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US 2021/0017841 A1Published application
Pressure Activated Selective Perforating Switch Support
AssigneeHunting Titan, Inc.
InventorJoel Sansing
Life of this patent
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Abstract
A method, system, and apparatus for restraining a firing pin using a bushing for use in a downhole switch that is armed using the explosive energy of a previously detonated shaped charge.
Claims9
A switch for use downhole comprising:
- a cylindrical housing with a common axis, a first face, a second face, and a through bore;
- a cylindrical firing piston protruding from the first face and having a distal end with a circumferential groove, wherein the cylindrical firing piston is slideably engaged with the cylindrical housing;
- a support bushing having a cylindrical sleeve with a distal end, a cylindrical base, and a thru bore, wherein the cylindrical sleeve is slideably engaged with firing piston;
- a cylindrical end cap retainer having a frusto-conical thru bore with an inner shoulder, a countersink end, wherein the inner shoulder is slideably engaged with the cylindrical sleeve of the support bushing and the countersink end fits flush over the support bushing cylindrical sleeve and also fits flush against the second face of the cylindrical housing;
- wherein the shoulder of the base end of the support bushing is between the cylindrical end cap retainer and the second face of the cylindrical housing.
2 more elements
Dependencies are inferred from the claim text.