the thread is a buttress thread.

6 . The apparatus of claim 1 , wherein the retaining means is a plurality of ridges.

7 . The apparatus of claim 1 , wherein retaining means is a plurality of detents.

8 . The apparatus of claim 1 , wherein retaining means is a lip.

Assignees

• Hunting Titan Inc

Inventors

• Montoya Ashton Laura
• Collins William R
• Levine Charles
• Mcdonald Debra Christine
• Mcgregor Aaron Lee
• Schulte Bradley Dean
• Wilson Shane Matthew

Classifications

• E21B43/119

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

• F42B1/028 Primary

  characterised by the form of the liner · CPC title

• F42B3/08

  with cavities in the charge, e.g. hollow-charge blasting cartridges · CPC title