US 12,612,833 B2Granted

Direct-to-gun setting tool

AssigneeDBK Industries, LLC

InventorsJeremy Todd Morrison, Nicholas Clayton Fearka

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Abstract

In the context of downhole tools, fixed volume power charge initiator assemblies and bottom hole assemblies utilizing fixed volume power charge initiator assembly are disclosed. The fixed volume power charge initiator assembly has a pressure bulkhead coupled to a cartridge. The cartridge includes an igniter disposed within an interior cavity of the cartridge. When used in a bottom hole assembly the fixed volume power charge initiator assembly is located in a setting tool adjacent to a power charge located within a combustion chamber of the setting tool. The combustion chamber and the cartridge together define a fixed total combustion volume. In some instances, the fixed volume power charge initiator assembly includes a power charge detector switch. Other assemblies are discussed.

Claims17

Dependent claims

A gas-operated fixed-volume setting tool for use in oil wells comprising:

a mandrel having a first end and a second end;
a barrel piston having a first end and a second end, and wherein the barrel piston extends over at least a portion of the mandrel when in an in-line configuration and is releasably coupled to the mandrel when in the in-line configuration;
wherein the mandrel includes an interior combustion chamber having a first end proximate to the first end of the mandrel and a second end proximate to the second end of the mandrel;
a pressure block disposed in the mandrel at the first end of the mandrel;
a pressure bulkhead coupled to the pressure block and forming a seal therewith;
and
a cartridge coupled to the pressure bulkhead;
an igniter having a first end and a second end;
wherein the pressure block, the pressure bulkhead, and the cartridge form a seal to the combustion chamber to at least a first threshold pressure on the first end of the combustion chamber and thereby define a fixed combustion chamber volume;
and
wherein the cartridge comprises:
a housing body having a first end and a second end,
a cartridge mating portion formed on the first end of the housing body that mates with the pressure bulkhead, and
an interior cavity formed within the housing body;
and
wherein, the igniter is at least partially disposed within the interior cavity of the cartridge.

13 more elements

A fixed volume power charge initiator assembly for use as an aspect of a gas-power setting tool, the fixed volume power charge initiator comprising:

a pressure bulkhead having a first end and a second end;
a cartridge having a first end and a second end;
wherein the cartridge comprises:
a housing body having a first end and a second end, and
an interior cavity formed within the housing body;
wherein the pressure bulkhead is coupled to first end of the cartridge and the pressure bulkhead is at least partially disposed within the interior cavity of the housing;
an igniter, having a first end and a second end;
wherein the igniter is coupled to the cartridge and at least partially disposed within the interior cavity of the cartridge;
a pressure block having a bore;
wherein an interior wall of the bore is sized and configured to mate with an exterior wall of the cartridge;
wherein the first end of the cartridge is disposed within the bore of the pressure block;
a power charge detector switch at least partially disposed within the interior cavity of the cartridge;
wherein, when the power charge detector switch is in an inactivated state, the components of the power charge detector switch do not make a grounded connection for an igniter electrical circuit or an addressable switch electrical circuit;
and
wherein, when the power charge detector switch is in an activated state, at least one component of the power charge detector switch makes a grounded connection for the igniter electrical circuit or the addressable switch electrical circuit by contacting a grounded component.

12 more elements

Dependencies are inferred from the claim text.