Selective fire perforating gun switch
AssigneeS.I.E., Inc.
InventorGene T. Boop
Life of this patent
Estimating the term…
Abstract
A multiple shot selective fire perforating gun for piercing oil field tubular goods, typically during the process of completing an oil or gas well. The perforating gun includes a multiplicity of shaped charges which are fired individually by an associated blasting cap and switch. The switch of all but the lowermost shaped charge is configured to disarm its associated blasting cap until the next lower shaped charge has detonated. The generation of the pressure pulse from detonation of the next lower shaped charge causes a piston in the switch to move to express a stream of flowable material onto a switch actuator which manipulates the switch to place it in an armed condition ready to fire.
Claims19
A switch comprising:
- a plurality of contacts, means mounting the contacts for relative movement, and a member effecting relative movement of the contacts upon application of an impact force thereto;
- and
- means for applying a contact moving impact force to the member including a receptacle having therein a body of flowable material spaced from the member and means for generating an unconfined stream of material from the receptacle and for directing the same against the member including means for applying pressure to the material.
A switch unit comprising:
- a switch having a plurality of stationary contacts and a member mounted for movement in a switching path carrying a plurality of contacts;
- and
- a switch body mounting the switch and including means for applying an impact force to the member, comprising a receptacle having therein a body of flowable material spaced from the member, means for generating an unconfined stream of the flowable material from the receptacle and for directing the same against the movable member including means for applying pressure to the material in response to a force applied to the switch body.
Dependencies are inferred from the claim text.